# Questions tagged [finite-difference]

Referring to the discretization of derivatives by Finite differences, and its applications to numerical solutions of partial differential equations.

552 questions
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### CFD implementation in software [closed]

I've been learning CFD theory for 4 months (which includes FEA, FDM AND FVM) and now I want to start running simulations. As a novice to CFD software, I would appreciate some advice on where to start, ...
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### Suitable method for simulation of in-fiber interferometer

I am trying to simulate an optic-fiber sensor (in-fiber interferometer) to study its respond to temperature. The method I am using is finite-difference time-domain (FDTD), and I come out with a large ...
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### Boundary conditions generalized eigenvalue problem

Consider the following eigenvalue problem $$\mathcal {L} x(s) = \lambda x(s),$$ where \mathcal {L} = \alpha \partial^4_s + (s^2-1)\partial^2_s + s \...
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### How do I program periodic boundary conditions? [duplicate]

Hi I have a code below that solves non linear coupled PDE's given Dirichlet boundary conditions. However I need to implement periodic boundary conditions. The periodic boundary conditions are ...
I'm trying to solve a nonlinear partial differential equation $$L(u_{xxtt},u_{xx}u_{tt},u_{xt}^2,u_{xt},u_{tt})=0$$ using finite difference methods. In order to remove the ...