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Boundary conditions for an axisymmetric round jet |
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September 3, 2010, 10:26 |
Boundary conditions for an axisymmetric round jet
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mary
Join Date: Jun 2010
Posts: 3
Rep Power: 15 |
hello all , i am new to the use of Fluent so am running a basic case of an axisymmetric round jet. I am getting comparable results for velocity with the literature but the turbulent kinetic energy graphs shows a starneg trend. It first drops for a small distance and then it increases but the increases is very slow. I am worried that i might have put in wrong BC
so my velocity at inlet is 50m/s, here am a bit unsure that what conditions tow give for turbulence i mean what field to choose so i chose turbulence intensity & hydraulic diameter and gave an estimated quantity of 5% the rest of the region on velocity inlet side is a co flow region with a vel of 0.2m/s pressure is 0 gauge pressure and no slip walls... can somebody please suggest as i know it wouldnt be a pb for an expert user. Thanks |
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