Users can supply their own function to calculate thermoplastic viscosity in 3D Flow analyses.
Using a new bidirectional C API, the 3D Flow solver (mhb3d) can call a user function to compute the melt viscosity as a function of temperature, shear rate and pressure. The user function can call selected functions in mhb3d to get further information about the mesh and solver parameters, if these affect the user's viscosity computation.