Learning Forum

[Andrea Heras]

Hello,  

 

I’m running a 2D simulation of a tube with two faces, each having a diameter of 15 mm.

On one side, there’s a volume flow rate of 6×10−4 m^3/s.

On the other side, there’s a pressure outlet of 10 Pa.

However, when I calculate the area, the order of magnitude is significantly different from what I expected. The area should be 1.5×10−4 m^2, but the result from ANSYS is 1.5×10−2 m^2. Can anyone explain why there’s such a large discrepancy?

Additionally, when I applied a scale factor to correct the area, the outlet pressure automatically changed. Instead of remaining at 10 Pa, it increased to 24 Pa. Why did this happen?

 

Thanks 

[Rob]

Please post images. 

[Andrea Heras]

Hello, 

My simulation involves a cylindrical body with a protrusion on the underside (valve). However, when I calculate the pressure face area using ANSYS, the result doesn't make sense. 

 

 

Thanks 

[Rob]

OK, so 15mm height, with an assumed depth of 1m as it's 2d: that looks correct. 

[Andrea Heras]

Is there any way to indicate that it is a 15 mm diameter cylinder and that it is not 1 m deep?  

[Rob]

Other than a 3d model?