A Multiblock Flow Solver with Multigrid Accelerating Technique
A multiblock, multigrid flow solver named ATTF (Analysis Toolkits for Transonic Flows) for the solution of three dimensional compressible Euler/Navier-Stokes equations based on structured grid is presented. The flow solver is a cell centered finite volume scheme with three spatial schemes: Jamesons center difference method with artificial dissipation. Roes upwind scheme and Van leers upwind scheme. It solves the thin layer Navier-Stokes equations with the choice of two different turbulence models: Baldwin-Lommax turbulence model and one equation Spalart-Allmaras turbulence model. The use of the local time stepping, implicit variablecoefficient residual smoothing and multigrid technique results in an efficient and robust scheme. The approach of multiblock combined with multigrid technique improves the efficiency and versatility of the flow solver, and the code can be applied to different flow simulation with simple or complex configurations easily. The code is programmed with Fortran90, and a dynamic memory space management technique is used to optimize the limited memory space and carry out different flow simulations with different size of data on a single computer. The code needs only to be compiled for once to generate one executable file, and this file can be used to calculate different flow simulations with various grid topologies as long as the correct boundary condition and necessary control information are inputted correctly. Results are presented for flow simulations over several configurations to evaluate the capacity and efficiency of the new developed flow solver. All test cases presented in this paper were carried out with the same executable file from ATTF.
transonic flow Euler/Navier-Stokes equations turbulence model multiblock multigrid dynamic memory space management Baldwin-Lomax model Spalart-Allmaras model
Li Guangning Li Fengwei Sang Weimin Zhou Zhihong
College of Aeronautics, Northwestern Polytechnical University, Xian 710072, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
323-327
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）