polynomial profiles

sampathevs · January 11, 2014, 05:08

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

lazregenset · July 17, 2014, 09:56

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

macfly · July 17, 2014, 10:11

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.

lazregenset · July 17, 2014, 12:49

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

macfly · July 17, 2014, 12:57

I can't find the data for you

http://lmgtfy.com/?q=air+density+fun...of+temperature

lazregenset · July 17, 2014, 13:35

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

macfly · July 17, 2014, 14:19

look at post #3, I added a picture that shows everything: http://www.cfd-online.com/Forums/flu...tml#post501994

lazregenset · July 17, 2014, 15:28

thanks i recherche in thise

thanks agan for your tim

January 11, 2014, 05:08	polynomial profiles	#1
sampathevs Member EMAVI V SURYA SAMPATH Join Date: Aug 2011 Location: Malaysia Posts: 85 Rep Power: 14	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 lazregenset likes this.

July 17, 2014, 09:56	hi im soory .have guive mi your tim	#2
lazregenset New Member lazreg Join Date: Jul 2014 Posts: 9 Rep Power: 11	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

July 17, 2014, 12:49	thanks and im soory	#4
lazregenset New Member lazreg Join Date: Jul 2014 Posts: 9 Rep Power: 11	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

July 17, 2014, 12:57		#5
macfly Senior Member François Grégoire Join Date: Jan 2010 Location: Canada Posts: 392 Rep Power: 17	I can't find the data for you http://lmgtfy.com/?q=air+density+fun...of+temperature lazregenset likes this.

July 17, 2014, 13:35	he	#6
lazregenset New Member lazreg Join Date: Jul 2014 Posts: 9 Rep Power: 11	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

July 17, 2014, 14:19		#7
macfly Senior Member François Grégoire Join Date: Jan 2010 Location: Canada Posts: 392 Rep Power: 17	look at post #3, I added a picture that shows everything: http://www.cfd-online.com/Forums/flu...tml#post501994 lazregenset likes this.

July 17, 2014, 15:28	hi	#8
lazregenset New Member lazreg Join Date: Jul 2014 Posts: 9 Rep Power: 11	thanks i recherche in thise thanks agan for your tim

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