Explosive wave simulation shock tube rotary type sparse wave eliminating device and adjusting method thereof

Abstract

The invention relates to an explosive wave simulation shock tube auxiliary device, and provides an explosive wave simulation shock tube rotary type sparse wave eliminating device and an adjusting method thereof in order to solve the problem that the pressure history of shock waves in a test section is affected due to the fact that sparse waves generated by a shock tube opening are transmitted back to the upstream in an experiment. The device comprises a hollow cylindrical bracket assembly, an adapter flange arranged at one end of the bracket assembly, a plurality of circular rotor wave-absorbing plates arranged in the bracket assembly, and a circular stator wave-absorbing plate connected with the other end of the adapter flange, the support assembly comprises a plurality of annular support single bodies which are axially connected in parallel. The adapter flange comprises a circular ring and an adapter ring arranged on the periphery of the circular ring. The rotor wave absorbing plate comprises two sliding rails, a second cylindrical table and a plurality of rotor blades which are respectively connected with the two sliding rails and the second cylindrical table; the stator wave absorbing plate comprises an outer edge flange, a first cylindrical table and a plurality of blocking blades connected with the outer edge flange and the first cylindrical table respectively.

Description

Technical Field

[0001] The present invention relates to an auxiliary device for simulating shock waves in an explosion wave simulation shock tube and an adjustment method thereof, and particularly relates to a rotary rarefaction wave elimination device for an explosion wave simulation shock tube and an adjustment method thereof. Background Art

[0002] The explosion wave simulation shock tube is an important test platform for simulating explosion shock waves and is widely used in many fields such as the evaluation of the anti-explosion shock performance of bridges, buildings, vehicles, and the research on biological blast injuries. The peak pressure and positive pressure action time of the shock waves generated by it are the key indicators for evaluating the simulation effect.

[0003] For a shock tube used to simulate the explosion wave action environment, the shock wave overpressure generated inside it will decay with time. When the shock wave overpressure decays to a certain value or below, the airflow behind the shock wave changes from supersonic to subsonic. At this time, after the shock wave passes through the shock tube nozzle, a rarefaction wave propagating reversely into the shock tube will be generated. During the experiment, the rarefaction wave will destroy the flow field environment in the expansion section of the shock tube, affect the shock wave pressure history in the test section, and lead to inaccurate experimental data. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the rarefaction wave generated at the shock tube nozzle during the experiment propagates upstream, thereby affecting the shock wave pressure history in the test section, and to provide a rotary rarefaction wave elimination device for an explosion wave simulation shock tube and an adjustment method thereof.

[0005] The design idea of the present invention is: design a device combining a stator wave elimination plate and a rotor wave elimination plate to dynamically adjust the opening area of the shock tube nozzle, thereby realizing the elimination of the rarefaction wave at the shock tube nozzle.

[0006] To achieve the above object, the technical solution provided by the present invention is:

[0007] A rotary rarefaction wave elimination device for an explosion wave simulation shock tube, characterized in that:

[0008] It includes a bracket assembly in the shape of a hollow cylinder, an adapter flange provided at one end of the bracket assembly, a plurality of rotor wave elimination plates provided inside the bracket assembly, and a stator wave elimination plate provided at the end of the adapter flange away from the bracket assembly; wherein the stator wave elimination plate is fixed at the nozzle of the explosion wave simulation shock tube and is adapted to the outer diameter of the nozzle, and the adapter flange, the bracket assembly, and the rotor wave elimination plates are all located outside the nozzle;

[0009] The bracket assembly includes a plurality of annular bracket monomers connected in sequence along the axial direction, and the bracket monomer at the end is connected to the adapter flange; each bracket monomer includes two parallel bracket rings and a plurality of connecting rods for connecting the two bracket rings, and a plurality of pulleys are arranged along the circumferential direction on the inner side of each bracket ring;

[0010] Multiple rotor wave - damping plates are respectively arranged in multiple support units; the rotor wave - damping plates include two parallel circular - ring - shaped slide rails respectively arranged on the inner sides of two support rings and cooperating with the pulleys, a second cylindrical platform arranged at the central position between the two slide rails, and a number of rotor blades arranged radially and respectively connected to the two slide rails and the second cylindrical platform; each rotor blade is wedge - shaped, with its large end connected to the inner sides of the two slide rails and its small end connected to the side surface of the second cylindrical platform; a lever for connecting with an external power mechanism is arranged on the outer side of the large end of at least one rotor blade, the lever passes between the two support rings and is limited by a connecting rod; a central through - hole along the axial direction is arranged on the second cylindrical platform;

[0011] The stator wave - damping plate includes an outer - rim flange in the shape of a circular ring connected to the adapter flange, a first cylindrical platform arranged at the central position of the outer - rim flange, and a number of blocking blades arranged radially and respectively connected to the outer - rim flange and the first cylindrical platform; each blocking blade is wedge - shaped, with its large end connected to the inner side of the outer - rim flange and its small end connected to the side surface of the first cylindrical platform, a central rotating shaft for cooperating with the central through - hole is arranged on one bottom surface of the first cylindrical platform, and the central rotating shaft passes through the central through - holes on each rotor wave - damping plate, so that the rotor wave - damping plate can rotate around the central rotating shaft under the cooperation of the pulley and the slide rail;

[0012] The number of rotor blades in the rotor wave - damping plate is the same as the number of blocking blades in the stator wave - damping plate.

[0013] Further, within a range of arc length X between two parallel support rings, no connecting rod is arranged, the lever is located within the range of arc length X, and the central angle corresponding to the part with arc length X of the circle where the support ring is located is 60° - 120°; multiple connecting rods are arranged at the remaining positions, and the arc - length distances between adjacent two connecting rods on the circle are equal.

[0014] Further, adjacent two support units are connected by welding, and the connection is firm.

[0015] Further, the adapter flange includes a circular ring and an adapter ring arranged on the outer circumference of the circular ring, and a plurality of first through - holes arranged circumferentially are arranged on the adapter ring; a plurality of second through - holes arranged circumferentially and aligned with the first through - holes are arranged on the outer - rim flange of the stator wave - damping plate; the stator wave - damping plate and the adapter flange are connected by a plurality of connecting pieces passing through the first through - holes and the second through - holes; the adapter flange and the support unit at the end are all connected by welding.

[0016] Further, a plurality of the pulleys are evenly distributed along the inner circumference of the support ring; the number of pulleys on the two support rings of the support unit is the same and the positions are arranged in one - to - one correspondence.

[0017] Further, the number of pulleys provided on each of the support monomers is twenty.

[0018] Further, the number of the support monomers is four.

[0019] Further, the number of blocking vanes in the stator shock wave eliminating plate is ten. The adjustment of the opening area ratio from 0 to 80% can be completed by using ten rotor vanes and blocking vanes.

[0020] Further, the central angle of the circle where the support ring corresponding to the part with an arc length of X is located is 90°, and the included angle between two adjacent blocking vanes is 29.2°.

[0021] Meanwhile, the present invention also provides an adjustment method for the rotational rarefaction wave elimination device of the explosion wave simulation shock tube, which is characterized in that it includes the following steps:

[0022] Step 1: Connect each lever at the lower end of the rotor shock wave eliminating plate to an independent external power mechanism unit respectively;

[0023] Step 2: Control each independent external power mechanism unit to rotate the rotor shock wave eliminating plate around the central rotating shaft to a preset position, and then use a test device to measure the elimination situation of the rarefaction wave;

[0024] Step 3: If the elimination of the rarefaction wave reaches the expected effect, maintain the rotation angle of each rotor shock wave eliminating plate to complete the adjustment of the rotational rarefaction wave elimination device of the explosion wave simulation shock tube; otherwise, return to Step 2 to re-adjust the rotation angle of at least one rotor shock wave eliminating plate until the expected effect is achieved.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The rotational rarefaction wave elimination device of the explosion wave simulation shock tube provided by the present invention adopts a combined structure of multiple rotor shock wave eliminating plates and a stator shock wave eliminating plate. Compared with a single shock wave eliminating plate structure, it can dynamically adjust the opening area ratio to achieve the elimination of rarefaction waves in different stages of the overall positive pressure process of the shock wave; at the same time, it greatly reduces the blocking area required for a single shock wave eliminating plate, can effectively reduce the peak pressure of the reflected wave formed after the shock wave acts on the blocking vanes, and further improves the internal flow field environment of the pipeline;

[0027] 2. The rotational rarefaction wave elimination device of the explosion wave simulation shock tube provided by the present invention reduces the rotation angle required for each rotor shock wave eliminating plate during the whole working process of the device; among them, the rotation angle of the rotor shock wave eliminating plate with the largest working stroke does not exceed 29.2°, and the working stroke of the rotor shock wave eliminating plate with the smallest stroke does not exceed 6.8°, which can effectively reduce the power demand of the device;

[0028] 3. The adjustment method of the explosion wave simulation shock tube rotary rarefaction wave elimination device provided by the present invention can independently control the rotation angle of each rotor wave elimination plate, which is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of an embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0030] Figure 2 It is the front view of the embodiment of the present invention;

[0031] Figure 3 It is Figure 2 the right view of;

[0032] Figure 4 It is Figure 2 the rear view of;

[0033] Figure 5 It is the front view of the stator wave elimination plate in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0034] Figure 6 It is the side view of the stator wave elimination plate in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0035] Figure 7 It is the front view of the adapter flange in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0036] Figure 8 It is the side view of the adapter flange in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0037] Figure 9 It is the schematic structural diagram of the bracket monomer in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0038] Figure 10 It is the front view of the bracket monomer in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0039] Figure 11 It is the side view of the bracket monomer in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0040] Figure 12 It is the schematic structural diagram of the rotor wave elimination plate in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0041] Figure 13 It is the front view of the rotor wave elimination plate in the embodiment of the explosion wave simulation shock tube rotary rarefaction wave elimination device of the present invention;

[0042] Figure 14 This is a side view of the rotor wave elimination plate in the embodiment of the rotary rarefaction wave elimination device for the explosion wave simulation shock tube of the present invention;

[0043] Figure 15 This is a front view of the rotary rarefaction wave elimination device for the explosion wave simulation shock tube of the present invention at an open area ratio of 80%;

[0044] Figure 16 This is a front view of the rotary rarefaction wave elimination device for the explosion wave simulation shock tube of the present invention at an open area ratio of 0%;

[0045] Explanation of reference numerals:

[0046] 1 - stator wave elimination plate, 11 - outer flange, 1101 - second through hole, 12 - blocking blade, 13 - first cylindrical platform, 14 - central rotating shaft; 2 - adapter flange, 21 - ring, 22 - adapter ring, 2201 - first through hole; 3 - support assembly, 31 - support unit, 311 - support ring, 312 - connecting rod; 4 - pulley; 5 - rotor wave elimination plate, 51 - slide rail, 52 - rotor blade, 53 - second cylindrical platform, 5301 - central through hole, 54 - lever. Detailed implementation manners

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] The principle of this embodiment is that the device eliminates the rarefaction wave at the pipe orifice by reducing the open area at the outlet of the shock tube, accelerating the post - wave air flow to the speed of sound or reducing the shock wave pressure to atmospheric pressure.

[0049] A rotary rarefaction wave elimination device for an explosion wave simulation shock tube, see Figures 1 to 4 , including a support assembly 3 in the shape of a hollow cylinder, an adapter flange 2 provided at one end of the support assembly 3, a plurality of rotor wave elimination plates 5 provided inside the support assembly 3, and a stator wave elimination plate 1 provided at the end of the adapter flange 2 away from the support assembly 3; wherein the stator wave elimination plate 1 is fixed at the orifice of the explosion wave simulation shock tube and is adapted to the outer diameter of the orifice, and the adapter flange 2, the support assembly 3 and the rotor wave elimination plates 5 are all located outside the orifice;

[0050] As Figures 9 to 11, the support assembly 3 includes four annular support monomers 31 connected axially in sequence, and the support monomer 31 at the end is connected to the adapter flange 2; each support monomer 31 includes two parallel support rings 311 and fifteen connecting rods 312 for connecting the two support rings 311, and twenty pulleys 4 are further arranged on the inner side of each support ring 311; and on each support monomer 31, the twenty pulleys 4 are symmetrically arranged on the two support rings 311 with respect to the axial symmetry plane of the support monomer 31, and the arc length distances between adjacent two pulleys 4 on the same support ring 311 are equal.

[0051] As Figure 7 and Figure 8 , the adapter flange 2 includes a circular ring 21 and an adapter ring 22 arranged on the outer periphery of the circular ring 21, and a plurality of first through holes 2201 arranged circumferentially are provided on the adapter ring 22, wherein the adapter flange 2 and the support monomer 31 at the end are connected by welding.

[0052] As Figures 12 to 14 , four rotor wave-damping plates 5 are respectively arranged in the four support monomers 31; the rotor wave-damping plate 5 includes two parallel circular ring-shaped slide rails 51 respectively arranged on the inner sides of the two support rings 311 and cooperating with the pulleys 4, a second cylindrical platform 53 arranged at the central position of the two slide rails 51, and ten rotor blades 52 respectively connected to the two slide rails 51 and the second cylindrical platform 53; each rotor blade 52 is in a wedge shape, its large end is connected to the inner sides of the two slide rails 51, and its small end is connected to the side surface of the second cylindrical platform 53; a lever 54 for connecting to an external power mechanism is further arranged on the outer side of the large end of one of the rotor blades 52, and a central through hole 5301 along the axial direction is provided on the second cylindrical platform 53, so that the rotor wave-damping plate 5 can rotate around the central rotating shaft (14) under the cooperation of the pulley 4 and the slide rail 51;

[0053] As Figure 5 and Figure 6 , the stator wave-damping plate 1 includes an outer edge flange 11 in a circular ring shape connected to the adapter flange 2, a first cylindrical platform 13 arranged at the central position of the outer edge flange 11, and ten blocking blades 12 respectively connected to the outer edge flange 11 and the first cylindrical platform 13; a plurality of second through holes 1101 aligned with the first through holes 2201 and arranged circumferentially are provided on the outer edge flange 11, each blocking blade 12 is in a wedge shape, its large end is connected to the inner side of the outer edge flange 11, and its small end is connected to the side surface of the first cylindrical platform 13, a central rotating shaft 14 cooperating with the central through hole 5301 is provided on one bottom surface of the first cylindrical platform 13, and the central rotating shaft 14 passes through the central through hole 5301 on each rotor wave-damping plate 5; the stator wave-damping plate 1 and the adapter flange 2 are connected by a plurality of bolts passing through the first through holes 2201 and the second through holes 1101.

[0054] Moreover, to ensure the normal operation of the device, the number of rotor blades 52 in the rotor wave eliminator 5 is the same as the number of blocking blades 12 in the stator wave eliminator 1.

[0055] Specifically, to ensure the rotation of the rotor wave eliminator 5 within a certain angle, no connecting rod 312 is provided within the range of arc length X between two parallel support rings 311. The lever 54 is located within the range of arc length X, and the central angle of the circle where the support ring 311 is located corresponding to the part with arc length X is 90°. A plurality of connecting rods 312 are provided at other positions, and the arc length distances between adjacent two connecting rods 312 in the circle are equal.

[0056] In this embodiment, the central angle of the fan-shaped surface where the blocking blade 12 is located is 6.8°, and the included angle between adjacent two blocking blades 12 is 29.2°. When the stator wave eliminator 1 is installed at the nozzle of the shock tube, the relative opening area ratio to the nozzle is 20%. The rotation range of the rotor wave eliminator 5 is limited within 29.2° clockwise to 29.2° counterclockwise. Thus, the lever 54 can pass through the gap between the two support rings 311 in the support 3 and drive the rotor wave eliminator 5 to rotate without being restricted by the connecting rod 312.

[0057] Meanwhile, this embodiment also provides an adjustment method for the above-mentioned explosion wave simulation shock tube rotary rarefaction wave elimination device.

[0058] Step 1: Connect each lever 54 at the lower end of the rotor wave eliminator 5 to an independent external power mechanism unit respectively.

[0059] Step 2: Control each independent external power mechanism unit to rotate the rotor wave eliminator 5 around the central rotating shaft 14 to a preset position, and then use a test device to measure the elimination situation of the rarefaction wave.

[0060] Step 3: If the elimination of the rarefaction wave reaches the expected effect, maintain the rotation angle of each rotor wave eliminator 5 to complete the adjustment of the explosion wave simulation shock tube rotary rarefaction wave elimination device; otherwise, return to Step 2 to re-adjust the rotation angle of at least one rotor wave eliminator 5 until the expected effect is achieved.

[0061] The opening area of this embodiment can be adjusted within the range of 0 - 80%. Figure 15 and Figure 16 The front views of this embodiment in two cases of 0% opening area ratio and 80% opening area ratio are given.

[0062] In an actual experimental scenario, according to requirements, stator shock wave elimination plates 1 and rotor shock wave elimination plates 5 of different specifications and different numbers of layers can be configured to meet the requirements of changing the adjustment range of the opening area of the above device or reducing the overall weight of the above device. Table 1 shows the opening area ratios of the device when the number of designed rotor shock wave elimination plates 5 is 1 to 4 for stator shock wave elimination plates 1 and rotor shock wave elimination plates 5 with different blockage ratios. Where b is the blockage ratio of a single rotor shock wave elimination plate 5, the maximum opening area ratio r max = 1 - b, and the minimum opening area ratio r min = max{100% - (n + 1)b, 0}.

[0063] Table 1 Opening area ratios of the rotating rarefaction wave elimination device of the shock tube for explosion wave simulation

[0064]

[0065] It should be noted that the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art in the technical field disclosed by the present invention can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A rotational rarefaction wave elimination device for an explosion wave simulation shock tube, characterized in that: It includes a bracket assembly (3) in the shape of a hollow cylinder, an adapter flange (2) arranged at one end of the bracket assembly (3), a plurality of rotor shock wave elimination plates (5) arranged inside the bracket assembly (3), and a stator shock wave elimination plate (1) arranged at the end of the adapter flange (2) away from the bracket assembly (3); wherein the stator shock wave elimination plate (1) is fixed at the nozzle of the explosion wave simulation shock tube and is adapted to the outer diameter of the nozzle, and the adapter flange (2), the bracket assembly (3), and the rotor shock wave elimination plates (5) are all located outside the nozzle; The bracket assembly (3) includes a plurality of annular bracket monomers (31) connected in sequence along the axial direction, and the bracket monomer (31) at the end is connected to the adapter flange (2); each bracket monomer (31) includes two parallel bracket rings (311) and a plurality of connecting rods (312) for connecting the two bracket rings (311), and a plurality of pulleys (4) are arranged along the circumferential direction on the inner side of each bracket ring (311); A plurality of rotor shock wave elimination plates (5) are respectively arranged in a plurality of bracket monomers (31); the rotor shock wave elimination plate (5) includes two parallel circular ring-shaped slide rails (51) respectively arranged on the inner sides of the two bracket rings (311) and cooperating with the pulleys (4), a second cylindrical platform (53) arranged at the central position of the two slide rails (51), and a plurality of rotor blades (52) arranged radially and respectively connected to the two slide rails (51) and the second cylindrical platform (53); each rotor blade (52) is in a wedge shape, with its large end connected to the inner sides of the two slide rails (51) and its small end connected to the side surface of the second cylindrical platform (53); wherein a lever (54) for connecting to an external power mechanism is arranged on the outer side of the large end of at least one rotor blade (52), and the lever (54) passes between the two bracket rings (311) and is limited by the connecting rod (312); a central through hole (5301) along the axial direction is arranged on the second cylindrical platform (53); The stator shock wave elimination plate (1) includes an annular outer edge flange (11) connected to the adapter flange (2), a first cylindrical platform (13) arranged at the central position of the outer edge flange (11), and a plurality of blocking blades (12) arranged radially and respectively connected to the outer edge flange (11) and the first cylindrical platform (13); each blocking blade (12) is in a wedge shape, with its large end connected to the inner side of the outer edge flange (11) and its small end connected to the side surface of the first cylindrical platform (13), and a central rotating shaft (14) cooperating with the central through hole (5301) is arranged on one bottom surface of the first cylindrical platform (13), and the central rotating shaft (14) passes through the central through holes (5301) on each rotor shock wave elimination plate (5), so that the rotor shock wave elimination plate (5) can rotate around the central rotating shaft (14) under the cooperation of the pulley (4) and the slide rail (51); The number of rotor blades (52) in the rotor shock wave elimination plate (5) is the same as the number of blocking blades (12) in the stator shock wave elimination plate (1).

2. The rotational rarefaction wave elimination device for an explosion wave simulation shock tube according to claim 1, characterized in that: Within the range of arc length X between two parallel said support rings (311), no connecting rod (312) is provided, the lever (54) is located within the range of arc length X, and the central angle of the circle where the support ring (311) corresponding to the part with arc length X is located is 60° - 120°; at other positions, a plurality of connecting rods (312) are provided, and the arc length distances between adjacent two connecting rods (312) on the circle are equal.

3. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 1 or 2, characterized in that: Adjacent two said support monomers (31) are connected by welding.

4. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 3, characterized in that: The adapter flange (2) includes a circular ring (21) and an adapter ring (22) provided on the outer circumference of the circular ring (21), and a plurality of first through holes (2201) arranged circumferentially are provided on the adapter ring (22); On the outer edge flange (11) of the stator wave elimination plate (1), a plurality of second through holes (1101) aligned with the first through holes (2201) and arranged circumferentially are provided; the stator wave elimination plate (1) and the adapter flange (2) are connected by a plurality of connecting pieces passing through the first through holes (2201) and the second through holes (1101); Between the adapter flange (2) and the support monomer (31) located at the end, they are all connected by welding.

5. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 4, characterized in that: A plurality of said pulleys (4) are evenly distributed along the inner circumference of the support ring (311); The number of pulleys (4) on the two support rings (311) of the support monomer (31) is the same and they are arranged in one-to-one correspondence.

6. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 5, characterized in that: The number of pulleys (4) provided on each support monomer (31) is twenty.

7. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 6, characterized in that: The number of support monomers (31) is four.

8. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 7, characterized in that: The number of blocking vanes (12) in the stator wave elimination plate (1) is ten.

9. The blast wave simulation shock tube rotary rarefaction wave elimination device according to claim 2, characterized in that: The central angle of the circle where the support ring (311) corresponding to the part with arc length X is located is 90°, and the included angle between adjacent two said blocking vanes (12) is 29.2°.

10. A method for adjusting the explosion wave simulation shock tube rotary rarefaction wave elimination device according to any one of claims 1-9, characterized in that, Including the following steps: Step 1: Connect each lever (54) at the lower end of the rotor wave elimination plate (5) to an independent external power mechanism unit respectively; Step 2: Control each independent external power mechanism unit to rotate the rotor wave elimination plate (5) around the central rotating shaft (14) to a preset position, and then use a test device to measure the elimination situation of the rarefaction wave; Step 3. If the elimination of the rarefaction wave achieves the expected effect, maintain the rotation angle of each rotor wave eliminator (5) to complete the adjustment of the rotary rarefaction wave elimination device for the shock tube in the explosion wave simulation; otherwise, return to Step 2 to re-adjust the rotation angle of at least one rotor wave eliminator (5) until the expected effect is achieved.

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