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

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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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 method and device that can solve the problem that the CPU calculation method cannot quickly and efficiently simulate the thermochemical non-equilibrium flow problem.

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