[Nithyanandham]

Hi,
Herewith I added computational domain (ref fig 1) of my work. Kindly help me find answers for these questions.
1. Why this nozzle shadow wall occurs?. Any possibilites to remove this? if no means any problem (Deviation in results) occurs with this ! (ref fig 2)
2. Mesh check failed in setup. How to rectify this (ref fig 3). How to fix adjacent cell zones?
3. For Nozzle, inlet is specified as velocity inlet boundary condiitons. Outlet has to specified or not for my work (ref fig 1). If it is to specified what should i go with?
4. Floating point exception error occurs while running the case. Why this occurs and how to fix?