Thermochemical unbalanced flow field data calculation method and device utilizing GPU acceleration

A non-equilibrium and thermochemical technology, applied in the computer field, can solve problems such as simulation of thermochemical non-equilibrium flow problems

Active Publication Date: 2020-06-02
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] Based on this, it is necessary to address the above technical problems and provide a thermochemical non-equilibrium flow field data calculation meth...

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  • Thermochemical unbalanced flow field data calculation method and device utilizing GPU acceleration
  • Thermochemical unbalanced flow field data calculation method and device utilizing GPU acceleration
  • Thermochemical unbalanced flow field data calculation method and device utilizing GPU acceleration

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[0042] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0043]The GPU-accelerated thermochemical non-equilibrium flow field data calculation method provided by this application is implemented based on the CUDA (Compute Unified Device Architecture, unified computing architecture) architecture. CUDA is an integrated programming environment for GPU general computing launched by NVIDIA. In this integrated programming environment, developers can perform GPU programming in a high-level language environment without understanding graphics knowledge, and then efficiently and quickly solve complex calculations. question. In the CUDA arc...

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Abstract

The invention relates to a thermochemical unbalanced flow field data calculation method and device utilizing GPU acceleration. The method comprises the following steps of: ; the method comprises the following steps: reading preset grid data, a chemical reaction model and an initial incoming flow condition through a CPU; storing in a global memory; the method comprises the following steps: readinggrid data and initial incoming flow conditions from a global memory through a GPU; grid point calculation in a preset flow field area is carried out; calculating a result and an initial incoming flowcondition according to the grid points; updating boundary conditions, reading a chemical reaction model from a global memory through a GPU (Graphics Processing Unit), calculating a chemical reaction source item according to the chemical reaction model and the initial incoming flow condition, iteratively calculating flow field data by the GPU according to the chemical reaction source item, a boundary condition and a preset flux calculation format, and storing the flow field data into the global memory by the GPU; and the CPU reads the flow field data from the global memory and outputs the flowfield data. By adopting the method, the flow field data calculation efficiency can be improved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method and device for calculating thermochemical non-equilibrium flow field data accelerated by GPU. Background technique [0002] When the aircraft is flying at hypersonic speed, the temperature of the air around the aircraft rises rapidly. At this time, the state characteristics of the gas begin to change, and the "thermochemical non-equilibrium effect" gradually appears. The emergence of thermochemical non-equilibrium effects will seriously affect the aerodynamic thermal environment, aerodynamic load and electromagnetic signal transmission of the aircraft. Since it is difficult for ground test equipment to accurately simulate such phenomena, numerical calculations have become an important part of studying thermochemical non-equilibrium. important method of mobility. [0003] Since the governing equations of thermochemical non-equilibrium flow are nonlinear and t...

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Application Information

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IPC IPC(8): G06F30/20G06F30/15G06F111/10
CPCY02T90/00
Inventor 李桦于航田正雨谢文佳赖剑奇张烨杨帆
Owner NAT UNIV OF DEFENSE TECH
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