A design method for an integrated afterburner support plate based on non-uniform air intake

Abstract

This invention discloses a design method for an integrated afterburner support plate based on non-uniform air intake, belonging to the technical field of gas turbine afterburners. By adjusting design parameters and modifying the fitted design profile, the design of the straightening support plate profile facing non-uniform airflow can be realized, increasing the design flexibility of the straightening support plate profile. By adjusting design parameters, the flow loss of the straightening support plate can be controlled, and certain airflow deflection requirements can be met, enhancing the guiding effect. The design method of the straightening support plate profile can be applied to the optimization design of existing straightening support plate configurations, reducing design difficulty, improving design specificity, and better meeting the practical application needs of the straightening support plate.

Description

Technical Field

[0001] This invention belongs to the field of gas turbine afterburner technology, specifically a design method for an integrated afterburner support plate based on non-uniform air intake. Background Art

[0002] The new generation of afterburners integrates the traditional turbine component's flow-rectifying support device into the afterburner itself, thus shifting the inlet section of the integrated afterburner to the turbine blade outlet section. The wake effect generated by turbine blade rotation, the unsteady state of turbine operation, the cooling effect of the cooling gas on the turbine wall, and the discontinuous fuel injection from the main combustion chamber result in uneven turbine exit velocity and coswirl angle distributions. This makes the intake conditions of the afterburner more severe, leading to non-uniformity in the inlet velocity and coswirl angle of the integrated afterburner, which is one of the important factors affecting the stable operation of the afterburner.

[0003] Currently, most integrated afterburner designs in China are oriented towards uniform flow, with few design methods for non-uniform flow. Non-uniform flow conditions, such as non-uniform velocity and non-uniform cosmog angle, significantly affect the flow field and combustion characteristics of the rectifier. Under non-uniform flow conditions, existing rectifiers struggle to achieve the performance targets of afterburners and cannot meet the design and testing requirements of future next-generation afterburners. Summary of the Invention

[0004] This invention addresses the problems existing in the prior art by disclosing a design method for an integrated afterburner support plate based on non-uniform air intake, thereby improving the design flexibility of the rectifier support plate and enhancing the operational performance of the integrated afterburner rectifier support plate structure and the overall structure.

[0005] This invention is implemented as follows:

[0006] A design method for an integrated afterburner support plate based on non-uniform air intake, comprising:

[0007] Step 1: Define N1 intermediate arc surfaces P that are sequentially spaced along the radial direction based on the inner and outer diameters of the integrated afterburner annulus. i , i = 1, 2...N1.

[0008] Step 2: For each of the aforementioned arc surfaces P, determine the bending angle θ of the rectifier support plate outer surface at the arc surface based on the cosine angle of the non-uniform airflow; determine the length L of the rectifier support plate outer surface at the arc surface based on the airflow velocity of the non-uniform airflow.

[0009] Step 3: Construct the arc lines in the rectifier support plate according to the bending angle θ and length L at each arc surface P.

[0010] Step 4: For each of the aforementioned mid-arc lines, the distribution of the rectifier support plate thickness along the mid-arc line is given to form the outer profile of the rectifier support plate.

[0011] Step 5: Fit the outer profile of each rectifier branch to form the outer profile surface of the rectifier branch.

[0012] Step 6: Establish a rectifier support plate model based on the current design rectifier support plate outline, and establish an integrated afterburner model based on the rectifier support plate model.

[0013] Step 7: Analyze the hydrodynamic characteristics of the integrated afterburner model under non-uniform flow conditions and obtain the current analysis results.

[0014] Step 8: Determine whether the current analysis result meets the preset conditions. If yes, the current design rectifier support plate outer surface is the final rectifier support plate outer surface. If not, return to step 2.

[0015] As an optional design scheme for the rectifier support plate outer surface design method, the blocks are divided according to the non-uniform airflow velocity and cosine angle contour lines. Given the radial position r of each vertex of the block, the intermediate arc surface P is obtained according to the radial position in step 1.

[0016] Alternatively, let the outer diameter of the end of the rectifier support plate be r0 and the inner diameter be r1, and the radial spacing of the intermediate arc surfaces P be consistent. In step 1, the intermediate arc surfaces P and their radial positions r are determined according to N1 = 5 to 10.

[0017] As an optional design scheme for the rectifier support plate's outer profile design, let α be the average cosine angle of the non-uniform air intake at the intermediate arc surface P. In step 2, the bending angle θ of the rectifier support plate's outer profile is determined according to 0°≤θ-α≤5°. Let the non-uniform air intake at the intermediate arc surface P... max The airflow velocity is at its maximum at location r, corresponding to a radial position r. max Given that the average length of the rectifier support plate's outer surface is L1, in step 2, according to L=-|rr max |-r max +0.5r0+0.5r1+L1 determines the length L of the outer surface of the rectifier branch plate.

[0018] The connection surface between the outer surface of the support plate and the outer surface of the stabilizer is defined as the support plate-stabilizer connection surface. The midpoint of the intersection line between the support plate-stabilizer connection surface and the intermediate arc surface P is defined as the end point S2 of the intermediate arc line. An intermediate reference point S3 is defined. Line segments S2 and S3 are parallel to the axial direction and have a length of L. The leading edge point S1 of the intermediate arc line is defined, determined by L2 = 0.5L tanθ. The length of line segment S1S3 is L2. Line segments S1S3 are perpendicular to line segments S2 and S3, and perpendicular to the radial direction. A quadratic curve is drawn through the leading edge point S1 and the end point S2 of the intermediate arc line. In step 3, the intermediate arc line is determined based on the bending angle θ and the length L.

[0019] As an optional design scheme for the rectifier support plate outer surface design method, the intermediate reference point S4 of the middle arc line is defined, the intermediate reference point S5 of the blade basin line in the outer surface line is defined, and the intermediate reference point S6 of the blade back line in the outer surface line is defined. The line segments S5 and S6 are perpendicular to the middle arc line. The intermediate reference point S4 of the middle arc line is the midpoint of the line segments S5 and S6. A first spline curve is drawn through the intermediate reference point S5 of each blade basin line, and a second spline curve is drawn through the intermediate reference point S6 of each blade back line. In step 4, the combination of the first spline curve and the second spline curve is the outer surface line of the rectifier support plate at the arc surface P position.

[0020] As an optional design scheme for the design method of the rectifier support plate outer surface, the fluid dynamic characteristics of the integrated afterburner model under non-uniform flow are analyzed using fluid simulation software.

[0021] The advantages of this invention compared to the prior art are as follows:

[0022] The design method for the rectifier support plate outer profile provided by this invention analyzes the non-uniform air intake characteristics and sets an intermediate arc surface corresponding to the air intake characteristic position. By adjusting the design parameters, the fitted design outer profile can be adjusted, thereby realizing the design of the rectifier support plate outer profile facing the non-uniform incoming flow and increasing the design flexibility of the rectifier support plate outer profile. By adjusting the design parameters of the arc line in any rectifier support plate, or by adjusting the thickness distribution of any rectifier support plate outer profile, the rectifier support plate design outer profile formed by the fitted curve can be adjusted. This can control the flow loss of the rectifier support plate and meet certain air intake deflection requirements, enhancing the guiding effect. Furthermore, by determining each design parameter, the design method for the rectifier support plate outer profile can be applied to the optimization design of existing rectifier support plate configurations, reducing design difficulty, improving design pertinence, and better meeting the practical application needs of the rectifier support plate. Attached Figure Description

[0023] Figure 1 This is a front view of the integrated afterburner support plate stabilizer structure;

[0024] Figure 2 This is a top view of the integrated afterburner support plate stabilizer structure;

[0025] Figure 3 This is a schematic diagram of the middle curved surface design;

[0026] Figure 4 This is a schematic diagram of the mid-arc design;

[0027] Figure 5 This is a schematic diagram of the support plate's outer profile design;

[0028] Figure 6 This is a schematic diagram of an integrated afterburner structure;

[0029] Figure 7 This is a schematic diagram of the airflow direction in and out of the integrated afterburner.

[0030] Wherein, 11-support plate outer surface, 12-stabilizer outer surface, 13-support plate stabilizer connection surface, 14-afterburner outer annular surface, 15-afterburner inner annular surface, 111-blade back surface of support plate outer surface, 112-blade basin surface of support plate outer surface, L-support plate outer surface length, L1-mid-arc reference length, P 1～7 - Curved surface, r0 - Maximum radius of the outer annular surface of the afterburner, r1 - Minimum radius of the inner annular surface of the afterburner, S1 - Leading edge point of the middle arc, S2 - Trailing edge point of the middle arc, S3 - Reference point of the middle arc, S 4-1～11 - Control point of the middle arc, S 5-1～11 - The profile control point on the back of the support blade, S 6-1～11 - The profile control point of the support plate blade basin surface, θ - the bending angle of the support plate outer profile surface. Detailed Implementation

[0031] To make the objectives, technical solutions, and effects of this invention clearer, the following examples provide a more detailed description of the invention. It should be noted that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0032] This example provides a design method for an integrated afterburner support plate based on non-uniform air intake. By analyzing the characteristics of non-uniform air intake, some design parameters are determined to achieve a flow straightener design oriented towards non-uniform air intake. By adjusting the position of the design mid-surface and various design parameters, different combinations of outlines are fitted to form a flow straightener model and an integrated afterburner model based on the fitted outlines. The performance of the integrated afterburner corresponding to the flow straightener model is analyzed to obtain an optimized design scheme and achieve optimization of the fluid performance of the flow straightener and the integrated afterburner under non-uniform airflow.

[0033] like Figure 1The diagram shows an integrated "support plate-stabilizer" structure, including a support plate outer surface 11 and a stabilizer outer surface 12, where the support plate outer surface 11 is the structure to be designed. Figure 2 As shown, the outer surface of the support plate to be designed is a curved strip structure. The back surface 111 of the support plate blade refers to the convex side of the surface, and the basin surface 112 of the support plate blade refers to the concave side of the surface. The connection 13 between the outer surface 11 of the support plate and the outer surface 12 of the stabilizer is designed with equal thickness, and the thickness is the same everywhere at this point.

[0034] Specifically, the blade design method provided in this embodiment includes the following steps:

[0035] Step 1: Define N1 intermediate arc surfaces P that are sequentially spaced along the radial direction based on the inner and outer diameters of the integrated afterburner annulus. i , i = 1, 2...N1.

[0036] In the specific design process, the blocks are divided according to the non-uniform airflow velocity and cosine angle contour lines. Given the radial position r of each vertex of the block, the intermediate arc surface P is obtained according to the radial position in step 1.

[0037] Alternatively, let the outer diameter of the end of the rectifier support plate be r0 and the inner diameter be r1, and the radial spacing of the intermediate arc surfaces P be consistent. In step 1, the intermediate arc surfaces P and their radial positions r are determined according to N1 = 5 to 10.

[0038] like Figure 3 As shown, in this embodiment, the radial position r is determined based on r1≤r≤r0 and N1=7, and the radial spacing of the initially determined intermediate arc surfaces P is consistent. Furthermore, in this embodiment, the maximum airflow velocity of the non-uniform intake is located at arc surface P4. To improve design specificity, the distribution of arc surfaces P3~P5 is adjusted to be denser and the spacing smaller.

[0039] It is worth noting that the outer diameter r0 and inner diameter r1 of the integrated afterburner are designed according to specific requirements, and this invention does not impose any restrictions on them.

[0040] Step 2: For each of the aforementioned arc surfaces P, determine the bending angle θ of the rectifier support plate outer surface at the arc surface based on the cosine angle of the non-uniform airflow; determine the length L of the rectifier support plate outer surface at the arc surface based on the airflow velocity of the non-uniform airflow.

[0041] As an optional design scheme for the rectifier support plate's outer profile design, let α be the average cosine angle of the non-uniform air intake at the intermediate arc surface P. In step 2, the bending angle θ of the rectifier support plate's outer profile is determined according to 0°≤θ-α≤5°. Let the non-uniform air intake at the intermediate arc surface P... max The airflow velocity is at its maximum at location r, corresponding to a radial position r. maxGiven that the average length of the rectifier support plate outer surface is L1, in step 2, the length L of the rectifier support plate outer surface is determined based on the average length L1 and the radial position r.

[0042] In this embodiment, the maximum airflow velocity of the non-uniform intake is located at the arc surface P4, that is, the maximum length of the two-dimensional surface of the rectifier support plate is L4. According to L=-|rr max |-r max +0.5r0+0.5r1+L1 determines the length L of the outer surface of the rectifier support plate; in order to achieve a smooth transition of the support plate length change curve, the length L4 at the arc surface P4 is appropriately reduced.

[0043] Step 3: Construct the arc lines in the rectifier support plate according to the bending angle θ and length L at each arc surface P.

[0044] The connection surface between the support plate outer surface 11 and the stabilizer outer surface 12 is defined as the support plate stabilizer connection surface 13. The midpoint of the intersection line between the support plate stabilizer connection surface 13 and the intermediate arc surface P is defined as the end point S2 of the intermediate arc line. An intermediate reference point S3 is defined. Line segments S2 and S3 are parallel to the axial direction and have a length of L. The leading edge point S1 of the intermediate arc line is defined, determined by L2 = 0.5L tanθ. The length of line segment S1S3 is L2; ​​line segments S1S3 are perpendicular to line segments S2 and S3, and perpendicular to the radial direction. A quadratic curve is drawn through the leading edge point S1 and the end point S2 of the intermediate arc line. In step 3, the intermediate arc line is determined based on the bending angle θ and the length L.

[0045] like Figure 4 As shown, in this embodiment, the intersection line is determined based on the connecting surface 13 of the support plate stabilizer and the arc surface P, and the end point S2 of the middle arc line is further determined; the intermediate reference point S3 is determined based on the end point S2 of the middle arc line and the length L of the support plate, and the leading edge point S1 of the middle arc line is further determined; the middle arc line is determined based on the leading edge point S1, the end point S2 and the bending angle θ of the middle arc line.

[0046] Step 4: For each of the aforementioned mid-arc lines, the distribution of the rectifier support plate thickness along the mid-arc line is given to form the outer profile of the rectifier support plate.

[0047] As an optional design scheme for the rectifier support plate outer surface design method, the intermediate reference point S4 of the middle arc line is defined, the intermediate reference point S5 of the blade basin line in the outer surface line is defined, and the intermediate reference point S6 of the blade back line in the outer surface line is defined. The line segments S5 and S6 are perpendicular to the middle arc line, and the intermediate reference point S4 of the middle arc line is the midpoint of the line segments S5 and S6. The first spline curve 113 is drawn through the intermediate reference point S5 of each blade basin line, and the second spline curve 114 is drawn through the intermediate reference point S6 of each blade back line. In step 4, the combination of the first spline curve 113 and the second spline curve 114 is the outer surface line of the rectifier support plate outer surface 11 at the arc surface P position.

[0048] like Figure 5 As shown, in this embodiment, intermediate reference points S4 are set on the middle arc line. Taking the number of reference points N2 = 14 as an example, intermediate reference points S4 are set at intervals from the leading edge point S1 to the ending point S2 of the middle arc line, with the interval of reference points S4 increasing along the arc. Furthermore, the lengths of line segments S5 and S6 extending along the normal direction from reference points S4 also increase along the arc. Based on reference points S... 5-1 ~S 5-14 Draw the first line curve 113, based on the reference point S. 6-1 ~S 6-14 Draw the second spline curve 114. The combination of the first spline curve 113 and the second spline curve 114 is the outer shape line of the rectifier support plate 11 at the arc surface P.

[0049] It is worth noting that the lengths of line segments S5 and S6 can be designed according to specific requirements or refer to existing technologies; this invention does not impose specific restrictions on the number of reference points S4, which can be designed according to specific requirements; appropriately increasing the number of reference points can improve the smoothness of the surface, but to ensure design efficiency, the number of reference points should not be set too much.

[0050] Step 5: Fit the outer profile of each rectifier branch to form the outer profile surface of the rectifier branch.

[0051] like Figure 6 As shown, in this embodiment, based on the arc surfaces P1 to P7 determined in step 1, steps 2 to 4 are repeated to design the rectifier support plate outline. A smooth surface is drawn using the first spline curve 113 at the arc surface P of the rectifier support plate, determining the blade back surface 111 of the rectifier support plate outline; a smooth surface is drawn using the second spline curve 114 at the arc surface P of the rectifier support plate, determining the blade basin surface 112 of the rectifier support plate outline; the blade back surface 111 and the blade basin surface 112 of the support plate outline are combined to form the complete outline of the rectifier support plate.

[0052] The above steps 1 to 5 can be adjusted by selecting intermediate parameters to modify the two-dimensional and three-dimensional shapes of the fitted design, thereby increasing design flexibility.

[0053] It is worth noting that the intake parameters are introduced as intermediate design parameters in steps 1 to 3 above. That is, the support plate design provided in this embodiment can be well applied to the targeted design of support plate profiles under complex and non-uniform intake conditions, obtain support plate profiles with good fluid performance, and better meet the actual needs of integrated afterburner.

[0054] To further optimize the support plate design method and improve the fluid performance of the support plate, in this embodiment, the support plate design method also includes the following steps.

[0055] Step 6: Establish a rectifier support plate model based on the current design rectifier support plate outline, and establish an integrated afterburner model based on the rectifier support plate model.

[0056] Figure 6 This is the integrated afterburner model established in this embodiment. Based on the currently designed support plate surface 11, it connects the stabilizer 12, the outer annular surface 14 of the afterburner, and the inner annular surface 15 of the afterburner. Multiple integrated "support plate-stabilizer" structures are arranged circumferentially to form a complete integrated afterburner model. The method for establishing the integrated afterburner model can refer to the existing technology and will not be described in detail here.

[0057] The method for establishing the integrated afterburner model can refer to existing technologies, which is not the focus of this invention and will not be elaborated further.

[0058] Step 7: Analyze the hydrodynamic characteristics of the integrated afterburner model under non-uniform flow conditions and obtain the current analysis results.

[0059] After the integrated afterburner model is established, it is necessary to analyze the hydrodynamic characteristics of the afterburner model in order to determine whether the characteristics of the afterburner model based on the current design support plate are optimized relative to the existing technology.

[0060] In this embodiment, fluid simulation software is used to analyze the hydrodynamic characteristics of the afterburner model under non-uniform flow conditions. Fluid simulation parameters are set based on the non-uniform flow characteristics designed for the afterburner, so that the simulation environment closely matches the actual operating environment of the afterburner. For example... Figure 7 The diagram shows the direction of airflow in and out of the integrated afterburner in the simulation software. The airflow flows in between the outer annular surface 14 and the inner annular surface 15 of the afterburner and flows out from the outlet of the afterburner.

[0061] Using fluid simulation software to analyze the fluid dynamics characteristics of an afterburner model is a standard practice in this field. This embodiment will not elaborate on or limit how to specifically implement the fluid dynamics analysis.

[0062] Step 8: Determine whether the current analysis result meets the preset conditions. If yes, the current design rectifier support plate outer surface is the final rectifier support plate outer surface. If not, return to step 2.

[0063] After simulating the afterburner model established on the current design support plate profile, the simulation results are extracted and analyzed. The simulation results mainly include the velocity distribution, cosine angle distribution, and flow loss at the connection between the support plate and the stabilizer.

[0064] The preset conditions can be specifically set according to the final performance parameters to be optimized. In this embodiment, the purpose of the optimization design is to reduce the airflow separation at the flow channel between the support plates and reduce the flow loss of the support plate structure. The preset conditions can be set to be satisfied when there is no obvious flow separation at the flow channel between the support plates or when the flow loss of the support plate structure is significantly reduced.

[0065] If the current simulation results meet the preset conditions, the design process is stopped and the current support plate profile is taken as the final support plate profile; otherwise, return to step 2 and reselect the intermediate design parameters.

[0066] Therefore, the present invention proposes an integrated afterburner support plate design method based on non-uniform air intake. According to the non-uniform air intake conditions of the actual operation of the integrated afterburner, some design parameters are determined by analyzing the non-uniform air intake characteristics, and an optimized design scheme for the rectifier support plate is obtained, thereby improving the fluid performance of the rectifier support plate and the integrated afterburner under non-uniform airflow.

[0067] The preferred embodiments of the present invention described above in conjunction with the accompanying drawings are only for illustrating the implementation of the present invention, and are not intended to limit the foregoing objectives and the scope of the appended claims. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention and its protection.

Claims

1. A design method for an integrated afterburner support plate based on non-uniform air intake, characterized in that, include: Step 1: Define N1 intermediate arc surfaces P that are sequentially spaced along the radial direction based on the inner and outer diameters of the integrated afterburner annulus. i , i = 1, 2...N1; Step 2: For each of the aforementioned arc surfaces P, determine the bending angle θ of the rectifier support plate outer surface at the arc surface based on the cosine angle of the non-uniform airflow; determine the length L of the rectifier support plate outer surface at the arc surface based on the airflow velocity of the non-uniform airflow. Step 3: Construct the arc lines in the profile based on the bending angle θ and length L of the outer surface of the rectifier support plate at each arc surface P; Step 4: For each of the aforementioned mid-arc lines, the distribution of the rectifier support plate thickness along the mid-arc line is given to form the outer profile of the rectifier support plate; Step 5: Fit and form the rectifier branch surface for each of the aforementioned rectifier branch profile lines; Step 6: Establish a model of the rectifier support plate based on its outer surface, and establish an integrated afterburner model based on the rectifier support plate model. Step 7: Analyze the hydrodynamic characteristics of the integrated afterburner model under non-uniform flow conditions and obtain the current analysis results; Step 8: Determine whether the current analysis result meets the preset conditions. If yes, the current design rectifier support plate outer surface is the final rectifier support plate outer surface. If no, return to step 2. The specific method for determining the position of the intermediate arc surface is as follows: The blocks are divided according to the contour distribution of the non-uniform airflow velocity and cosine angle. Given the radial position r of each vertex of the block, the intermediate arc surface P is obtained according to the radial position in step 1. Alternatively, let the outer diameter of the end of the rectifier support plate be r0 and the inner diameter be r1, and the radial spacing of the intermediate arc surfaces P be consistent. In step 1, the intermediate arc surfaces P and their radial positions r are determined according to N1 = 5 to 10.

2. The integrated afterburner support plate design method based on non-uniform air intake as described in claim 1, characterized in that, The specific method for determining the bending angle θ and length L of the outer surface of the rectifier support plate is as follows: Let the average cosine angle of the non-uniform air intake at position P on the intermediate arc surface be α. In step 2, the bending angle θ of the outer surface of the rectifier support plate is determined according to 0°≤θ-α≤5°. Assume non-uniform air intake occurs at the intermediate arc surface P max The airflow velocity is at its maximum at location r, corresponding to a radial position r. max Given that the average length of the rectifier support plate's outer surface is L1, in step 2, according to L=-|rr max |-r max +0.5r0+0.5r1+L1 determines the length L of the outer surface of the rectifier branch plate.

3. The integrated afterburner support plate design method based on non-uniform air intake as described in claim 1, characterized in that, The specific method for determining the mid-arc line of the rectifier support plate's outer surface is as follows: The connection surface between the outer surface of the support plate (11) and the outer surface of the stabilizer (12) is given as the connection surface of the support plate stabilizer (13), and the midpoint of the intersection line between the connection surface of the support plate stabilizer (13) and the middle arc surface P is defined as the end point S2 of the middle arc line. Define an intermediate reference point S3. Line segment S2S3 is parallel to the axis and has a length of L. The leading edge point S1 of the middle arc is determined according to L2 = 0.5Ltanθ. The length of S1S3 is L2. Line segment S1S3 is perpendicular to line segment S2S3 and perpendicular to the radial direction. A quadratic curve is drawn through the leading edge point S1 and the ending point S2 of the middle arc. In step 3, the middle arc is determined according to the bending angle θ and the length L.

4. The integrated afterburner support plate design method based on non-uniform air intake as described in claim 1, characterized in that, The specific method for determining the outer profile of the rectifier branch plate is as follows: Define the middle reference point S4 of the middle arc line, the middle reference point S5 of the blade basin line in the outer profile line, and the middle reference point S6 of the blade back line in the outer profile line. The line segments S5 and S6 are perpendicular to the middle arc line. The middle reference point S4 of the middle arc line is the midpoint of the line segments S5 and S6. Draw the first spline curve (113) through the middle reference point S5 of each blade basin line and draw the second spline curve (114) through the middle reference point S6 of each blade back line. In step 4, the combination of the first spline curve (113) and the second spline curve (114) is the outer profile line of the rectifier support plate (11) at the arc surface P position.

5. The integrated afterburner support plate design method based on non-uniform air intake as described in claim 1, characterized in that, In step 5, the specific method for determining the outer profile of the rectifier support plate is as follows: A smooth surface is drawn by the first spline curve (113) at the arc surface P of the rectifier support plate, and the blade back surface (111) of the rectifier support plate is determined; a smooth surface is drawn by the second spline curve (114) at the arc surface P of the rectifier support plate, and the blade basin surface (112) of the rectifier support plate is determined; the blade back surface (111) of the support plate and the blade basin surface (112) of the support plate are combined to form the complete rectifier support plate.

6. The integrated afterburner support plate design method based on non-uniform air intake according to claim 1, characterized in that, In step 7, fluid simulation software is used to analyze the hydrodynamic characteristics of the integrated afterburner model under non-uniform flow conditions.

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