relation between mesh and mapping
 

hi;). this is my first cfd project. I am trying to do a one way fsi(cfx and structural, importing pressure). when i increased the fineness of structural mesh the mapping of pressure in structural decreased by about 10%(fluid domain was meshed in icem). Is it obvious or there is some other problem. one more thing:confused:. please tell me more about ggi mapping and how to use it. thanx.