Modelling flow in a pipe with a glow plug

discovery_72 · July 15, 2015, 04:37

Hi you all,

I am experiencing some troubles modelling a problem for a research I'm working on.

The geometry is quite "simple", it consists on a cylindrical pipe with a cylinder inserted perpendicular to its axis. The cylinder simulates a glow plug, so I set its surface temperature equal to that of the plug. I am using a k-epsilon turbulent model and setting the intensity = 10% and length scale = 0.038D_pipe at both the inlet and outlet.
However, the solution is not converging and I do not know how to solve it.

Thank you all in advance!

LuckyTran · July 15, 2015, 17:27

Check to make sure your mesh is in the right units.
Check consistency of the boundary conditions.
Check your mesh quality to make sure you don't have a bad mesh.

July 15, 2015, 04:37	Modelling flow in a pipe with a glow plug	#1
discovery_72 New Member Daniel Join Date: Sep 2013 Posts: 5 Rep Power: 13	Hi you all, I am experiencing some troubles modelling a problem for a research I'm working on. The geometry is quite "simple", it consists on a cylindrical pipe with a cylinder inserted perpendicular to its axis. The cylinder simulates a glow plug, so I set its surface temperature equal to that of the plug. I am using a k-epsilon turbulent model and setting the intensity = 10% and length scale = 0.038D_pipe at both the inlet and outlet. However, the solution is not converging and I do not know how to solve it. Thank you all in advance! Last edited by discovery_72; July 15, 2015 at 09:34.

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July 15, 2015, 17:27		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,751 Rep Power: 66	Check to make sure your mesh is in the right units. Check consistency of the boundary conditions. Check your mesh quality to make sure you don't have a bad mesh.