LES or RANS ?

July 13, 2007, 11:34

I'm trying to model a co-axial flow into a dead end tube.I hope to extract concentration profiles and velocity fields.

1. How do I decide between LES and RANS ?

2. Will my mesh be different for both the cases ?

3.How can I perform time averaging on the .dat files without having to extract specific columns from the file using MATLAB ?

Any tips will be greatly appreciated.

Many thanks !

July 13, 2007, 16:16

1. Depends on what you are trying to achieve, your computational resources, Reynolds number, ...

2. For true LES, very different. For DES, possibly the same.

July 13, 2007, 11:34	LES or RANS ?	#1
TC Guest Posts: n/a	I'm trying to model a co-axial flow into a dead end tube.I hope to extract concentration profiles and velocity fields. 1. How do I decide between LES and RANS ? 2. Will my mesh be different for both the cases ? 3.How can I perform time averaging on the .dat files without having to extract specific columns from the file using MATLAB ? Any tips will be greatly appreciated. Many thanks !

July 13, 2007, 16:16	Re: LES or RANS ?	#2
Joe Guest Posts: n/a	1. Depends on what you are trying to achieve, your computational resources, Reynolds number, ... 2. For true LES, very different. For DES, possibly the same.

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