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The prediction of cross-flow instabilities transition phenomenon is difficult to be combined with modern CFD parallel computation. To solve this problem, on the basis of SA-γ-Reθt transition model, a new transition model is presented here, which solves cross-flow displacement thickness Reynolds number locally using three-dimentional boundary layer similar solution and also sets cross-flow instabilities...
The progress of numerical simulation for high entrained gas-liquid two phase flow were summarized and analyzed. The results show that the Euler-Euler method is the most suitable for the air-water two-phase flow. The advantages and disadvantages of three multiphase flow models (VOF, Mixture and Eulerian model) are analyzed and the results show that the Eulerian model is most popular and accurate for...
Based on turbulence model the standard k-ε model provided by professional computational fluid dynamics software Fluent, the 3D steady wind flow field around Changsha Huanghua International Airport in atmospheric boundary layer is numerically simulated. The wind pressure coefficients, the wind environment around the Airport etc. under different wind direction are studied to give for design reference...
Based on stable incompressible Reynolds-averaged Navier-Stokes equations and turbulence model, three dimension distribution on smoke of kitchen in an apartment unit is numerically simulated. A source term added in the concentration diffusion equation represents smoke produce rate. The contaminant concentration and velocity problems are resolved by control volume method in interlacing grid with SIMPLE...
Turbulence model and computational grid are playing important roles in calculating the aerodynamic performance of wind turbine airfoils. In order to find a suitable turbulence model and computational grid, to calculate the aerodynamic performance data of wind turbine airfoil more accurately as well as to further understand the nature of flow over an airfoil, this article simulates the flow over the...
By the steady state incompressible Reynolds-averaged Navier-Stokes equations, turbulence model, the finite volume method with interlacing of discretization, the three-dimension airflow and temperature fields inside a passenger vehicle are calculated numerically. The solar radiation and body heat are additional source term of energy equation, the influence of passenger and solar radiation on airflow...
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