# What 's different between the linearUpwind and LinearUpwindV ?

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 November 14, 2015, 16:29 What 's different between the linearUpwind and LinearUpwindV ? #1 New Member   Jindo Join Date: Mar 2011 Location: Germany Posts: 25 Rep Power: 15 Hi everyone, I have confused between "linearUpwind" and "linearUpwindV". I dont know that as using the "linearUpwindV", it is better than use "linearUpwind" ? Could help me the formula of "linearUpwindV" method ? The word "V" in linearUpwindV ", which is the vector ? Thanks Phuc.

 November 15, 2015, 06:59 #2 Senior Member   Join Date: Jun 2012 Location: Germany, Bochum Posts: 230 Rep Power: 15 I don't know the exact formulation of the different schemes, but some of your questions are answered in the OF UserGuide: http://cfd.direct/openfoam/user-guide/fvschemes/ fede32 likes this.

September 30, 2018, 11:40
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Federico Agustín Caccia
Join Date: Jun 2015
Location: Buenos Aires, Argentina
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Quote:
 Originally Posted by Bazinga I don't know the exact formulation of the different schemes, but some of your questions are answered in the OF UserGuide: http://cfd.direct/openfoam/user-guide/fvschemes/

From the user guide:
‘V’-schemes are specialised versions of schemes designed for vector fields. They differ from conventional schemes by calculating a single limiter which is applied to all components of the vectors, rather than calculating separate limiters for each component of the vector. The ‘V’-schemes’ single limiter is calculated based on the direction of most rapidly changing gradient, resulting in the strongest limiter being calculated which is most stable but arguably less accurate.