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essence of upwinding

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Old   November 18, 2001, 22:21
Default essence of upwinding
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I EVER believed that upwinding is an effective means to introduce numerical dissipation into the scheme. It is also this numerical dissipation that makes upwinding diserable in shock capturing.

-Are these claims correct?

However, as we known, Lax-Friedrichs is a contral method, and it is more dissipative than the first-order upwind scheme.

How to justify the effect of upwinding of a numerical scheme? For dissipation or for the correct influence domain?

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Old   November 18, 2001, 22:29
Default Re: essence of upwinding
Axel Rohde
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Both claims are correct!

In my opinion, dissipation and influence domain go hand in hand (please read my post below yours, which tries to explain inviscid drag).
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