coupled Ordinary Differential Equations
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Can someone help me solve the following set of coupled equations
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With initial conditions 
; 
; r ranges from 0 to 30. Take 
.
; ; r ranges from 0 to 30. Take .
needs to be interpolated with calculated pressure at every iteration (which I can handle with).2 Comments
What problems do you encounter when you try to use ode45 to solve ? "interp1" can be used for interpolation therein.
Sam Chak
on 2 Dec 2025
If r can range from 0 to 30, then singularity will occur at 
. Since both the numerator and denominator have division-by-zero terms, then 
will become an indeterminate form. The response of the variable m will depend on the behavior of the function 
.
. Since both the numerator and denominator have division-by-zero terms, then will become an indeterminate form. The response of the variable m will depend on the behavior of the function . Answers (0)
This question is closed.
on 2 Dec 2025
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on 17 Dec 2025
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