fluent各个边界条件（Fluent each boundary condition）.docVIP

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fluent各个边界条件（Fluent each boundary condition）.doc

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fluent各个边界条件（Fluent each boundary condition）

fluent各个边界条件（Fluent each boundary condition） The scope of boundary conditions of the fluent variety of 2009-04-29 17:36:26| classification: CFD professional knowledge | Tags: | name and subscription. The scope of FLUENT in various boundary conditions The speed of entrance boundary condition is used to define the boundary of the entrance flow velocity and scalar. Entrance pressure boundary condition is used to define the boundary of the entrance flow total pressure and other scalar. Mass flow entrance boundary conditions: known for the entrance of mass flow rate of compressible flow. In incompressible flows do not need to specify the entrance of the mass flow, because when the density is constant, the speed of entrance boundary conditions will determine the quality of flow conditions. Pressure outlet boundary condition: for static definition of the export flows (in return also includes other scalar). When backflow when using pressure outlet boundary condition instead of the quality of export conditions often have a better convergence rate. The pressure of the far field boundary conditions for simulating infinite free compressible fluid flow, the freestream Mach number of the flow and static conditions are known. This type of boundary only for compressible flow. The quality of outlet boundary conditions: for before solving the flow problems with velocity and pressure flow simulation export also unknown. In the flow of exports is fully developed when the condition is suitable, it is because of all flow variables method of outflow boundary assumption out outside the pressure gradient to zero. Not suitable for compressible flow. The air inlet boundary conditions is used to simulate the loss coefficient, the specified flow direction and the surrounding environment (entrance) air inlet total pressure and total temperature. The air inlet fan boundary conditions used to simulate the external air inlet fan, which has the specified pressure, flow direction and jump around (imp