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- - **Use of 1 equation turbulence model in CFX 4.3
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Use of 1 equation turbulence model in CFX 4.3
Hi,
I would like to implement an one-equation eddy viscosity model in CFX 4.3. That is, I want to perform a large eddy simulation, in which the eddy viscosity is approximated with the use of a transport equation for k (turbulent kinetic energy). The eddy viscosity becomes: mu<SUB>T</SUB> = rho C<SUB>s</SUB> k<SUP>0.5</SUP> delta where C<SUB>s</SUB> is a model constant (=0.12) and delta is the filter size (i.e. representative size of the gridcell). Unfortunately in CFX one can only pick a turbulence model with 2 equations or more (like k-epsilon, k-omega or RSM). My experience with the use of User Fortran in differential equations is zero. Can anyone help me on this? Thanks alot! Kind regards, Niels Deen |

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