I want to confirm the performance of the axial flow fan.

Sanghyun - PARK · October 14, 2013, 20:57

I want to confirm the performance of the axial flow fan.

CFD calculation reference conditions of the axial fan.

Air, 20 [˚c] - 1.2 [kg/m^3]
Mass Flow = 16 [kg/s]
Static Pressure = 540 [Pa]
RPM = 1180 rpm = 123.569311 [rad/s]

------------Ansys---------------
In the case of Ansys Cfx program,

Inlet Lid = Total pressure - 0 [pa]
Outlet Lid = Mass Flow - 16 [kg/s]
------------Ansys---------------

------------Floworks---------------
However, in the case of a program of Floworks,

Inlet Lid = Mass Flow - 16 [kg/s]
Out Lid = Static Pressure - 540 [Pa]
------------Floworks---------------

Ansys program, satisfied with the results.

Floworks program are dissatisfied with the result.

Floworks conditions set, Is my mistake?

To answer please.

Boris_M · October 29, 2013, 04:22

I'm not quite sure I understood you correctly.
Is that the fan data in the engineering database? I hope there is more data of the mass flow rate for the fan to have a real fan curve that is depending on the pressure difference between the inlet and outlet of the fan. At the moment you have 16kg/s constant with some swirl, at least from what you wrote.

Also are you sure it is 540Pa? Is this a vacuum pump or a default fan such as for electronics cooling?

Other than that I cannot help you as there is too little information on what it not working right or what the error is that you see.

Regards,
Boris

October 14, 2013, 20:57	I want to confirm the performance of the axial flow fan.	#1
Sanghyun - PARK New Member Korean Pie Join Date: Nov 2012 Posts: 6 Rep Power: 14	I want to confirm the performance of the axial flow fan. CFD calculation reference conditions of the axial fan. Air, 20 [˚c] - 1.2 [kg/m^3] Mass Flow = 16 [kg/s] Static Pressure = 540 [Pa] RPM = 1180 rpm = 123.569311 [rad/s] ------------Ansys--------------- In the case of Ansys Cfx program, Inlet Lid = Total pressure - 0 [pa] Outlet Lid = Mass Flow - 16 [kg/s] ------------Ansys--------------- ------------Floworks--------------- However, in the case of a program of Floworks, Inlet Lid = Mass Flow - 16 [kg/s] Out Lid = Static Pressure - 540 [Pa] ------------Floworks--------------- Ansys program, satisfied with the results. Floworks program are dissatisfied with the result. Floworks conditions set, Is my mistake? To answer please.

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October 29, 2013, 04:22		#2
Boris_M Disabled Join Date: Jul 2009 Posts: 616 Rep Power: 24	I'm not quite sure I understood you correctly. Is that the fan data in the engineering database? I hope there is more data of the mass flow rate for the fan to have a real fan curve that is depending on the pressure difference between the inlet and outlet of the fan. At the moment you have 16kg/s constant with some swirl, at least from what you wrote. Also are you sure it is 540Pa? Is this a vacuum pump or a default fan such as for electronics cooling? Other than that I cannot help you as there is too little information on what it not working right or what the error is that you see. Regards, Boris