# Jani

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Question

I want to make a GUI in which only those functions run whose radio button is on, but how to make it?

Suppose I have 5 differential equations, but I only want to run and plot those, whose radio button is set 'on', and it's importa...

mer än ett år ago | 1 answer | 0

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answerQuestion

GUI - ODE problem, can someone please help me solve an ode system using guide?

I want to make a user interface with gui, which solves a sysmet of differential equations, and some of the variables (f1 and f2)...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

How to discretize a system of spatial and temporal differential equation for mass and heat transfer whit the Euler method?

I want to make a model for the equations which are found in the attached article, and have some questions regarding them. Here ...

mer än ett år ago | 0 answers | 0

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answersQuestion

How to solve a differential equation system with time and space derivates? Where to write (i, j) (i-1, j) (i, j-1)?

Hi! I am modelling the drying of granulates/particles based on the attached article and equation system which contains time and...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

How to plot a circle with polar coordinates in which the colour of the circle changes by data?

Hi! I want to make something like this, which I found in an article. In my work I model the drying of granulates, and the moi...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

How can I make a circle which changes its colour with its properties? I show in the attached figure what I mean.

So I modelled how the mositure changes inside a spherical particle as a function of the particle's radius. I have a lot of da...

mer än ett år ago | 0 answers | 0

### 0

answersQuestion

How can you solve a system of second order differential equation, which is not time, but length and radius dependent?

I thnik it cannot be solved by some prebuild ode integrator, like ode45. I tried using 'for loop', but I don't know, how to solv...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

Solving a system of second order differential equations, with length and radial derivates, but the conditions are quite complex to me.

Hi! I want to use for loop to solve these equations (for drying particles in a fluid bed), but there are two things which preve...

mer än ett år ago | 0 answers | 0

### 0

answersQuestion

Solving system of non-linear partial differential and algebraic equations.

Hi guys! I already had a couple of questions about my fluid-bed drying topic. It is almost over, and I understand pretty much a...

mer än ett år ago | 0 answers | 0

### 0

answersQuestion

How can a differential equation be solved, if its constants are in a system of equation relation?

So the whole equations are here, but for the sake of simplicity I reduced many of the constants, so I can focus only on the rele...

mer än ett år ago | 1 answer | 0

### 1

answerQuestion

Why I can't integrate a matrix in Matlab?

So for a while it worked, but than I ran the program again, and somehow it doesn't work again, though I did not change the code....

mer än ett år ago | 1 answer | 0