Numerical estimation of cavitation intensity

Krumenacker, Laurent; Patella, Régiane Fortes; Archer, Antoine

doi:10.1088/1755-1315/22/5/052014

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…On the basis of Krumenacker's work, the volume cavitation power of each fluid cell is projected to all surface elements of the foil using the solid angle [10]. On each element  of the hydrofoil surface and for all  fluid cells:…”

Section: Solid Anglementioning

confidence: 99%

Numerical Cavitation Intensity on a Hydrofoil for 3D Homogeneous Unsteady Viscous Flows

Leclercq¹,

Archer²,

Patella³

et al. 2017

IJFMS

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The cavitation erosion remains an industrial issue for many applications. This paper deals with the cavitation intensity, which can be described as the fluid mechanical loading leading to cavitation damage. The estimation of this quantity is a challenging problem both in terms of modeling the cavitating flow and predicting the erosion due to cavitation. For this purpose, a numerical methodology was proposed to estimate cavitation intensity from 3D unsteady cavitating flow simulations. CFD calculations were carried out using Code_Saturne, which enables U-RANS equations resolution for a homogeneous fluid mixture using the Merkle's model, coupled to a - turbulence model with the Reboud's correction. A post-process cavitation intensity prediction model was developed based on pressure and void fraction derivatives. This model is applied on a flow around a hydrofoil using different physical (inlet velocities) and numerical (meshes and time steps) parameters. The article presents the cavitation intensity model as well as the comparison of this model with experimental results. The numerical predictions of cavitation damage are in good agreement with experimental results obtained by pitting test.

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Section: Solid Anglementioning

confidence: 99%

Numerical Cavitation Intensity on a Hydrofoil for 3D Homogeneous Unsteady Viscous Flows

Leclercq¹,

Archer²,

Patella³

et al. 2017

IJFMS

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“…Furthermore, the Euler-Euler method does not allow accurate predictions of the bubble behaviour and collapse-induced pressures in a cloud of bubbles or in regions close to a solid surface. Krumenacker, Fortes-Patella & Archer (2014) developed a numerical method that determines the cavitation intensity as an indicator for erosion risk when cloud-like cavitation areas collapse. In their method, the flow is simulated using an Euler-Euler approach and a Reynolds-averaged Navier-Stokes (RANS) method coupled with a solver to compute the acoustic energy of single bubbles from a bubble dynamics equation.…”

mentioning

confidence: 99%

Numerical assessment of cavitation-induced erosion using a multi-scale Euler–Lagrange method

Peters

Moctar

2020

J. Fluid Mech.

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“…In the case when the surface is washed by a liquid without deformations (x 3 = 0), the function becomes: (8) Currently, the physics of cavitation erosion is explained by such basic hypotheses as [6,11] 1. Hydromechanical interactions of micro flows of liquids and shock waves; 2.…”

Section: Mathematical Model Of Erosive Cavitationmentioning

confidence: 99%

Studies of Erosion Resistance of Protective Coats on the Surfaces of Machine Elements Washed with Fluids

Adamkiewicz

Waliszyn

2018

Advances in Materials Science

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This article indicated at erosion as one of the causes of degradation of surfaces washed by fluids and conditions of its occurrence. Corrosive – erosive theory of metal surface degradation has been discussed linking it with an instance of destructive processes taking place in cylinder liner blocks of combustion engines. Physics and conditions influencing processes on liquid – washed operational surface phase boundary have been justified. Out of the contemporary hypotheses explaining the physics of cavitation erosion, the bubble theory has been considered. A mathematical model of erosion has been presented in the context of cavitation implosion energy determining crash interactions of liquid cumulative fluxes on the washed surface. Occurring plastic deformations have been graphically explained linking them with the occurrence of fatigue micro-cracks and later with erosive pits. Influence of initial steel hardness on intensity of cavitation erosion has been checked. Discussion of ways to increase metal surface resistance to cavitation erosion has been carried out.

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Numerical estimation of cavitation intensity

Cited by 10 publications

References 4 publications

Numerical Cavitation Intensity on a Hydrofoil for 3D Homogeneous Unsteady Viscous Flows

Numerical Cavitation Intensity on a Hydrofoil for 3D Homogeneous Unsteady Viscous Flows

Numerical assessment of cavitation-induced erosion using a multi-scale Euler–Lagrange method

Studies of Erosion Resistance of Protective Coats on the Surfaces of Machine Elements Washed with Fluids

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