September 4, 2022 at 7:47 am164170007Subscriber
I am planning to simulate flow of water vapor inside the reactor at p_actual(absolute)=1bar and p_actual=10bar, to see the effect of pressure.
In ANSYS p_real=p_operating+p_gauge (correct me if I am wrong).
I tried two different cases.
CASE I = P_operating=10bar, p_outlet=0bar, mass flow inlet=0.5kg/s, T_inlet=673K and density =incompressible ideal gas,
CASE II=P_operating=1bar, p_outlet=9bar, mass flow inlet=0.5kg/s, T_inlet=673K and density =incompressible ideal gas,
My question is that why I am getting two different results because real pressure =10bar only.
Is it because density is calculated based on the operating pressure, and if if its true then how do I know that which CASE (either I or II) will give me correct results?
Thanks in advance.
September 5, 2022 at 9:29 amRobAnsys Employee
Can you post the results and inlet panel? Read the definition for incompressible ideal gas, pressure shouldn't have any effect on density.
September 6, 2022 at 9:38 am
September 6, 2022 at 12:50 pmRobAnsys Employee
Gauge pressure is the same (within a couple of Pascals) between the two cases : 137079.3 Pa v 137077.5 Pa
September 7, 2022 at 8:59 am164170007Subscriber
Hello Rob, I agree that but my question is which P_inlet (absolute) I have to consider as a final result?
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