increasing residual -- CFD Online Discussion Forums

April 13, 2020, 00:53

increasing residual

ndtrong

Senior Member

Nguyen Duy Trong

Join Date: Apr 2014

Posts: 124

Rep Power: 12

Hi everyone,

I am trying to simulate interface flow with a cylinder near free surface as shown in figure. However, when I run the simulation with interFoam, it shows that more than 1000 iteration needed for solving alpha, Ux and Uy.
Could someone please help me to explain why is that and how can we solve this issue?
The problem and boundary conditions are in the attached file

Thanks

Attached Images

	cylinder-01.jpg (27.1 KB, 10 views)
	cylinder-02.PNG (51.4 KB, 14 views)
	cylinder-03.jpg (51.9 KB, 9 views)
	cylinder-04.PNG (24.1 KB, 8 views)

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