Parallel acceleration method and system of lattice Boltzmann method

A lattice Boltzmann, lattice point technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of high consumption of time, power and maintenance, and reduce construction costs and management. Power consumption, the effect of improving processing performance

Active Publication Date: 2013-02-27
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology

[0032] The technical problem to be solved by the present invention is to overcome the defects that the current use of X86 server clusters for LBM processing consumes a lot of time, power and maintenance

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  • Parallel acceleration method and system of lattice Boltzmann method
  • Parallel acceleration method and system of lattice Boltzmann method
  • Parallel acceleration method and system of lattice Boltzmann method

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Embodiment Construction

[0058] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. The embodiments of the present invention and the combinations of the various features in the embodiments are within the protection scope of the present invention on the premise of no conflict.

[0059] Such as image 3 As shown, the lattice Boltzmann parallel acceleration method in the embodiment of the present application mainly includes the following steps.

[0060] In step S310, the CPU end divides the grid according to the physical problem, determines the macroscopic parameters and their initial values ​​on all grid points of the grid, and transmits them to the MIC end. The macroscopic parameters include, for example, density, velocity, reference length, Reynolds n...

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Abstract

The invention discloses a parallel acceleration method and a system of a lattice Boltzmann method (LBM), which overcome the defect that an X86 server cluster is higher in consumption of time and the like for LBM treatment at present. The method comprises the steps that a CPU (Central Processing Unit) end determines macro parameters and initial values of the macro parameters of all lattice points of a grid, defines a data structure and a storage mode for storing equilibrium distribution functions of all the lattice points in all directions and the macro parameters of all the lattice points, computes the equilibrium distribution functions of all the lattice points in all the directions according to the macro parameters, and sets thread execution configuration of an inner core of an MIC (Many Integrated Core) card; an MIC end conducts parallel computation of migration and impact and parallel boundary processing according to the macro parameters, the initial values of the macro parameters, the thread execution configuration and the equilibrium distribution functions of all the lattice points of the grid in all the directions, and obtains a convergence status according to the equilibrium distribution functions of all the lattice points of the grid in all the directions. With the adoption of the method and the system, the processing property of the lattice Boltzmann method is improved, and the demand of fluid simulation is satisfied.

Description

technical field [0001] The invention relates to the field of computational fluid dynamics, in particular to a parallel acceleration method and system of a lattice Boltzmann method. Background technique [0002] The Lattice Boltzmann Method (LBM) is a mesoscopic method between the microscopic molecular dynamics method and the macroscopic method based on the continuum assumption. This method is different from the traditional fluid simulation method. It is based on the molecular kinetic theory, and obtains the macroscopically averaged properties by tracking the transport of the particle distribution function and then calculating the moment of the distribution function. [0003] The dynamic theory of the lattice Boltzmann method makes it more effective in simulating many complex flows, such as porous media flow, suspension flow, multiphase flow, multicomponent flow, etc. The Lattice Boltzmann method has inherent parallel characteristics, simple boundary processing, and easy pro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张广勇张清
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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