Besides experiment, the numerical simulation of the interior flow field iscarried out, which is filled with unstructured grids, the control equations arediscreted with finite volume method and velocity-pressure is solved couplingwith SIMPLEC method, no-slip and no-penetration condition for solidboundary, no-slip condition for wall-liquid boundary, zero-shear condition forfree liquid surface, in the end abundant conclusions are obtained.
In the numerical procedure,the unstructured meshes are generated in multiply connected domains by Delaunay Triangularization Method,the governing equations are discretized by the SIMPLE Algorithm,and the sparse matrices are solved by a parallel GMRES Algorithm based on a PC network with MPI.
Numerical simulation was conducted to investigate heat transfer in rectangular channel with both rib-roughened wall and film hole suctions at Reynolds number 60000,rotation number 0.11,suction ratio of 0.22.A finite volume method with unstructured meshes was used to solve the three dimensions compressible Navier-Stokes equations.
Both physical and mathematical models are presented for predicting the running resistance of the amphibious caterpillar vehicle. By using the non-structured mesh, k-ε turbulent model and finite volume method to calculate the flow field and pressure fielf, the prediction is done to the running resistance under given conditons. Visual analysis is also done to the flow field.
This paper considers the ambient air ambient air flow field of the submissile which is flying in high speed as the research subject. Through two dimensional modeling and non-structured mesh gene ration and adopting Spalart-Allmaras turbulent model for dispersed resolution ,the temperature,pressure,velocity distributing of the air flow field around the submissileare studied by analyzing and simulating. Meanwhile,through compare of the simulation and actual condition,reliability of the simulation and feasibilit y of the Spalart-Allmaras model are assured.