Trailing Vortex Generation

Adri Das · June 30, 2023, 08:54

I try to find several sources about how to generate a trailing vortex in a propeller. But couldn't find one. It would be really helpful if anyone describes to me how to generate a trailing vortex in a propeller in star ccm+.

PS: My propeller is 4-bladed. The flow is steady and I'm using RANS and K-e turbulence model.

Aeronautics El. K. · July 8, 2023, 06:54

Can you post a figure showing what it is that you want to achieve?

Adri Das · July 8, 2023, 09:53

This spiral trailing vortices is what I want to do.

cwl · July 8, 2023, 16:51

Quote:

Originally Posted by Adri Das

This spiral trailing vortices is what I want to do.

This looks like a result from transient simulation, while your one is steady.

Adri Das · July 8, 2023, 17:51

What's the general procedure to obtain this spiral vortices?

SESP · July 10, 2023, 02:42

For the image you have shown as reference, the keyword here is volume rendering. Then any appropriate fluid property, in the example vorticity was used which is a good choice for visualizing vortex structures. Q-Criterion might be another one to look at.

June 30, 2023, 08:54	Trailing Vortex Generation	#1
Adri Das New Member Adri Join Date: Jun 2023 Posts: 3 Rep Power: 2	I try to find several sources about how to generate a trailing vortex in a propeller. But couldn't find one. It would be really helpful if anyone describes to me how to generate a trailing vortex in a propeller in star ccm+. PS: My propeller is 4-bladed. The flow is steady and I'm using RANS and K-e turbulence model.

July 8, 2023, 06:54		#2
Aeronautics El. K. Senior Member Lefteris Join Date: Oct 2011 Location: UK Posts: 337 Rep Power: 15	Can you post a figure showing what it is that you want to achieve? __________________ Lefteris

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July 8, 2023, 17:51		#5
Adri Das New Member Adri Join Date: Jun 2023 Posts: 3 Rep Power: 2	What's the general procedure to obtain this spiral vortices?

July 10, 2023, 02:42		#6
SESP New Member Join Date: Mar 2011 Posts: 20 Rep Power: 16	For the image you have shown as reference, the keyword here is volume rendering. Then any appropriate fluid property, in the example vorticity was used which is a good choice for visualizing vortex structures. Q-Criterion might be another one to look at.