Hi

Problems about VDP compute was fixed, and the program was improved, now it is faster and extended to liquid fase. Now you can work in gas or liquid fase and you can see what formule is used by the program.

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Some problem about of units convertions were fixed.

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check out that the  values of vicosity and densiy are all right.

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This program is used when you want to estimate the diameter of pipe.

Example

Image you need to move 119204gr/hr of Methane, the pressure in the beginning is 3.98Atm, and the end must be 1.68. The temperature in the beginning is 75F and the end is estimate in 65F. If the length of the pipe is 2mile, what is the diameter?

You can test in this site : http://petrochemical.gronerth.com/linkus.php?link=23

Have a nice day