Solving ODE with variable parameters

Aleksey_R · November 20, 2013, 17:24

Greetings, Dear FOAMers!

In my task I have to solve a system of ODE every step. Some parameters of these ODE are determined every time step. That means that I have to send values of these parameters to solver every time step. Is it possible in OF?

I failed to find how to send the parameter values into ODESolver every time step. Please, help.

Best regards,
Aleksey.

wyldckat · November 26, 2013, 17:26

Greetings Aleksey,

I'm not sure if this helps solve your problem, but have you looked at the source code file "applications/test/ODE/Test-ODE.C"? https://github.com/OpenFOAM/OpenFOAM...ODE/Test-ODE.C

Best regards,
Bruno

Aleksey_R · November 28, 2013, 15:47

Dear Bruno,

many thanks for your reply!

This example didn't help me. However, now I understand how to do what I want. I just add a number of variables into ODE model.

Best regards,
Aleksey.

November 20, 2013, 17:24	Solving ODE with variable parameters	#1
Aleksey_R Member Aleksey Rukhlenko Join Date: Nov 2009 Location: Moscow Posts: 55 Rep Power: 16	Greetings, Dear FOAMers! In my task I have to solve a system of ODE every step. Some parameters of these ODE are determined every time step. That means that I have to send values of these parameters to solver every time step. Is it possible in OF? I failed to find how to send the parameter values into ODESolver every time step. Please, help. Best regards, Aleksey.

November 26, 2013, 17:26		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Greetings Aleksey, I'm not sure if this helps solve your problem, but have you looked at the source code file "applications/test/ODE/Test-ODE.C"? https://github.com/OpenFOAM/OpenFOAM...ODE/Test-ODE.C Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

November 28, 2013, 15:47		#3
Aleksey_R Member Aleksey Rukhlenko Join Date: Nov 2009 Location: Moscow Posts: 55 Rep Power: 16	Dear Bruno, many thanks for your reply! This example didn't help me. However, now I understand how to do what I want. I just add a number of variables into ODE model. Best regards, Aleksey. wyldckat likes this.

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