<HTML><BODY>Hi, Neks!<br><br>I have a question about setting Reynolds number and using variable properties in uservp (density, viscousity and etc.).<br><br>I want to solve an dimensionless equation (1D case, for example):<br>rho*Cp*(dT/dt + ux*(dT/dx))=(1/Pe)*d(k(dT/dx))/dx,<br><br>where rho*Cp I set in uservp (utrans for ifield = 2) and it's variable,<br>k I set in uservp (udiff for ifield = 2) and it's variable.<br><br>According to the documentation for using uservp I must use "variableProperties = yes" in .par file, and for the Peclet number I must use "conductivity = -3536.69" (minus for Pe), but I was looking at the code and noticed that both of "uservp" and "conductivity" use vtrans array. Does it mean that in case of variable properties I could solve only<br><br>rho*Cp*(dT/dt + ux*(dT/dx))=d(k(dT/dx))/dx,<br><br>without my Peclet number and I sould to include it in uservp in k, for example?<br><br>Best regards,<br>John.<br></BODY></HTML>