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Computational Science : Recent Questions and Answers (Page 38)

Find answers to your questions about Computational Science or help others by answering their Computational Science questions.

(Lack of) Availability of Finite-Difference library for simple 2D PDEs

I would like to solve two types of simple 2D problems, namely the stationary heat equation on an L shaped geometry like this: ...

Asked on 11/28/2020 by Ken Grimes

1 answer

How to effectively find a starting point solving a non-linear equation?

I have the following equation (the Kurz-Giovanola-Trivedi model [1])$$v^2 frac{pi^2 Gamma}{P^2 D^2} + v frac{mC_0(1-k)xi}{D[1-(1-k)Iv(P)]} + G = 0,$$where $Iv(P)=P cdot...

Asked on 11/24/2020 by colombien

1 answer

Jacobi Gauss-Seidel Method

#include<iostream>#include<conio.h>using namespace std;int main(void) { float a[10][10], b[10], m[10], n[10]; int p = 0, q = 0, i = 0, j = 0; ...

Asked on 11/23/2020 by Quan Thanh

0 answer

Python documentation on creation of an exponential random variable

I didn't really know if this stack was the right place to post but I was reading the documentation for creating an exponential random variable in numpy....

Asked on 11/16/2020

1 answer

Good references for dual-weighted residual (DWR) method for goal-oriented adaptive mesh refinement (AMR)

Can anyone help me with good references (books or papers) where I can learn about dual-weighted residual (DWR) method for goal-oriented adaptive mesh refinement (AMR)?...

Asked on 11/08/2020

2 answer

Calypso with quantum espresso for nanoparticles

Any one uses Calypso structure prediction? http://www.calypso.cn/documentation/I want to run a two type molecules nanoparticle structureAny suggestions will be helpfull. Or if any other tools...

Asked on 10/27/2020 by Shafayet Rahat

0 answer

Weak form of the Navier-Cauchy equation

I am trying to obtain the weak form of the Navier-Cauchy equation, which is $$- rho omega ^2 textbf{U} - mu nabla ^2 textbf{U} - (mu + lambda) nabla...

Asked on 10/24/2020 by Lucas Vieira

2 answer

DNS simulation in industry

I have this idea in my mind that Direct Numerical Simulation (DNS) is only used in research since the Reynolds numbers of industrial applications are too high and require computer...

Asked on 10/24/2020 by user36293

1 answer

implementation of shell elements in a topology optimization algorithm

I am working on developing a topology optimization solver based on the finite element method and I want to add a triangular shell element in it. I used the classic...

Asked on 10/16/2020 by Moum

0 answer

How to extract connected components from persistence diagram?

From the given point cloud (Fig. 1), I use Scipy-TDA to extract persistence diagram (Fig. 2). What I'm interested in is to extract 3 circles. For example, I'd like to...

Asked on 10/11/2020 by jakeoung

1 answer

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