|November 15, 2014, 14:46||
Air density variation
Join Date: Apr 2009
Posts: 148Rep Power: 9
hi dear friends.
i am modeling an air intercooler that cool's down compressed air.so air density changes(increases) while passing throw the intercooler and i need to monitor density and temperature variation.
the problem is that i cant define air proper density at inlet BC.
the air pressure is 2 bars and the temperature is equal to 146 deg of centigrade and a mas flow of 0.26kg/sec at inlet.
how can i set the pressure and mass flow together at inlet Bc?how should i chenge the material properties to have the right air density at pressure and temperature variation?
the velocity is about 3 to 12 m/sec and is far far away from speed of sound.i dont know if i should model a compressible flow?i know air can be assumes as ideal gas in my situation but how can i define the right density at inlet and monitor its variation throw the intercooler?
|November 16, 2014, 05:13||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 13,175Rep Power: 102
You will need to use the total energy model so the temperature can affect the density. (Just read the doco and it suggests a Thermal Energy model would also do it but I thought that was a constant density model)
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