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What's the difference between residual and cauchy in convergence criteria

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Old   September 7, 2015, 08:43
Default What's the difference between residual and cauchy in convergence criteria
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Jason Shih
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Hi,
I'm using SU2_v3.2.7 for shape optimization, but I'm a little confuse about the option RESIDUAL and CAUCHY in convergence criteria. Can anybody explain the difference between these options for me?
Thanks in advance!
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Old   September 15, 2015, 16:06
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Andrw Wendorff
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The cauchy convergence looks at one of the coefficients and when the coefficient is steady to a specified decimal place for a certain number of elements (also specified) then the run stops. The residual looks at the density residual and requires that residual to decrease a specified number orders of magnitude.
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Old   September 24, 2015, 03:40
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Jason Shih
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Hi,Andrw
Thanks for your reply,that helps.
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Old   March 12, 2018, 17:58
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hello,

what does it mean convergence criteria for the residuals?
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