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【答案】应助回帖
★ ★ 感谢参与,应助指数 +1 xiegangmai: 金币+1, 谢谢参与! 2012-03-21 17:32:42 manariel: 金币+1, 感谢帮助,不过有些笼统了 2012-03-22 16:53:02
Specification of Turbulence Quantities Using Profiles
If it is important to accurately represent a boundary layer or fully-developed turbulent
ow at the inlet, you should ideally set the turbulence quantities by creating a boundary
prole le (see Section 7.26: Boundary Proles) from experimental data or empirical
formulas. If you have an analytical description of the prole, rather than data points,
you can either use this analytical description to create a boundary prole le, or create a
user-dened function to provide the inlet boundary information. (See the separate UDF
Manual for information on user-dened functions.)
Once you have created the prole function, you can use it as described below:
Spalart-Allmaras model: Choose Turbulent Viscosity or Turbulent Viscosity Ratio in
the Turbulence Specication Method drop-down list and select the appropriate prole
name in the drop-down list next to Turbulent Viscosity or Turbulent Viscosity Ratio.
FLUENT computes the boundary value for the modied turbulent viscosity, ~ , by
combining t= with the appropriate values of density and molecular viscosity.
k- models: Choose K and Epsilon in the Turbulence Specication Method drop-down
list and select the appropriate prole names in the drop-down lists next to Turb.
Kinetic Energy and Turb. Dissipation Rate.
k-! models: Choose K and Omega in the Turbulence Specication Method drop-down
list and select the appropriate prole names in the drop-down lists next to Turb.
Kinetic Energy and Spec. Dissipation Rate.
Reynolds stress model: Choose K and Epsilon in the Turbulence Specication Method
drop-down list and select the appropriate prole names in the drop-down lists
next to Turb. Kinetic Energy and Turb. Dissipation Rate. Choose Reynolds-Stress
Components in the Reynolds-Stress Specication Method drop-down list and select
the appropriate prole name in the drop-down list next to each of the individual
Reynolds-stress components.
这是FLUENT用户指南上关于湍流参数设定的指导,直接拷的,应该不用给你翻译了吧 |
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