Modeling for isothermal and cryogenic cavitation

Tseng, Chien-Chou; Shyy, Wei

doi:10.1016/j.ijheatmasstransfer.2009.09.005

Cited by 82 publications

(77 citation statements)

References 17 publications

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“…However, for thermosensible liquids, the cavity is primarily sustained by the convective liquid, which can pierce into the cavity. More detailed explanations can be found in [6,8,9]. It is revealed by the figures that the simulated starting location of cavitation with DCM is ahead of that with FCM for all cases, which is because of the effects of local pressure on the bubble radius.…”

Section: Discussionmentioning

confidence: 87%

“…Efforts have been made to model cavitating flow with the homogenous equilibrium flow model (HEFM), in which the single-fluid modeling approach is employed for both phases [3][4][5][6][7][8][9][10]. The key for implementation of the HEFM is to calculate the variable density field.…”

mentioning

confidence: 99%

“…Wang et al [11] and Wu et al [12] have reviewed these calculation models in detail. Among the various modeling approaches, the transport equation-based cavitation models (TEM) have been widely used recently [6][7][8][9][10][11][12]. The TEM solves the transport equation of vapor volume (or mass) fraction, whose source terms are the condensation and evaporation rate in the liquid-vapor conversion.…”

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confidence: 99%

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Modeling cavitation flow of cryogenic fluids with thermodynamic phase-change theory

Zhang

Xiang

et al. 2013

Chin. Sci. Bull.

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Cavitation is the formation of vapor bubbles within a liquid where the flow dynamics causes the local static pressure to drop below the vapor pressure. The so-called full cavitation model (FCM) developed by Singhal has been widely used in numerical modeling of the cavitation flow for thermosensible and non-thermosensible fluids. Within the FCM, the bubble size is taken to be equivalent to the maximum possible value to forego the calculation of bubble number density. We developed a new cavitation model by re-calculating the bubble radius in FCM to account for the effects of local pressure.

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Section: Discussionmentioning

confidence: 87%

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confidence: 99%

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confidence: 99%

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Modeling cavitation flow of cryogenic fluids with thermodynamic phase-change theory

Zhang

Xiang

et al. 2013

Chin. Sci. Bull.

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“…And the subsequent cavitating flow pattern depends strongly on the operating conditions. Despite many interesting measurement studies realized on cavitation dynamics, the phenomenon is not yet fully understood due to its complexity related to: laminar/turbulent transition, detached/reattached bubbly flows, shear layers, phase-to-phase interface transfer and vortical structures [10,13].…”

Section: State Of the Artmentioning

confidence: 99%

Investigation of Cavitation Models for Steady and Unsteady Cavitating Flow Simulation

Tran¹,

Nennemann²,

Vu³

et al. 2015

International Journal of Fluid Machinery and Systems

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The objective of this paper is to evaluate the applicability of mass transfer cavitation models and determine appropriate numerical parameters for cavitating flow simulations. CFD simulations were performed for a NACA66 hydrofoil at cavitation numbers of 1.49 and 1.00, corresponding to steady sheet and unsteady sheet/cloud cavitating regimes using the Kubota and Merkle cavitation models. The Merkle model was implemented into CFX by User Fortran code. The Merkle cavitation model is found to give some improvements for cavitating flow simulation results for these cases. Turbulence modeling is also found to have an important contribution to the prediction quality of the simulations. The relationship between the turbulence viscosity modification, in order to take into account the local compressibility at the vapor/liquid interfaces, and the predicted numerical results is clarified. The limitations of current cavitating flow simulation techniques are discussed throughout the paper.

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“…This also can be expressed as a four-equation model by assuming thermal equilibrium between phases. With such formulation, the authors in (Utturkar et al 2005, Tseng & Shyy 2010, Huang et al 2014) adapted a set of models to simulate turbulent cavitating flows in cold water within cryogenic applications. These models, however, utilizes three conservation laws for mixture quantities (mass, momentum, energy) along with a mass equation for the vapour or liquid density including a cavitation source (Utturkar et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of unsteady cavitation in liquid hydrogen flows

Goncalves

Zeidan

2017

IJESMS

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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 utilized 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 modeled using an accurate inviscid approach to describe the features of thermodynamic effects on cavitation.Keywords: Two-phase flow; heat and mass transfer; liquid and hydrogen, cavitation; homogeneous model; splitting techniques, inviscid simulation. Reference · · · Biographical notes: Eric Goncalvès is a Professor in the Aeronautical EngineeringSchool ISAE-ENSMA, Poitiers, France. Currently, he is the head of the Department Fluid Mechanics and Aerodynamics. His research interests are related to the modelling and the simulation of flows for which the density is variable such as compressible flow, two-phase flow and cavitation. Recent work include shock wave boundary layer interaction, thermal effects in cavitation and investigation of three-dimensional effects on cavitation pocket. Dia Zeidan is currently a Tenure-track Assistant Professor in the School of Basic Sciences and Humanities at the German Jordanian University, Amman, Jordan. His expertise is in the mathematical modelling and numerical simulations of multiphase fluid flow problems. Recent work also includes hyperbolicity and conservativity resolution related to two-phase flows equations in the context of the Riemann problem and simulations of such flows over a wide range of non-equilibrium behaviours.

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Modeling for isothermal and cryogenic cavitation

Cited by 82 publications

References 17 publications

Modeling cavitation flow of cryogenic fluids with thermodynamic phase-change theory

Modeling cavitation flow of cryogenic fluids with thermodynamic phase-change theory

Investigation of Cavitation Models for Steady and Unsteady Cavitating Flow Simulation

Numerical simulation of unsteady cavitation in liquid hydrogen flows

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