Define volume mean diameter, equivalent diameter and hydraulic radius?

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Muhammad
05-August-2014

Process Engineering Plant Design Mining Engineering Chemical Engineering

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Date Posted: 2016/02/11

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by Anirban Dhara , Process Engineer - Minerals & Aggregate , STEVIN ROCK

Volume Mean Dia: It is defined as the diameter of a sphere that has the same volume/surface area ratio as a particle of interest

Equivalent dia: An equivalent diameter of a particle is usually defined in relation to a specific sizing method developed on the basis of a certain equivalency criterion.

Hydraulic Radius: The hydraulic radius is the cross sectional area / wetted perimeter. It is a measure of efficiency

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by Basma Alsharkawy , supervisor1 , Halliburton

1- Mean diameter is the distance from one point on a circle,through the center to the other side. D=2r 2- equivalent diameter is the diameter of a circular or pipe that gives the same pressure loss as an equivalent rectangular duct or pipe. 3- hydraulic radius is a measure of channel flow efficiency. OR The ratio of the channel's cross-section area of a conduit in which a fluid is flowing to the inner perimeter of the conduit.

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