Convergence of ut=uxx?

This is MATLAB code for (ut=uxx ) on {0,1} where u(x,t)=sin(2pi*x)exp[-(2 pi).^2]*t, I.C: u(x,t) = sin(2pi*x); B.C: u(0,t) = u(1,t) =0; L=1; n=1; t_final =0.1; N = 32; %elements dx...

03 April 2019 7,021 4 View

Discretization of ODEs using Runge Kutta Method?

For 1D heat equation, discretization of its vector ODE by Runge-Kutta would be stable than backward Euler?

03 April 2018 8,661 0 View

Can we apply Implicit Euler for non-linear ODE obtained by Galerkin method?

I have exponential terms of temperature in reaction rates used in parabolic heat equation. As I apply Galerkin method to find its ODE, it contains temperature in exponential form at right hand...

31 December 2017 3,221 0 View

How to solve below integral numerically?

I want to discretize (PDE) non-linear heat equation using Galerkin FEM. it includes non-linear reaction reaction rate which can be solved by numerical technique only. please guide me how to...

07 August 2017 5,994 9 View

One of the characteristics of Galerkin Method is its orthogonality, What does it mean?

What is its effect on simulation results?

04 May 2017 7,832 0 View

One of the characteristics of Galerkin Method is its orthogonality, What does it mean?

04 May 2017 6,350 0 View

Is there any good research paper or book on solving non-linear Partial Differential Equations using Galerkin finite element method?

I need help on solving non-linear heat equation with boundary conditions.

04 May 2017 3,143 0 View

What are main advantages of Galerkin finite element method compared to FDM?

I am solving PDE of Parabolic Heat Equation, does Galerkin finite element method provide ODE in space and time simultaneously?

01 January 1970 5,416 12 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

Hi In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein? I got this error in the add-ion stage: Fatal error "./ amber99sb-ildn-HHH.ff / force...

01 March 2021 8,747 4 View