Hashim

Last seen: 3 mois il y a | Actif depuis 2021

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How to input a novel boundary condition for a coupled PDE system
Hi all, I am trying to simulate a coupled PDE system with a non typical boundary conditions using the pde1dm solver which is b...

3 mois il y a | 2 réponses | 0

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Question

How to set this time derivative boundary condition using MOL?
LHS = Left hand side aka BC = Boundary condition Hi, I have a system of coupled raection diffusion PDEs as such. F...

plus d'un an il y a | 1 réponse | 0

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Question

Can we solve convection diffusion equation using pdetoolbox given a is constant vector?
Hi! We would like to solve the following 2D convection diffusion equation. Would it be possible using vanilla MATLAB pdetoolbo...

presque 2 ans il y a | 1 réponse | 0

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Question

Animate results from PDE toolbox
Hi, I am trying to animate results from a PDE toolbox script. F=figure(1); MyVideo = VideoWriter(sprintf('2DSys.a...

environ 2 ans il y a | 1 réponse | 0

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Question

Fitting uneven data to a function
Hi! So, I recently asked a question as to how to solve a summation (link) and I think I have the function working but I am h...

environ 2 ans il y a | 1 réponse | 0

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Question

Working out a summation for fitting a curve
Hi, I want to work out a summation that goes as. I want to fit this to a curve plotted as on the y axis and on the x a...

plus de 2 ans il y a | 1 réponse | 0

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Question

Can we solve ODEs as a nested function while using pdepe?
Hi, I would like to know how to solve ODEs as a nested function or some other way in my pdepe scripts? So lets say this belo...

plus de 2 ans il y a | 1 réponse | 0

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Question

How to pass multiple vectors (possibly a matrix) to pdepe and output a respective vector matrix?
Hi! I have a matrix of parameters (lets say a design of experiments) which I would like to pass to pdepe and obtain a numerica...

plus de 2 ans il y a | 1 réponse | 0

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Question

How can I adjust the output of my pdepe function for nlinfit?
Hi! I have the following system of coupled PDEs which I have solved using the pdepe solver. I have compared it to an analytica...

plus de 2 ans il y a | 1 réponse | 0

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Question

How to bundle function input for optimization
Hi! I am trying to optimize a pdepe function of the form; function I_num_ano1 = PSw_EK_v11(k_m, D_m, s_bulk) Here I want to ...

plus de 2 ans il y a | 1 réponse | 0

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Question

How to concatenate output of objective function for lsqcurvefit?
Hi All, I have an objective function of the form function [I_num] = PSw_EK_v7(k_m, s_bulk) k_m is the variable I want to ...

environ 3 ans il y a | 1 réponse | 0

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Question

How would you go about solving an equation of the type given?
Hi I would like to solve equation that goes something like... In above equation is a constant. is the electrode poten...

environ 3 ans il y a | 1 réponse | 0

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A résolu

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

environ 3 ans il y a

A résolu

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

environ 3 ans il y a

A résolu

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

environ 3 ans il y a

Question

How to fit data to a PDE using lsqcurvefit/lsqnonlin where y_pdepe is calculated from pdepe output
Hi All, I want to fit some experimental data to my system of PDEs and estimate some system paramters. Trouble is my numerical ...

environ 3 ans il y a | 1 réponse | 0

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Question

Is there any way to pass a matrix (not an array) from sol1 as the IC-2 for finding sol2

plus de 3 ans il y a | 1 réponse | 0

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Réponse apportée
How to pass solution of pdefun1 as IC-2 for pdefun2
Just so that anybody's thinking there is a way to pass solution from pdefun1 to icfunc2... here is a solution from @Torsten on t...

plus de 3 ans il y a | 0

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How to pass solution of pdefun1 as IC-2 for pdefun2
my pde is Given below is my effort so far... function pdepe_philip_v3b % 1-b Extend the above calculation to mo...

plus de 3 ans il y a | 1 réponse | 0

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Question

Comparing two row vectors to find constant slope for steady state condition
I am comparing two rows to find if at any point I am getting a uniform slope (a condition for steady state let's say in a diffus...

plus de 3 ans il y a | 1 réponse | 0

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