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August 5, 2011, 06:59 |
reactingFoam temperature drops below bc
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#1 |
New Member
Join Date: Mar 2010
Posts: 25
Rep Power: 16 |
Hi foamers,
I try to simulate (OF-1.7) a oxygen-steam mixture in a cylindrical geometry with two coaxial inlets. But when I run the case the temperature drops below the initial bc (mixed 385K <-> inlets 403K/638K). Thats bad because at this conditions (p=4.3MPa) the steam condensed. To eliminate this case I clearly increase the tmperatures at the inlets. But in result the temperature again drops below my default values. BC: (in,wall,out) T: fixedValue, zeroGradient, inletOutlet U: fixedValue/cylindricalInletVelocity, fixedValue, fluxCorrectedVelocity (prevent backflow) p: zeroGradient, zeroGradient, totalPressure chemistry and turbulence reaction is off Can anyone help me? With best regards pit |
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