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November 25, 2016, 01:35 |
Fluent Simulation of gas mixture in the pipe
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#1 |
New Member
Rauf
Join Date: Jun 2013
Location: Indonesia
Posts: 4
Rep Power: 13 |
hello everyone.
i am doing some simulation of fluid flow in the 90 degree bending pipe. i want to know relation of velocity inlet variation, compressibility, and pressure drop for mixtures gas flow. this is my setup: 1. fluid is natural gas (11 species of mixtures gas), modeled as incompressible-ideal-gas. i am considering to use ideal-gas model later. or any suggestion?. 2. velocity will be varied from 0.5 m/s until 180 m/s (velocity, mach number, and Reynolds number attached below). 3. pressure of the system is 0.3 atm(gauge).and environment pressure 1 atm. 4. i use k-w SST turbulent model (my reason is because flow will be always in entrance region, so k-e is not applicable) CMIIW. my questions are: 1. the fluid is modeled as incompressible-ideal-gas. i am considering to use ideal-gas model later. or any suggestion sir?. 2. based on march number, it will be incompressible and compressible flow can i use pressure based ??. or switch to density based when mach > 0.3 ? 3. where to input the pressure of the system ?. i tried to input inlet pressure gauge 0.3 atm but the result is similar with inlet pressure gauge 0 atm. 4. in some compressible flow simulation tutorial, i saw that they using inviscid model (because of very high Reynolds number). for my model, which one will be better, stay using turbulent model or switch to inviscid ?. 5. i open any suggestion . thank you for advice. regards, free.man |
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November 26, 2016, 01:59 |
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#2 |
New Member
Rauf
Join Date: Jun 2013
Location: Indonesia
Posts: 4
Rep Power: 13 |
any suggestion??
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Tags |
mach number, mixture of gases, pipe flow, pressure based solver |
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