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Reason for using delta u/v in momentum eqn?

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Old   September 1, 2006, 02:51
Default Reason for using delta u/v in momentum eqn?
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CH
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Hi!

I have read some papers and they have expressed the velocity in terms of du/dv ie u(n+1)-u(n)=du. However others just used the absolute u/v.

Is there any preferred advantage of using du/dv? Is it better in a steady case?

Thank you
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Old   September 1, 2006, 10:11
Default Re: Reason for using delta u/v in momentum eqn?
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chris
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Hi CH, I guess the delta-formulation arises from the attempt to linearize the NS-eqns by let's say Newton or Picard iterations.

Best, Chris
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