Referring to ordinary differential equations that require an extremely small timestep to guarantee numerical stability.
Questions tagged [stiffness]
58 questions
3
votes
2 answers
Stiffness ratio evolution for odes
I had a general query related to calculation of stiffness ratio evolution for a set of coupled odes over a certain time interval. My question is, while calculating the eigen values from the jacobian matrix do we need to know the exact solution at…
Ushnik Mukherjee
- 55
- 4
2
votes
2 answers
Checking if a given differential equation is stiff
i have to decide if the following differential equation is stiff:
$$y''(t)=-201y'-200y^2 + 2, \quad t\in[0,20].$$
Sadly, I don't have any solutions. So, what I did was implementing explicit and implicit euler and look at the result for various step…
xotix
- 241
- 2
- 6
-1
votes
2 answers
RK4 for stiff IVP
I need a solver of stiff Inital-Value Problems (IVP) in python exploiting RK4 preferably explicit. I have been searching for past few days but could not find it. Following are my queries:
Does the solver, i.e. any module, exist?
If no, will it be…
zen
- 1