From the earlier posted film thickness graph, the film is 1mm thick just at the inlet but it decreases sharply. It fluctuates between 0.8 to 0.2 mm for a little distance and for the rest of the length thickness is less than 0.2 mm. So if I select the first layer thickness 0.2mm, for the maximum distance the film would be within the first layer height(first layer cell height is larger than film thickness). Do I still need to increase the first layer height by more than 0.2mm to hold the film?
Based on the posted images and results, which changes I should make to skip these issues?
Here is the image:
Here is how velocity changes along z-direction:
Regards Anadi