Peter

Active since 2012

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error using streamline function
I am trying to plot the stream lines for the velocity field in the attached mat file. The vector field is easily plotted using t...

meer dan 9 jaar ago | 0 answers | 1

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Question

Increase spacing between legend entries
Hi, I've created a legend using the commands: hl = legend('$$Pe = 400 \vspace{5mm}$$','$$Pe = 800$$','$$Pe = 1200$$','$$Pe...

bijna 12 jaar ago | 1 answer | 0

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Question

How can I use cftool or any other function to get a fit for an oscillating function bounded by an upper and lower envelope function?
I am trying to curve fit a data set that resembles an wave bounded by and upper and lower function using cftool. However all my ...

ongeveer 12 jaar ago | 0 answers | 0

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Question

invert nearly singular matrix
I am trying to solve the poisson equation in cylindrical coordinates using a finite difference which essentially narrows down to...

meer dan 12 jaar ago | 1 answer | 0

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answer

Question

Matrix multiplication error
I am experiencing a strage error in matlab. I have matrix A and a vector x. I expect that if I perform the following operations,...

meer dan 12 jaar ago | 0 answers | 0

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Question

reversible matrix operation
I am debugging my cfd code and I am checking the validity of my matrices. I have created a finite difference laplacian matri...

meer dan 12 jaar ago | 3 answers | 0

3

answers

Question

divergence in cylindrical coordinates
I have a vector field in axisymmetrical cylindrical coordinates composed of u_r and u_z. Is there a function in matlab that calc...

meer dan 12 jaar ago | 1 answer | 0

1

answer

Question

plot shifted profiles
I would like plot a set of profiles on the same graph to compare them but I want to shift them slightly so that the features of ...

meer dan 12 jaar ago | 0 answers | 0

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answers

Question

surface integral of discrete data
I would like to compute the circulation of a velocity field. I think that the best way would be to compute the vorticity and the...

meer dan 12 jaar ago | 2 answers | 0

2

answers