Reply To: Spark plug location error

[Ren]

Assuming the location of the spark location has been double-checked, this error that complains the spark location not being inside a cylinder/sub-chamber region must be caused by incorrect region IDs in the mesh. What typically happens is that the cylinder/sub-chamber region containing the spark plug is not given the correct region ID and initial conditions due to some topology issues in the surface mesh. The valves not being tightly seated is the most frequently encountered cause for such an error. To confirm, you can do a test run by turning off the spark ignition model and selecting region ID as a spatially-resolved output variable. Turning off the spark ignition model will allow this error message to be bypassed and hence allow the initial spatially-resolved solution to be saved. You can then check the region IDs and initial conditions in the initial solution using Ensight. If the valves indeed contain non-trivial gaps in the surface mesh, you can use the "Check Valves" utility within the "Utility" ribbon group to seat the valves to a specified tolerance.