No gas flow through the inlet, Ansys Forte

- December 28, 2024 at 9:41 am
  
  sharanvenkatesh.211me344
  Subscriber
  
  Hey guys!
  I have been simulating the suction and compression stroke of a 4-stroke hydrogen engine using a modified version of the geometry used in ANSYS 'siengine_gdi_tutorial'.
  The modification is done to create an inlet for hydrogen at the injector location. The boundary condition given to the inlet is simple: constant pressure of 50 bar. No errors show up throughout the simulation. But for some reason, there is no flow through the hydrogen inlet. I try to change the boundary condition to 'mass flow rate, time-varying,' and it shows the error shown below, no matter how fine I make the mesh around the inlet.
  I would appreciate any assistance in this regard!
- December 31, 2024 at 6:26 pm
  
  jcooper
  Ansys Employee
  
  Hi:
  The shape of your inlet hole suggests there may only be one cell there as suggested by the error message:
  Refining the mesh in this area will probably resolve the issue.
  Regards,
  Judy