- #1
Royni Abud
- 1
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I simulated an incompressible turbulent flow across a tube. I managed to solve it using OpenFoam and the results seem to be right. However, I noted some vacuum pressure after the sudden expansion but can't figure out why the pressure decreases and then increases again. According to Bernoulli's equation, the pressure should increase as the velocity decrease. Could someone explain me why? Below are some details.
inlet velocity = 10 m/s
inlet pressure = 0 (gauge)
turbulent model used k-epsilon
kinematic viscosity = 1*10^-5 m2/s
Here are pressure field and velocity field respectively:
inlet velocity = 10 m/s
inlet pressure = 0 (gauge)
turbulent model used k-epsilon
kinematic viscosity = 1*10^-5 m2/s
Here are pressure field and velocity field respectively: