# Moody diagram

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### #1 Fox

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Posted 28 January 2004 - 09:48 PM

I have the classpad 300 and I would a program to search in the moody diagram, where I could found it? Where is a web site whith programs

### #2 Andy.Davies

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Posted 28 January 2004 - 09:59 PM

you best bet is either Classpad.org or Crimson's site

moved by andy.davies

### #3 Overlord

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Posted 28 January 2004 - 11:25 PM

what is "moody diagram" ?

### #4 Gerard

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Posted 11 March 2004 - 05:24 PM

The Moody's diagram is a graphic to get a variable to calculate the power you loose caused for the pipe at transfering fluids as water (excuse my english , I'm "lost in translation")

For who's interested in get the moody's diagram:

We have found the solution to get the results of the moody diagram, you've just to put this equation (it's in many books) in the solve mode:
```   1                k       2.51
______= -2 * log(______ + _______)

v?             3.7*d     r* v?```
all this in international mesures

K is the absolute rugosity (in meters)
λ is the lambda
d is the diameter (in meters)
r is the number of Reynolds

I've made a program, but it's only to get the λ, and I think is faster this method because you can change directly all the variables.

### #5 Gerard

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Posted 11 March 2004 - 05:29 PM

sorry the equation has been desconfigurated, let's try...

(1/ √λ) = -2log((k/3.7*d)+(2.51/r*√λ))

and it works for all Reynolds numbers!

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