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December 16, 2009, 09:14 |
a simple differential operation question
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#1 |
Senior Member
Pei-Ying Hsieh
Join Date: Mar 2009
Posts: 334
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Dear CFD experts,
Can someone post websites that shows differential operations in cartesian/cylindrical coordinates? What I am looking for specifcally is grad(H^2), where H is a vector field. Thanks! phsieh |
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December 17, 2009, 11:52 |
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#2 |
Senior Member
Join Date: Nov 2009
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Any classical Fluid Mechanics book should have the expression for gradient, divergence and rotor in cartesian, cylindrical and spherical coordinates.
Check for example the book of White - Fluid Mechanics Do |
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December 20, 2009, 12:27 |
del differential operator
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#3 |
Senior Member
Pei-Ying Hsieh
Join Date: Mar 2009
Posts: 334
Rep Power: 18 |
Hi,
Thanks for the reply! I do not have White handy. But, could not find what I am looking for in other Fluid Mechanics textbooks or internet. Actually, what I am actually looking for is: del (H^2), where H is a vector field and del is nabla. How do I write out the differential operation in Cartesian Coordinates? Can someone help? phsieh2005 |
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December 20, 2009, 22:44 |
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#4 |
Senior Member
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Or ... you can try Google (it generally works):
http://en.wikipedia.org/wiki/Del_in_...al_coordinates Here you have all your operators gradient, rotor and divergence in Cartesian, Cylindrical and Spherical coordinates. |
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December 20, 2009, 22:53 |
Gradient rule
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#5 |
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December 21, 2009, 07:36 |
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#6 |
Senior Member
Pei-Ying Hsieh
Join Date: Mar 2009
Posts: 334
Rep Power: 18 |
Hi, DoHander,
Thanks! phsieh2005 |
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