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November 20, 2012, 06:03 |
thermal conductivity expression
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#1 |
Member
Thomas Hoffmann
Join Date: Oct 2012
Posts: 67
Rep Power: 13 |
hi all.
I would like to add an expression for thermal conductivity k=-0.000837*T^2-0.030641*T+0.147212 But I get the following error: ' Bad expression value '-0.000837*T[K^2]^2-0.030641*T[K]+0.147212' detected in parameter 'Thermal Conductivity' in object '/LIBRARY/MATERIAL:Ice cream/PROPERTIES/THERMAL CONDUCTIVITY'. CEL error: Error at position 12. Units ([K^2]) are associated with a term that is not dimensionless. ' I also tried to write it like this: k=-0.000837*T[K^2]^2-0.030641*T[K]+0.147212 Does anybody know how to use the expressions in cfx? |
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