2D Fan Analysis in CFX ...HELP Required!!
Hi all,
I am working NASA rotor 67 blade. But instead of doing 3D i have started my work with 2D. When i import 2D mesh from ICEM to CFX it automatically converts in 3D by taking unit width. There are three options available for Inlet and outlet boundary conditions: 1. I put inlet: Total temp and Total Pressure Outlet: static pressure 2. I put inlet: Mass flow rate Outlet: static pressure and static temp 3. I put inlet: Total temp and Total Pressure Outlet: Mass flow rate I choose 1 with total pressure and tem at inlet and static pressure outlet. I fixed whole domain stationary and select my blade rotating with speed 16046 RPM.If i take domain rotation it doesn't run and gave error right away. I chose periodic conditions but periodicity translation because if i took rotational it doesn't run and gave error right away. As i told u CFX automatically covert 2D air foil in 3D but with small thicknes. So i took top and bottom as Hub and shroud but with symmetry boundry conditions. I tried Wall but i was not run. I choose Material :Air ideal Gas. Heat Transfer Model : Total Energy Turbulance Model: SST It runs. But result are not reasonable as i am not getting any temperature difference. T01= 288 K P01 = 101352.0 Pa I am getting T02: 288.17 K P02 = 110235.20 Pa But i havent got good result. All the time my inlet and outlet total temperature is same in all three cases. Why is that? I solved CFX and Fluent tutorial for 3D blade my conditions are almost same.Kindly suggest me what shud i do. Thank you and Regards, |
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