[elina]

Hi
When I am giving some mesh where there is a solid part (Sphere) and a an enclosure which is considered to be fluid (Rectangular Box) and while meshing I have to mesh the surface between the solid and fluid as fine meshing or have to give some inflation layer , but when I go for that option its asking for boundary which I am not able to give any boundary...I am able to select the named selection of Inlet but then its asking for boundary ..which I cant give in any way..and I just want at the inlet region little fine meshing...since the flow starts from there....and also on the surface of the solid where the fluid flows since its a heat transfer problem so have to see the heat transfer...

Kindly have a look at my geometry and tell me ....I hope you can understand better...I have to mesh the sphere in such a way that I get very less number of elements and the fluid zone as the hexa mesh and have to see the outlet temperature for different number of elements in fluid zone and solid zone....
Kindly help me ....in these two problems....
Thanks in advance