How To Read A Moody Diagram

How to read a moody chart. View test prep howtoreadmoodydiagram from ce 303 at california state university los angeles.

Use The Friction Factor To Calculate Frictional Head Loss Pressure

Sonya lopez moody diagram at first glance three datasets in one.

How to read a moody diagram. Reading off a moody diagram watch. An introduction to the famous moody chart. We use the moody chart often to estimate frictional factors.

This value is the roughness of the pipe. Whether the flow is steady or transient we have to use it. At first glance i thought it would be fairly straight forward but the courses book has an example in which it doesnt describe how to read the diagram rather it annoyingly says from the moody diagram friction factor 00053.

This value is the roughness of the pipe. How to read the moody diagram by dr. If the reynolds number falls in the laminar or transition range.

The coefficient can be estimated with the diagram below. Compute the relative pipe roughness. Go to first unread dod1 badges.

Procedure as with many fluid mechanics problems the first order of business is to determine. If the reynolds number falls in the laminar or transition range refer to appropriate equations. The friction factor can usually be interpolated between the laminar value at re 2300 and the turbulent value at re 4000.

To download the notes i use for these videos please click the following link. If the flow is transient 2300 re 4000 the flow varies between laminar and turbulent flow and the friction coefiicient is not possible to determine. If you try to solve this factor directly much complexity is experienced.

A moody chart is commonly used by engineers to calculate the darcy weisbach friction factor which is then in turn used to calculate headpressure loss due to friction in pipes. If however the flow is in the turbulent range we are ready to proceed with the moody chart. Refer to the moody chart.

Compute the relative pipe roughness. Refer to the moody chart. Page 1 of 1.

Si based moody diagram. Read the value of the friction factor at that intersection on the lh scale. Also remember just.

In engineering the moody chart or moody diagram is a graph in non dimensional form that relates the darcy weisbach friction factor f d reynolds number re and surface roughness for fully developed flow in a circular pipe. For circular pipes the problems can be solved using swamee jain equation but for the other types it is really difficult. Start new discussion reply.

It can be used to predict pressure drop or flow rate down such a pipe. 1 report thread starter 3 years ago 1 i have to determine the friction factor. In these cases moody diagram or moody charts are really handy.

Ff2 Friction During Flow In Pipes The Moody Diagram S1701 Geol