1D MAC FDM Fixed Inlet

October 26, 2004, 03:33

G'day people.

I want to solve 1D viscid Euler set of equation.Flow is through a pipe, and all the paramaters ( rho, v,T) are fixed at the inlet boundary. questions:

1-does fixing all parameters cause instability?

2-what is the best practice for time step size?

October 26, 2004, 10:17

I still need help about that maccormac's technique.

I selected the density to be float and others to ve fixed. Although time steps are very small(0.001 s for grid size 0.1m)i have crash after 15~16th time step.

Helpppppppppppppppp

Hilfeeeeeeeeeeeeeeee

thanks

October 26, 2004, 03:33	1D MAC FDM Fixed Inlet	#1
Baris Guest Posts: n/a	G'day people. I want to solve 1D viscid Euler set of equation.Flow is through a pipe, and all the paramaters ( rho, v,T) are fixed at the inlet boundary. questions: 1-does fixing all parameters cause instability? 2-what is the best practice for time step size?

October 26, 2004, 10:17	Re: 1D MAC FDM Fixed Inlet	#2
Baris Guest Posts: n/a	I still need help about that maccormac's technique. I selected the density to be float and others to ve fixed. Although time steps are very small(0.001 s for grid size 0.1m)i have crash after 15~16th time step. Helpppppppppppppppp Hilfeeeeeeeeeeeeeeee thanks

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