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alperr125
Active Contributor
Engineering Fields - Mechanical Engineering - New Member

Join Date: Jul 2008
Location: istanbul
Posts: 11

MathCAD

07/21/2008 9:52 AM

I use MathCAd to calculating but today I have a problem:

My problem is using matris I take some data in excel (vizcosity density etc) files and I want to calculte pressure drop this properity is change with temperature my problem about using matris. error message says your variable is not scalar because If I use G^2. on the other hand I multiplicate with itself G.G is give result very big I understand it multiplicate element by element
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#1

Re: MathCAD

07/21/2008 10:10 AM

What a strange equation!

Viscosity appears in the numerator while calculating Reynolds' Number. Most pressure drop in pipes calculations involve the raising of Reynolds' Number to some non-unity power.

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High Lander
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Join Date: Feb 2008
Location: Everywhere, but nowhere.
Posts: 88
#2

Re: MathCAD

07/21/2008 11:05 AM

I don't get you.

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Kev_brown
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Engineering Fields - Mechanical Engineering - Member Engineering Fields - Piping Design Engineering - Member United Kingdom - Member - New Member Technical Fields - Education - New Member Popular Science - Cosmology - New Member

Join Date: Sep 2006
Location: England
Posts: 101
Good Answers: 3
#3

Re: MathCAD

07/22/2008 4:41 AM

I use Mathcad on a daily basis at work so may be able to help you out here.

I need to see a picture of what is wrong though to aid the understanding. There are others out there on this forum who could help too I believe and a picture would be beneficial to all.

Kev Brown
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alperr125
Active Contributor
Engineering Fields - Mechanical Engineering - New Member

Join Date: Jul 2008
Location: istanbul
Posts: 11
#4
In reply to #3

Re: MathCAD

07/22/2008 4:55 AM

Thanks very much about your interest to my problem I solve it today. I find my mistake so I calculate and attain my aim.

If I have problem you will the firsrt person to consult in my mind

have nice day
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alperr125 (1); High Lander (1); Kev_brown (1); PWSlack (1)

Previous in Forum: Tube filling machines for manufacturing tube heaters   Next in Forum: How to calculate BTU/hr to heat water?

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