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Fluid simulation method for target infrared wake characteristics of water scene

A fluid simulation and scene technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that thermodynamic methods cannot simulate water flow characteristics, fluid methods cannot simulate infrared characteristics, etc.

Active Publication Date: 2016-06-01
ZHEJIANG UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to simulate the mechanical characteristics and infrared characteristics of the target in the water scene, solve the problem that the existing fluid method cannot simulate the infrared characteristics and the existing thermodynamic method cannot simulate the flow characteristics of the water body, and provide a target infrared trail characteristic in the water scene fluid simulation method

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  • Fluid simulation method for target infrared wake characteristics of water scene
  • Fluid simulation method for target infrared wake characteristics of water scene
  • Fluid simulation method for target infrared wake characteristics of water scene

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Embodiment Construction

[0060] The fluid simulation method for the infrared wake characteristics of the target in the water scene includes the following steps:

[0061] 1) Voxelize the model in the scene to generate solid particles;

[0062] 2) Add liquid particles in the area where liquid exists;

[0063] 3) For each time frame, use SPH to numerically simulate the mechanical properties of the fluid;

[0064] 4) For each time frame, use the transient heat conduction equation to numerically simulate the thermodynamic properties of the fluid and draw infrared characteristic graphics;

[0065] Described step 1) is:

[0066] (1.1) Calculate the AABB bounding box C of the model based on the vertex position data of the model b ;

[0067] (1.2) put C b Evenly divided into X*Y*Z sub-cubes C i,j,k

[0068] Among them, X, Y, and Z are the resolutions of the space in the three directions of xyz, i∈[0,X),j∈[0,Y),k∈[0,Z);

[0069] (1.3) for each C i,j,k Find the intersection with the model, if there is a...

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Abstract

The invention discloses a fluid simulation method for the target infrared wake characteristics of a water scene. The fluid simulation method comprises the following steps: 1) carrying out voxelization on a model in the scene to generate solid particles; 2) adding liquid particles in an area with liquid; 3) for each time frame, carrying out numerical simulation on the mechanical characteristics of the fluid by utilizing SPH; and 4) for each time frame, carrying out numerical simulation and infrared characteristic graph drawing on the thermodynamic characteristics of the fluid by utilizing a transient heat transfer equation. According to the method, the demand for calculating the thermodynamic characteristics in fluid media is solved; the mechanical characteristics and infrared characteristics in the water scene can be simulated truly, and the new-found infrared phenomenon in recent years: the infrared wakes generated by the ship in the sailing process, is successfully simulated under laboratory environment.

Description

technical field [0001] The invention relates to the field of numerical calculation of fluid simulation and the field of numerical calculation of thermodynamics. In particular, the invention relates to a fluid simulation method for infrared trail characteristics of a target in a water scene. Background technique [0002] In recent years, with the improvement of the imaging resolution of infrared thermal imaging cameras, new infrared features of ships sailing have been discovered in remote sensing and aerial photography: ships will leave infrared trails when sailing in water scenes. However, the existing thermodynamic calculation methods are generally aimed at numerical simulation of static materials, which cannot simulate this feature well; and the methods in the field of numerical calculation of fluid simulation are mainly aimed at calculating the mechanical characteristics of simulated fluids, which cannot simulate thermodynamics. heat conduction characteristics. Therefor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 廖惟博张少雄王章野
Owner ZHEJIANG UNIV
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