DNS: crashes after a few iterations due to rising Courant number

milena · March 8, 2016, 07:44

Hello!

I am running DNS of a pipe flow and I am facing the following problem: The Courant number starts at a value lower then one, but as iterations advances, it increases and my simulation blows.

I am using cyclic BC at inlet and outlet.

Thanks!

wyldckat · March 13, 2016, 14:09

Quick comment: Please follow the instructions given here: How to give enough info to get help

calf.Z · November 4, 2018, 07:09

Dear milena，
I am also dealing with DNS in pipe flow，have you found the answer？

Any advice or guide about DNS will be highly appreciated.

Regards，
Calf.

March 8, 2016, 07:44	DNS: crashes after a few iterations due to rising Courant number	#1
milena New Member Join Date: Jul 2014 Posts: 2 Rep Power: 0	Hello! I am running DNS of a pipe flow and I am facing the following problem: The Courant number starts at a value lower then one, but as iterations advances, it increases and my simulation blows. I am using cyclic BC at inlet and outlet. Thanks!

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March 13, 2016, 14:09		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Quick comment: Please follow the instructions given here: How to give enough info to get help

November 4, 2018, 07:09		#3
calf.Z Senior Member Jianrui Zeng Join Date: May 2018 Location: China Posts: 157 Rep Power: 7	Dear milena， I am also dealing with DNS in pipe flow，have you found the answer？ Any advice or guide about DNS will be highly appreciated. Regards， Calf.