How To Read A Moody Diagram

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. Page 1 of 1.

Factoring Flow Chart With Examples Lovely How To Read A Moody Chart

An introduction to the famous moody chart.

How to read a moody diagram. To download the notes i use for these videos please click the following link. We use the moody chart often to estimate frictional factors. Start new discussion reply.

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. If you try to solve this factor directly much complexity is experienced.

It can be used to predict pressure drop or flow rate down such a pipe. In these cases moody diagram or moody charts are really handy. How to read the moody diagram by dr.

Read the value of the friction factor at that intersection on the lh scale. This value is the roughness of the pipe. Go to first unread dod1 badges.

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. Reading off a moody diagram watch. 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.

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. 1 report thread starter 3 years ago 1 i have to determine the friction factor. Si based moody diagram.

Whether the flow is steady or transient we have to use it. Compute the relative pipe roughness. The coefficient can be estimated with the diagram below.

View test prep howtoreadmoodydiagram from ce 303 at california state university los angeles. Refer to the moody chart. Sonya lopez moody diagram at first glance three datasets in one.

Also remember just. For circular pipes the problems can be solved using swamee jain equation but for the other types it is really difficult. How to read a moody chart.

The friction factor can usually be interpolated between the laminar value at re 2300 and the turbulent value at re 4000. If however the flow is in the turbulent range we are ready to proceed with the moody chart. This value is the roughness of the pipe.

If the reynolds number falls in the laminar or transition range refer to appropriate equations. Compute the relative pipe roughness. Refer to the moody chart.

Moody Diagram Friction Loss