SIMPLE-TS 2D

From HP-SEE Wiki

Revision as of 13:53, 25 July 2011

General Information

• Application's name: SIMPLE-TS - Semi-Implicit Method for Pressure- Linked Equations - Time Step
• Virtual Research Community: Computational Physics [A2]
• Scientific contact: Dr. Kiril Shterev, kshterev@imbm.bas.bg
• Technical contact: Dr. Kiril Shterev, kshterev@imbm.bas.bg
• Developers: Dr. Kiril Shterev and Prof. Stefan Stefanov, Department of Complex and Multiphase Flow, Institute of Mechanics - BAS, Bulgaria
• Web site: http://www.imbm.bas.bg/index.php/en_US/pressure-based-finite-volume-method

Short Description

Short description: Micro mechanical devices are rapidly emerging technology, where new potential applications are continuously being found. A simulation of internal and external gas flows in or aroundthese devices is important for their design. The flow motions described on the basis of the Navier-Stokes-Fourier compressible equations with diffusion coefficients determined by the first approximation of the Chapman-Enskog theory for the low Knudsen numbers.The gas flows are characterized with areas of low speed flows (low Reynolds numbers). The flows can go from high speed supersonic to very low speed regimes down to the incompressible limit. This made the pressure based numerical methods very suitable to be used for calculation of this kind of gas flows. The finite volume method SIMPLE-TS (a modification of SIMPLE created by K. S. Shterev and S. K. Stefanov) is used.

Problems Solved

Steady and unsteady flow past square in a microchannel

Scientific and Social Impact

Micro mechanical devices are rapidly emerging technology, where new potential applications are continuously being found. A simulation of internal and external gas flows in or aroundthese devices is important for their design.

Collaborations and Beneficiaries

Institute of Mechanics - BAS and Institute of Information and Communication Technologies - BAS

Technical Features and HP-SEE Implementation

• Primary programming language: C++
• Parallel programming paradigm: SIMD
• Main parallel code: MPI
• Pre/post processing code: None
• Application tools and libraries: C++ compiler
• Number of cores required: Strongly depend from calculated problem (from 1 to 600)
• Minimum RAM/core required: Strongly depend from calculated problem (from 10MB to 2GB per core)
• Storage space during a single run: Strongly depend from calculated problem (from 10MB to 200GB)
• Long-term data storage: 50GB

Usage Example

Source code, some examples and publications describing the algorithm and parallel organisations are freely available on: http://www.imbm.bas.bg/index.php/en_US/pressure-based-finite-volume-method

Publications

• Kiril S. Shterev, Stefan K. Stefanov, and Emanouil I. Atanassov, A parallel algorithm with improved performance of Finite Volume Method (SIMPLE-TS), ”, 8th LSSC’11, June 6-10, 2011, Sozopol, Bulgaria, accepted to LNCS, 8 pages, 2011.