The header of Sample.txt implies that the data is generated by an oscilliscope. 

Can your oscilloscope generate binary data files? Then you could attempt to use ?FileTools[Binary] to import the data.

In addition to the other responses, I find that changing the default 2D math font from Times New Roman to a sans-serif font (like Calibri or equivalent) helps with clarity.

@madruga1155 Right now, viscosity is taken into account when calculating the friction factor (i.e. viscosity is used to calculate the Reynolds number, and the Reynolds number is used to calculate the friction factor).

You could also model non-Newtonian or power law liquids etc. This would need a new pipe model (not difficult) with equations describing the viscosity / bulk shear rate relationship.

In Settings tab, set Compiler=false.

If you install a compiler (as described here), you can simulate the model with Compiler=true.

Samir

As an addendum, here's a Maple 15 worksheet that discretizes the Water Hammer PDEs along the spatial dimension, and solves the resulting set of ODEs numerically.

For a given set of inputs, the results are consistent with those of the MapleSim model. There are a few small differences which can be explained by differences in how boundary conditions are set in MapleSim (i.e. the closure characteristics of the valve) and Maple (i.e. the velocity profile at the end of the pipeline)

Water_Hammer_Application.mw

@acer Go ahead with the Application.

When I first wrote the worksheet, I spoke to experts at Maplesoft about the visualization (the responsiveness of pointplots for large numPoints, or other methods of visualization) but no workable result was presented.

I started writing a 3d convex hull routine to remove the interior points (to make the pointplots more responsive), but I never finished...might have to brush the dust off it.

Samir

@acer 

Here's an archive of the worksheet plus screengrabs of plots being produced in situ. I haven't touched the worksheet in over two years because I found it too resource intensive for wider consumption. Use at your own risk :)

Quaternion_Fractal.zip

@acer The Maple 15 version removed a bug in the string manipulation code. There were no other changes apart from that (i.e. the URLs they call are the same).

I can't remember trying the application on Maple 12 (nor do I have this version installed)

@Christopher2222

This worksheet is in better shape

 Countercurrent_doub.mw

@Christopher2222

This worksheet is in better shape

 Countercurrent_doub.mw

@Christopher2222 

There are multiple typos in the worksheet I posted.  Bear with me while I clear them up...

@Christopher2222 

There are multiple typos in the worksheet I posted.  Bear with me while I clear them up...

@Robert Israel 

MapleSim's Parameter block does not understand the EllipticK function (that's why I didn't use the exact expression).  I can, however,  just type the power series expansion into the Parameter block.

@Axel Vogt The worksheet works as expected in Maple 13 and 14.  However, before you mentioned it, I hadn't tried it in Maple 12 - but it seems that it hangs somewhere.  Just so you can see what's going on, here's a version of the worksheet with the procedure exposed: ForexExposed.mw

@stefanv 

I used the Haversine formula to calculate the distance between two longitude/latitude points. This accounts for the curvature of the earth by approximating it with a sphere.