Transformation of Moody Diagram

by Krishna C. Asthana, Assoc. Prof. of Civ. Engrg.; Haile Sellassie I Univ., Addis Ababa, Ethiopia,

Serial Information: Journal of the Hydraulics Division, 1974, Vol. 100, Issue 6, Pg. 797-808

Document Type: Journal Paper


The Moody diagram has been extensively used for the solution of pipe flow problems. A revised pipe flow diagram between dimensionless parameters is developed based on the transformation of the Moody diagram with the help of the Darcy equation. The revised diagram eliminates the repeated use of the Darcy equation, the friction factor, and the need of successive trials in the solution of pipe flow problems. It provides a more direct, simple, and convenient means of solving pipe flow problems within the range of accuracy expected from the original Moody diagram.

Subject Headings: Pipelines | Pipe flow | Parameters (statistics) | Friction

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