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Convergence problem on the energy equation

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Old   November 1, 2015, 12:28
Default Convergence problem on the energy equation
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I am working on HVAC.A 3d room with 3 inlet window and 3 outlet window in opposite direction.Inlet velocity is 0.1m/s. outlet is pressure bounday condition.
The turbulence model used is K EPSILON. Heat flux from floor is 10w/m2.
when i solve the (flow & turbulence )and energy equation separately the solution is converged.But when i solve the equation together the energy equation is not converging. It shows the error Divergence detected in the AMG solver: temperature. Error object :#f. Pressure based solver, gravity is switched off..
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