Dear all,
I want to simulate helical pipe by using periodic boundary condition due to less computational efforts. I only simulate one turn. Flow is laminar, fluid is water, pipe diameter 26 mm and spiral diameter 139.8 mm. Mass flow rate is 0.034 kg/s. But, I find distribution pressure is bad. (see Figure Periodic Trial)
I find a paper of "torisonal and curvature effect on fluid flow in a helical annulus". They use finite difference and based on projection algorithm (see figure 1 period and helix). They also use periodic boundary condition. But, I dont know to use projection algorithm in fluent.
Do you have any suggestion?
Thank you
Best regards
In Fluent you can use the projection method setting the NITA (FSM) formulation:
http://www.afs.enea.it/project/neptunius/docs/fluent/html/th/node375.htm
Dear Filippo Maria Denaro
Thank you for your help.
Maybe I misunderstand about the paper of "torsional and curvature effect on fluid flow in a helical annulus". my case is steady state. My problem is I can not use periodic boundary condition in helical pipe. Maybe there is some errors vector or coordinate system. I find that in periodic boundary condition the input is in Cartesian coordinate. In my case I need helical coordinate so I can input velocity vector correctly. in My pressure field is not so good. I thought that the solution was by using projection method.
Do you have any suggestion?
Thank you for your help.
Teguh
Dear Julian
Thank you for the link. I see it seems similar with my problem. Unfortunately I am using ANSYS Fluent 17. I am still trying to find the similar concept of general extrusion operators in Ansys FLUENT 17.
Thank you
Best regards
Teguh
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