Numerical simulation of unsteady cavitation in liquid hydrogen flows. (2017)

• Record Type: Journal Article
• Authors: GoncalvÁ¨s, Eric; Zeidan, Dia
• Is Part Of: International journal of engineering systems modelling and simulation. Volume 9:Number 1(2017)
• Page Start: 41
• Page End: 52
• Publication Date: 2017
• Subjects: two-phase flow -- heat transfer -- mass transfer -- numerical simulation -- unsteady cavitation -- liquid hydrogen flows -- homogeneous models -- splitting techniques -- inviscid simulation -- modelling -- rarefaction -- shock waves -- cryogenic conditions -- thermodynamics; Engineering systems -- Computer simulation -- Periodicals; Engineering systems -- Mathematical models -- Periodicals; 620.0042
• Languages: English
• ISSNs: 1755-9758

Abstract

An unsteady cavitation model in liquid hydrogen flow is studied in the context of compressible, two-phase, one-fluid inviscid solver. This is accomplished by applying three conservation laws for mixture mass, mixture momentum and total energy along with gas volume fraction transport equation, with thermodynamic effects. Various mass transfers between phases are utilised to study the process under consideration. A numerical procedure is presented for the simulation of cavitation due to rarefaction and shock waves. Attention is focused on cavitation in which the simulated fluid is liquid hydrogen in cryogenic conditions. Numerical results are in close agreement with theoretical solutions for several test cases. The current numerical results show that liquid hydrogen flow can be accurately modelled using an accurate inviscid approach to describe the features of thermodynamic effects on cavitation.