FORTRAN 90 - DVERK? - initial condition solver

FrogPad · May 14, 2008

Hi,

I am new to FORTRAN and am trying to work with a system of ODE's. Does someone know of a routine like DVERK for solving initial condition problems for FORTRAN 90?

In MATLAB I would simply use ODE45. I just need something similar.

Thank you!

Integral · May 14, 2008

Your best bet would be to code your own. Start with a Eulers method, this is very simple though not so precise. A 4th order Runga Kutta routine is also easy to code and is quite accurate. Do a bit of web searching and have a go at it.

FrogPad · May 14, 2008

Yeah both the Euler and the fixed step size Runge-Kutta are simple implementations. The DVERK and ode45 both use adaptive step-size routines, and it gets much more complicated there.

FrogPad · May 16, 2008

If anyone comes upon this thread, here is a reference...

check out:
> RKSUITE
> http://www.netlib.org/ode/rksuite/

FORTRAN 90 - DVERK? - initial condition solver

Discussion

Undergrad Why ##a^0=1##?

Undergrad Finding the minimum distance between two curves

Undergrad Mixed approximation vs. full approximation for a power series expansion

Undergrad Correct Upper/Lower limits for continuation of solutions for ODE

High School Arc Length for Hyperbolic Sin

Undergrad Correct Upper/Lower limits for continuation of solutions for ODE

Graduate About ellipticity and a proof that a system of PDEs is elliptic

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

FORTRAN 90 - DVERK? - initial condition solver

Discussion

Similar threads

Undergrad Understanding Euler Method: Finding Initial Condition of y(0)=1

Undergrad Quasilinear Equation but with non-zero initial condition?

Undergrad Non-linear ODE: initial conditions

Graduate How to Find Initial Conditions for a Fifth Order ODE in Visco-Elastic Models?

Undergrad Can initial conditions for an ODE be given by functions instead of constants?

Undergrad Solve the ODE with initial condition:

Please help me solve this differential equation for the initial condition (0,-1)

Solving the ODE $u_t+u^2 u_x=0$ with Initial Condition $u(x,0)=2+x$

Undergrad Is there a way in Lagrangian mechanics to incorporate the inertial response from initial momentum when using initial conditions instead of BCs?

How to Solve a Separable Equation with Initial Condition u(0)=6?