Simulation of Steady-State Flow in a Constricted Tube with Laminar Viscous Model

rezatabe · September 9, 2011, 03:00

Hi all,
I want to simulate a steady-state flow in a constricted tube with laminar viscous model but with increasing Reynolds number or stenosis level, residuals didn't converge.please help me.

laurentb · September 9, 2011, 09:41

Hi,

We need more information in order to help you :

Dimension 2D or 3D
Mesh quality (Mesh>Info>Quality)
Boundary condition
...

Send us your case if you can

rezatabe · September 9, 2011, 13:49

Dear laurentb,

Additional information are
Fluid:blood
Dimension: axisymmetric flow
Boundary condition: velocity inlet, outflow, wall, axis. I examined another boundary conditions like that mass flow inlet and pressure outlet but residuals didn't converge.
Mesh quality: I used quadrilateral elements. When i simulate the same problem with k-omega SST turbulence model, wall Y Plus obtained under unit (i.e. 0.6).
Please give me an e-mail address until I send my case.

September 9, 2011, 03:00	Simulation of Steady-State Flow in a Constricted Tube with Laminar Viscous Model	#1
rezatabe New Member reza tabe Join Date: Sep 2011 Posts: 2 Rep Power: 0	Hi all, I want to simulate a steady-state flow in a constricted tube with laminar viscous model but with increasing Reynolds number or stenosis level, residuals didn't converge.please help me.

September 9, 2011, 09:41		#2
laurentb Member Laurent B Join Date: Jun 2009 Location: Lille, FRANCE Posts: 70 Rep Power: 17	Hi, We need more information in order to help you : Dimension 2D or 3D Mesh quality (Mesh>Info>Quality) Boundary condition ... Send us your case if you can rezatabe likes this.

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September 9, 2011, 13:49		#3
rezatabe New Member reza tabe Join Date: Sep 2011 Posts: 2 Rep Power: 0	Dear laurentb, Additional information are Fluid:blood Dimension: axisymmetric flow Boundary condition: velocity inlet, outflow, wall, axis. I examined another boundary conditions like that mass flow inlet and pressure outlet but residuals didn't converge. Mesh quality: I used quadrilateral elements. When i simulate the same problem with k-omega SST turbulence model, wall Y Plus obtained under unit (i.e. 0.6). Please give me an e-mail address until I send my case.