Method of characteristics: why is it so good?

A.E. Vardy, A.S. Tijsseling

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

the method of characteristics (MOC) has undoubtedly been a wonderful bonus for the pressure surge community. Its simplicity is almost too good to believe and, ien used properly, the accuracy of its predictions in practical applications is a great comfort When the method is applied to liquid flows in elastic pipes, these attributes are so robust that they are commonly taken for granted This forum paper explores how far we may stray from "liquid flows in elastic pipes" before reliance on the attributes ceases to be safe. This is done by independent assessments of(i) LI1S terms - i.e. differential terms, (ii) RIIS terms - e.g. friction, mass addition and (iii) the gradients of the characteristics Questions that arc answered include: Is it possible to express MOC equations with truly constant coefficients of 1.IIS terms? Is it possible to show how quasi.steady friction influences wave speed? Is it possible to be confident of reproducing steady flow correctly.

Original languageEnglish
Title of host publicationBHR Group - 12th International Conference on Pressure Surges, 18-20 November 2015, Dublin, Ireland
Place of Publications.l.
PublisherBHR Group Limited
Pages327-341
Number of pages15
ISBN (Electronic)9781510817180
Publication statusPublished - 2016
Event12th International Conference on Pressure Surges - Dublin, Ireland
Duration: 18 Nov 201520 Nov 2015

Conference

Conference12th International Conference on Pressure Surges
CountryIreland
CityDublin
Period18/11/1520/11/15

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