I am injecting natural methane gas through six nozzles, variable mass flow boundary is implemented. However, at a lower mass flow rate (0.18 g.sec) the result was good but at this mass flow rate (0.43 g/s) the recycling requested by pressure iteration is coming in the log file. This will result in smaller time step and finally, simulation will be stopped. I don't know why this pressure recycle request is coming.
Any idea will be very helpful. This work is to be implemented in natural gas direct injection engine.
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