Meshing complex geometry using hexa with single blocking
 

hi, well i am a begineer in ICEM. i have to mesh the geometry of nozzle and substrate assembly using ICEM CFD. i need to mesh it using hexa. is it possible to mesh it using a single block then splitting. if i initialize different block for different parts then i incur problemn in merging vertices and i am doubtful weather the blocks are connected.

please suggest.:confused: