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High Pressure Gradient and Velocities

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Old   February 4, 2018, 16:09
Default High Pressure Gradient and Velocities
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Hells Blade
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Hi

Does anyone have experience dealing with high pressure gradient and velocity gradients.

Attached is my contour results- velocity and mach no

I have a 90 mm dia by 300 height cylindrical air blower as inlet at the top

The air is blown through a 300*300 mm domain wall thickness 2 mm

These are two seperate bodies (formed one part - no boolean )

I have ultrasonics velocities at my oultet when the pressure at inlet is 6 bar

Solver Settings Coupled
K epsilon realizable
ideal gas - material

Ultrasonic speeds at bar pressure is it possible ?

Or do i need to select a finer mesh grip and different solver settings for higher pressure gradients
Attached Images
File Type: jpg vel.jpg (88.2 KB, 11 views)
File Type: jpg contour mach no.JPG (49.6 KB, 10 views)

Last edited by hellsblade.91; February 4, 2018 at 18:33.
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mesh 3d, pressure and velocity, solver convergence, turbulence analysis

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