A tecplot problem
 

Hi All My model is a pipe flow, and the viscosity of fluid is variable in the flow field. The iteration had been processed in Fluent. Now I want to show the distribution of fluid viscosity, if which is larger than a constant value. At same time, I also want to show transparently the outline of the pipe wall. But I don't know how to show this two effects at one time. Pls someone give me any advices.