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Old   January 11, 2014, 06:08
Default polynomial profiles
  #1
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EMAVI V SURYA SAMPATH
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hi all,

can any1 explain me how the coefficients are given in the below link.


http://aerojet.engr.ucdavis.edu/flue...ug/node325.htm


Will be great full, if any1 can repy
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Old   July 17, 2014, 09:56
Default hi im soory .have guive mi your tim
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lazreg
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im same pb
how to calcul A1.A2.A3......
http://jullio.pe.kr/fluent6.1/help/html/ug/node282.htm
im in the big pb thanks
thanks
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Old   July 17, 2014, 10:11
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François Grégoire
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Presuming you have access to Excel:
1. plot the data (e.g. Cp as a function of temperature)
2. right-click on any data point and 'Add Trendline...'
3. choose Linear or Polynomial Order X depending on how well the curve fits the data on the plot
4. click 'Display Equation on chart' and there you have the coefficients

You can do the same overall procedure in a bunch of softwares like Matlab, Octave, Python, etc.

P.S. Asking the same question 10 times in a bunch of threads is not good forum behavior. Ask your question ONCE on the most recent thread that is related or start a new one.
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Last edited by macfly; July 17, 2014 at 14:18. Reason: picture added
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Old   July 17, 2014, 12:49
Default thanks and im soory
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lazreg
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thanks and im soory fo the methode of the quetion
bat how to fand the excel data for density fonction T
and a gan thanks
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Old   July 17, 2014, 12:57
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François Grégoire
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I can't find the data for you

http://lmgtfy.com/?q=air+density+fun...of+temperature
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Old   July 17, 2014, 13:35
Default he
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lazreg
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thanks
bat im recherche in the calcul A1.A2..ex

Please I need to clarify!!!!!!!
donner moi un exemple svp . et je m'excuse pour voutre tomp
i need you halp
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Old   July 17, 2014, 14:19
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François Grégoire
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look at post #3, I added a picture that shows everything: polynomial profiles
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Old   July 17, 2014, 15:28
Default hi
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lazreg
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thanks i recherche in thise
thanks agan for your tim
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