Nucleation and cavitation inception in high Reynolds number shear layers

被引:5
|
作者
Allan, E. S. C. [1 ]
Barbaca, L. [1 ]
Venning, J. A. [1 ]
Russell, P. S. [1 ]
Pearce, B. W. [1 ]
Brandner, P. A. [1 ]
机构
[1] Univ Tasmania, Australian Maritime Coll, Cavitat Res Lab, Launceston, Tas 7250, Australia
关键词
FLOW; PLANE;
D O I
10.1063/5.0132054
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The influence of nucleation on cavitation inception in a high Reynolds number shear layer in the wake of a backward-facing step was experimentally investigated in a water tunnel. The flow was investigated for two nuclei populations: the one naturally occurring in the water and for the water artificially seeded with monodisperse nuclei. Incipient events were observed to form in stretched quasi-streamwise vortices. The collapse of an incipient cavity resulted in a microbubble cloud dispersed into the shear layer and the step re-circulation zone. These microbubbles, generally larger than those naturally occurring in the water, act as preferential sites for re-nucleation, triggering the formation of developed cavitation. This phenomenon rendered statistical characterization of cavitation inception impractical for the natural nuclei population. The re-nucleation issue was addressed by seeding the flow with a population of large monodisperse nuclei, with a critical pressure higher than that of cavitation products. Spatial distribution of the nuclei within the seeded plume was characterized using a volumetric measurement based on Mie-scattering imaging. The ability to discern individual incipient events enabled examination of the effect of cavitation number and the nuclei injection rate on the inception event rate. The event rate was found to follow a power law with cavitation number and vary linearly with the injection rate. Mapping of spatial distribution of cavitation susceptibility was obtained by combining the spatial distributions of incipient events and nuclei concentration. The current work provides a valuable dataset for the development of computational tools for modeling of cavitation inception in nucleated flows.
引用
收藏
页数:20
相关论文
共 50 条
  • [1] CAVITATION INCEPTION IN TURBULENT SHEAR LAYERS
    R.Leucker
    R.Mohn
    G.Rouvé
    [J]. Journal of Hydrodynamics, 1991, (04) : 109 - 117
  • [2] Tip Vortex Cavitation Inception Scaling for High Reynolds Number Applications
    Shen, Young T.
    Gowing, Scott
    Jessup, Stuart
    [J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 2009, 131 (07): : 0713011 - 0713016
  • [3] Numerical study of cavitation inception in the near field of an axisymmetric jet at high Reynolds number
    Cerutti, S
    Knio, OM
    Katz, J
    [J]. PHYSICS OF FLUIDS, 2000, 12 (10) : 2444 - 2460
  • [4] Thin Shear Layers in High Reynolds Number Turbulence—DNS Results
    Takashi Ishihara
    Yukio Kaneda
    Julian C. R. Hunt
    [J]. Flow, Turbulence and Combustion, 2013, 91 : 895 - 929
  • [5] Turbulent shear layers in a uniformly stratified background: DNS at high Reynolds number
    VanDine, Alexandra
    Pham, Hieu T.
    Sarkar, Sutanu
    [J]. JOURNAL OF FLUID MECHANICS, 2021, 916
  • [6] Thin Shear Layers in High Reynolds Number Turbulence-DNS Results
    Ishihara, Takashi
    Kaneda, Yukio
    Hunt, Julian C. R.
    [J]. FLOW TURBULENCE AND COMBUSTION, 2013, 91 (04) : 895 - 929
  • [7] Reynolds stress in turbulent boundary layers at high Reynolds number
    Seo, J
    Castillo, L
    Johansson, TG
    Hangan, H
    [J]. JOURNAL OF TURBULENCE, 2004, 5
  • [8] Prograde vortices, internal shear layers and the Taylor microscale in high-Reynolds-number turbulent boundary layers
    Heisel, Michael
    de Silva, Charitha M.
    Hutchins, Nicholas
    Marusic, Ivan
    Guala, Michele
    [J]. JOURNAL OF FLUID MECHANICS, 2021, 920
  • [9] Mixing by shear instability at high Reynolds number
    Geyer, W. R.
    Lavery, A. C.
    Scully, M. E.
    Trowbridge, J. H.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2010, 37
  • [10] Conditional analysis near strong shear layers in DNS of isotropic turbulence at high Reynolds number
    Ishihara, Takashi
    Hunt, Julian C. R.
    Kaneda, Yukio
    [J]. 13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): STATISTICAL ASPECTS, MODELLING AND SIMULATIONS OF TURBULENCE, 2011, 318