Energy residual changing between two values -- CFD Online Discussion Forums

November 2, 2017, 09:34	Energy residual changing between two values	#1
Foxhunter New Member Join Date: Oct 2017 Posts: 26 Rep Power: 8	Hello all, I am simulating combustion in a flare. For this I am using the transient solver, the solution has a hard time converging in the steady state solver. But here is the problem: My energy residual keeps switching between two values. If I change the timestep the values change, but it still switches between two values(so for a timestep of 1e-5s it switches between 1,311e-4 to 3,843e-4 and with a timestep of 1e-6 it switches between 1,423e-5 to 4,562e-5). If I reduce the residual far enough (0,5 or lower) it gets stuck on one value. How do I solve this? Thanks!

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