Fluid is not entering rotating domain through INTERFACE.

cheap_person · October 2, 2024, 00:36

Hello and good morning!
Hope you are doing fine.

Context
I'm performing a cfd periodic simulation of a propeller blade. In model there is a dome shaped rotating domain and cylindrical static domain.

I've turned on streamline (starting from INLET, forward direction).

In the following picture you can clearly see:
Image click here

Problem: The problem is fluid is slipping over the wall of dome or rotating domain. however, the wall is subjected as INTERFACE not as WALL.
Hence, it is not entering the rotating domain.

I'll be very thankful for your responds.

Sending positive vibes!!!
cheap person

Gert-Jan · October 2, 2024, 09:45

Not sure, but looking at your figure, I only see periodic interfaces that connect front and back surface.
But where is your sliding interface between rotating and stationary domain. You should define that as well. And if not, you have the risk that the interfaces are made Walls by default.

Also, you are using Fluent. So I think you will get more help in the Fluent Forum.
Alternatively, use CFX, which I can highly recommend for rotating applications.

Note: Do not create external links to share pictures. You can upload a picture by "Going Advanced".

ghorrocks · October 2, 2024, 17:54

Assuming this model is done in CFX - then please upload your output file.

October 2, 2024, 00:36	Fluid is not entering rotating domain through INTERFACE.	#1
cheap_person New Member cheap person Join Date: Mar 2024 Location: New Delhi, India Posts: 19 Rep Power: 2	Hello and good morning! Hope you are doing fine. Context I'm performing a cfd periodic simulation of a propeller blade. In model there is a dome shaped rotating domain and cylindrical static domain. I've turned on streamline (starting from INLET, forward direction). In the following picture you can clearly see: Image click here Problem: The problem is fluid is slipping over the wall of dome or rotating domain. however, the wall is subjected as INTERFACE not as WALL. Hence, it is not entering the rotating domain. I'll be very thankful for your responds. Sending positive vibes!!! cheap person

October 2, 2024, 17:54		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,830 Rep Power: 144	Assuming this model is done in CFX - then please upload your output file. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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October 2, 2024, 09:45		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,903 Rep Power: 28	Not sure, but looking at your figure, I only see periodic interfaces that connect front and back surface. But where is your sliding interface between rotating and stationary domain. You should define that as well. And if not, you have the risk that the interfaces are made Walls by default. Also, you are using Fluent. So I think you will get more help in the Fluent Forum. Alternatively, use CFX, which I can highly recommend for rotating applications. Note: Do not create external links to share pictures. You can upload a picture by "Going Advanced".