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Easy GuideDening a PressureLoss Component
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IntroductionFlowmaster has a discrete loss component which allows engineers to model networks without a highlevel of detail. This may be used to represent a series of pipes where it is not necessary to understandthe behaviours within the series, or where there are many branches of a pipe system and the user is onlyconcerned with what happens at one particular branch.
Application ExampleConsider the example below as modelled in Flowmaster.
In this case, the engineer is trying to calculate the ow rate necessary to conform to the two knownpressure levels. Knowing the pipe diameter (and bend) remains constant at 1.6m, and it is not necessary tounderstand other detail, this network can be dened as shown over.
Easy Guide - Dening a Pressure Loss Component
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The discrete loss component is dened by cross sectional area and a Forward and Reverse Loss Coefficient.Cross sectional area in this case is dened by πr2 where r=0.8m. The Forward Loss Coefficient (k) iscalculated by
and in the example opposite is
k =2 x Pressure drop (Pa)
Liquid Density (kg/m3) x Velocity (m/s) 2
k =2 x (200,000-150,000)
998 x 19.12
k = 0.27
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