Pulsating Flow in a Circular Pipe

Shivam Sinha · November 13, 2014, 01:57

Hi,

I tried simulating the velocity profile for pulsating flow in a cylindrical pipe.
But my results don't quite match with the results published in the paper "Development Length of sinusoidally pulsating laminar pipe flows" by Franz Durst, even though I have used the same flow conditions.

I've attached my OpenFOAM code and some graphs comparing my results with those published in the paper. (In the graph, the brown lines indicate the fully developed velocity profile from my simulation results while the black dots represent the results from the paper)

Probably, there is something wrong with the finite volume schemes that I have used. Please have a look at the code I have attached.

alexeym · November 14, 2014, 16:28

Hi,

1. Well, now quite good mesh for 3D simulation.
2. Do you really need 3D simulation? It's 2D axisymmetric.
3. 20x350 is not 80x400. Well, at least you've use the same scheme.
(i.e. try going with 2D axisymmetric variant, it's much easier)
4. Are you sure your dt is fine enough?

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November 14, 2014, 16:28		#2
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Hi, 1. Well, now quite good mesh for 3D simulation. 2. Do you really need 3D simulation? It's 2D axisymmetric. 3. 20x350 is not 80x400. Well, at least you've use the same scheme. (i.e. try going with 2D axisymmetric variant, it's much easier) 4. Are you sure your dt is fine enough?