How to implement swirling phenomenon to model FAN

January 9, 2006, 00:40

HI I tried to use EFD.Lab to model a DC Axial Fan. How do I implement swirling phenomenon on the DC Axial fan?

January 9, 2006, 04:37

Buy Flotherm.

January 9, 2006, 07:41

Dear OpticDesigner:

Swirl flows out of a fan can be implemented by setting tangential face velocity boundary conditions on the lea side of your fan object.

See the example I created at the following link: http://CFD.TITANAlgorithms.com

The fan model demonstrated on this page shows that a uniform swirl that can be created with just a small dedicated setup of control surfaces to create the swirl.

If you are interested in the model, I would be happy to provide it for you.

Kind Regards,

DSS www.TITANAlgorithms.com

January 9, 2006, 08:16

Wow, nice response!

The swirl is a function of the operating point of the fan, at high flow rates the proportion of swirl to axial velocity is reduced. This is all related to the fan efficiency curve.

January 9, 2006, 00:40	How to implement swirling phenomenon to model FAN	#1
OPticdesigner Guest Posts: n/a	HI I tried to use EFD.Lab to model a DC Axial Fan. How do I implement swirling phenomenon on the DC Axial fan?

January 9, 2006, 04:37	Re: How to implement swirling phenomenon to model	#2
Harry Fulmer Guest Posts: n/a	Buy Flotherm.

January 9, 2006, 07:41	Re: How to implement swirling phenomenon to model	#3
TITAN Algorithms, Staff Guest Posts: n/a	Dear OpticDesigner: Swirl flows out of a fan can be implemented by setting tangential face velocity boundary conditions on the lea side of your fan object. See the example I created at the following link: http://CFD.TITANAlgorithms.com The fan model demonstrated on this page shows that a uniform swirl that can be created with just a small dedicated setup of control surfaces to create the swirl. If you are interested in the model, I would be happy to provide it for you. Kind Regards, DSS www.TITANAlgorithms.com

January 9, 2006, 08:16	Re: How to implement swirling phenomenon to model	#4
Harry Fulmer Guest Posts: n/a	Wow, nice response! The swirl is a function of the operating point of the fan, at high flow rates the proportion of swirl to axial velocity is reduced. This is all related to the fan efficiency curve.

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