# how calculate jacobian matrix?

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 July 19, 1999, 03:20 how calculate jacobian matrix? #1 Lee, Juhee Guest   Posts: n/a hi here. i am a beginner on CVM(control volume method). i'd like to know jacobian maxtrix. the Euler equaiton is dQ/dt + dE/dx + dF/dy = 0. how can i calculate jacobian matrix? jacobian=dE/dQ thank you.

 July 19, 1999, 11:30 Re: how calculate jacobian matrix? #2 Andrei Chernousov Guest   Posts: n/a Hello Lee Juhee! First of all, derivation of analytical expressions for derivatives of dF/dQ type is straightforward and can be easily explained and performed, but it is rather tedious work. If you are interested only in the final result, I can send you programs written in C language for testing not only Jacobians but also their (very useful) diagonalizing transformations ([A]=dF/dQ=[1/S]{L}[S], etc. ) for Jacobians for euler (inviscid) terms in 1D, 2D and 3d. These codes contains all the formulae you need. Best regards, Andrei pooja likes this.

 May 23, 2011, 17:03 #3 New Member   dushyant Join Date: May 2011 Posts: 6 Rep Power: 6 Hiii , I will be thankfull to you if u can send those files of jacobians to me my mail id : sagar_friend_4u@yahoo.com Hoping for a positive response thanx in advance

 May 25, 2011, 04:19 #4 Member   Ramesh K Join Date: Dec 2009 Location: Bangalore Posts: 65 Rep Power: 7 Hi You can find the Jacobian Matrices for both viscous and invicid fluxes in the appendix of T.J.Chung and Blazek Textbooks.

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