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1、传热模型,能量方程,Inclusion of Pressure Work and Kinetic Energy Terms,The Equation includes pressure work and kinetic energy terms which are often negligible in incompressible flows. For this reason, the pressure-based solver by default does not include the pressure work or kinetic energy when you are solvi
2、ng incompressible flow. If you wish to include these terms, use the define/models/energy? text command to turn them on. Pressure work and kinetic energy are always accounted for when you are modeling compressible flow or using the density-based solver.,Inclusion of the Viscous Dissipation,When the p
3、ressure-based solver is used, FLUENTs default form of the energy equation does not include them (because viscous heating is often negligible). Viscous heating will be important when the Brinkman number, Br, approaches or exceeds unity, where,Inclusion of the Species Diffusion Term,Energy Sources,Rea
4、ction Radiation Interphase Energy Sources,Diffusion at Inlets,The net transport of energy at inlets consists of both the convection and diffusion components In some cases, you may wish to specify the net inlet transport of energy rather than the inlet temperature. If you are using the pressure-based
5、 solver, you can do this by disabling inlet energy diffusion. By default, FLUENT includes the diffusion flux of energy at inlets. To turn off inlet diffusion, use the define/models/energy? text command.,非预混燃烧PDF模型的能量方程,固体能量方程,各向异性导热：,用户输入,Heat Transfer in Two Separated Fluid Regions,You should not u
6、se outflow boundary conditions in either fluid. You can establish separate fluid properties by selecting a different fluid material for each zone. (For species calculations, however, you can only select a single mixture material for the entire domain.),求解策略,Under-Relaxation of the Energy Equation Un
7、der-Relaxation of Temperature When the Enthalpy Equation is Solved Disabling the Species Diffusion Term Step-by-Step Solutions,后处理,Total Temperature Enthalpy 可压流 不可压 total enthalpy Total Enthalpy Deviation Total Energy,自然对流,Define - Models - Energy Define - Operating Conditions Enable the Gravity option,Operating Density,When the Boussinesq approximation is not used, body-force term in the momentum equations ： This form of the body-force term follows from the redefinition of pressure in FLUENT as,Boussinesq Model,适用条件：,求解策略,Shell Conduction,