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Questions tagged [maxwell]

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2answers
125 views

Nédélec Elements and Newton-Methods

If you want to develop numerical algorithms for variational inequalities, you often choose a Semismooth Newton Method. In many cases, this approach involves derivatives of $\max$ or $\min$ functions ...
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0answers
91 views

Finite difference method for coupled PDEs: optimizing performance (time step, iterations per step)

I'm solving coupled PDEs using finite difference method: Incompressible Navier-Stokes and the divergence-free induction equation (Maxwell's equations) with non-uniform electrical conductivity. The ...
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0answers
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How to apply Dirichlet boundary condition for lowest order Nedelec element over tetrahedral domain?

The Dirichlet boundary condition is $n \times \vec{E} = n \times \vec{g}$. I don't know how to calculate the boundary value. Any kind of help would be appreciated.
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1answer
5k views

How do I generate maxwell-boltzmann variates using a uniform distribution random number generator?

I am doing a molecular dynamics simulation. I need to assign initial velocities to the atoms. I want to assign the initial velocities which follow the maxwell-boltzmann distribution. How do I ...
8
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2answers
3k views

Open-source 3D FEM Solver for Electromagnetics (Time-Harmonic Maxwell)

I was wondering if there exist any good (accurate/fast/easy-to-use) open-source FEM solvers for 3D time-harmonic Maxwell's equations. I am looking to simulate systems a few wavelengths large in the X/...
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1answer
169 views

Effective “thickness” of finite-difference material elements

I have a 3D finite-difference formulation (for time-harmonic Maxwell using a standard Yee cell grid.) A "perfect electrical conductor" condition can be implemented by enforcing the desired electric ...