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-   -   High Weissenberg Number Problem (http://www.cfd-online.com/Forums/fluent/37173-high-weissenberg-number-problem.html)

Eureka July 6, 2005 12:33

High Weissenberg Number Problem
 
hi all i have simulated a rotational rheometer (Mooney viscometer) with Fluent but in the output the torque is 30% different from the sperimental data, the model for the viscosity is the non-Newtonian power law the parameter obtained from capillary rheometer. The shear rate is too high at the edge of the rotor, then the Weissenberg number is too high and i think this is the problem... what you think about? Fluent give bad data when Weissenberg number is high?

sorry for my bad english.


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