# Advice for representing experimental data

#### RobosaurusRex

Hi all,

I have recently done my first experiment in fluid mechanics, and it was a gravity current experiment using UDVP. I have augmented the data, as to remove noise, and performed the statistical analysis.

I have text files which contain the velocities measured by each sensor over the time period measured for. So I have 128 velocities measured over a distance in front of the sensor for each node. (then for each run of the experiment)

I am struggling with how best to use this velocity data to show anything meaningful, I am a newbie to this and I need some advice.
Any hints will be great, I need some idea of where to start and then I am sure that I can run with ideas from there.
I want to reconstruct the distance measured over and then look at the velocity profiles, but I am unsure of how to do this.

Cheers!

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#### berkeman

Mentor
Hi all,

I have recently done my first experiment in fluid mechanics, and it was a gravity current experiment using UDVP. I have augmented the data, as to remove noise, and performed the statistical analysis.

I have text files which contain the velocities measured by each sensor over the time period measured for. So I have 128 velocities measured over a distance in front of the sensor for each node. (then for each run of the experiment)

I am struggling with how best to use this velocity data to show anything meaningful, I am a newbie to this and I need some advice.
Any hints will be great, I need some idea of where to start and then I am sure that I can run with ideas from there.
I want to reconstruct the distance measured over and then look at the velocity profiles, but I am unsure of how to do this.

Cheers!
What were you measuring the fluid velocity as a function of? What were you varying in the experimental setup?

#### RobosaurusRex

What were you measuring the fluid velocity as a function of? What were you varying in the experimental setup?
I measured the velocity at different positions down the flume

#### CWatters

Homework Helper
Gold Member
Perhaps ask yourself what information would a typical reader be looking for?

Why were multiple runs of the experiment performed? Would the reader be interested in differences between runs or just the average of the runs?

I measured the velocity at different positions down the flume
Down and across or just down? Exel can plot 3D graphs if necessary. So you could plot a graph with x and y as position and z as velocity perhaps. Bit like a contour map?

Only you can decide what's important and what's irrelevant.

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