about Roe matrix !

October 13, 2002, 00:24

hello all,

I'm now studying the Roe scheme. But I didn't find how to express the flux's jacobi matrix in terms of (density,velocity,enthalpy ).Who may tell me how to get the expression of the matrix? thanks.

October 14, 2002, 10:23

Hi,

Equation:U_t + F_x=0 ----(*) where U=transpose of[rho rhou rhoE] and F=transpose of[rhou rhou**2+p rhouH]

* is rewritten as U_t + A U_x=0 where A is the Jacobian matrix A= dF/dU. Differentiate the flux matrix components wrt the components of U.

gita

October 15, 2002, 05:26

hi gita, Thank you for your answer.

October 13, 2002, 00:24	about Roe matrix !	#1
Root Willow Guest Posts: n/a	hello all, I'm now studying the Roe scheme. But I didn't find how to express the flux's jacobi matrix in terms of (density,velocity,enthalpy ).Who may tell me how to get the expression of the matrix? thanks.

October 14, 2002, 10:23	Re: about Roe matrix !	#2
gita Guest Posts: n/a	Hi, Equation:U_t + F_x=0 ----() where U=transpose of[rho rhou rhoE] and F=transpose of[rhou rhou2+p rhouH] is rewritten as U_t + A U_x=0 where A is the Jacobian matrix A= dF/dU. Differentiate the flux matrix components wrt the components of U. gita

October 15, 2002, 05:26	Re: about Roe matrix !	#3
Root Willow Guest Posts: n/a	hi gita, Thank you for your answer.

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