**** Entered By: rlange @ 10/27/2006 02:08 PM ****
Q. I am doing a CFX analysis with adaptive time step control activated. I provided CEL table input to control Pressure vs. time from t=0 to the specified end time of the case. Why does CFX give me this error message: Failure to calculate variable using Expression Language?
A. With adaptive time step control and other cases, the last time step chosen by CFX might take the case beyond the specified end time. If that happens and the user did not specify Extend Max for an interpolation function (table) that uses time as a variable, then the solver produced the above error because it cannot evaluate the pressure at the end time, which would be larger then the user specified time. This behavior is well documented.
Therefore it is a good idea to extend the time range of the CEL interpolation function beyond the specified end time or turn ON Extend Min and Extend Max of the interpolation function.
**** Entered By: rlange @ 10/27/2006 02:08 PM **** Q. I am doing a CFX analysis with adaptive time step control activated. I provided CEL table input to control Pressure vs. time from t=0 to the specified end time of the case. Why does CFX give me this error message: Failure to calculate variable using Expression Language? A. With adaptive time step control and other cases, the last time step chosen by CFX might take the case beyond the specified end time. If that happens and the user did not specify Extend Max for an interpolation function (table) that uses time as a variable, then the solver produced the above error because it cannot evaluate the pressure at the end time, which would be larger then the user specified time. This behavior is well documented. Therefore it is a good idea to extend the time range of the CEL interpolation function beyond the specified end time or turn ON Extend Min and Extend Max of the interpolation function. 

