Author
Xiaoxing Peng
Bio: Xiaoxing Peng is an academic researcher. The author has contributed to research in topics: Cavitation & Vortex. The author has an hindex of 17, co-authored 31 publications receiving 1458 citations.
Topics: Cavitation, Vortex, Turbulence, Large eddy simulation, Vorticity
Papers
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TL;DR: In this paper, the cavitating flow around a NACA66 hydrofoil is studied numerically with particular emphasis on understanding the cavitation structures and the shedding dynamics, including the cavity growth, break-off and collapse downstream.
335 citations
TL;DR: In this paper, the Partially-Averaged Navier-Stokes (PANS) method and a mass transfer cavitation model with the maximum density ratio ( ρ l / ρ v,clip ) effect between the liquid and the vapor were used to simulate cavitating turbulent flow around hydrofoils.
249 citations
TL;DR: In this paper, the authors have carried out numerical simulations of a tip leakage cavitating flow, generated by a straight NACA0009 hydrofoil, using Lagrangian coherent structures (LCSs) combined with Schnerr-Sauer cavitation model.
205 citations
TL;DR: In this paper, a 3D Lagrangian Coherent Structures (LCS) was used to analyze the dynamics of cavitation-vortex interactions in the Delft twisted hydrofoil.
145 citations
TL;DR: In this article, a simulation of a conventional marine propeller in a non-uniform wake was analyzed to predict the excited pressure fluctuations. And the authors showed that the acceleration due to the cavity volume changes is the main source of the pressure fluctuations excited by the propeller cavitation.
142 citations
Cited by
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TL;DR: In this paper, the cavitating flow around a NACA66 hydrofoil is studied numerically with particular emphasis on understanding the cavitation structures and the shedding dynamics, including the cavity growth, break-off and collapse downstream.
335 citations
TL;DR: In this paper, the authors summarized the recent progress for the cavitation study in the hydraulic machinery including turbo-pumps, hydro turbines, etc., and identified the 1-D analysis method, which is identified to be very useful for engineering applications regarding the cavitating flows in inducers, turbine draft tubes, etc.
Abstract: This paper mainly summarizes the recent progresses for the cavitation study in the hydraulic machinery including turbo-pumps, hydro turbines, etc.. Especially, the newly developed numerical methods for simulating cavitating turbulent flows and the achievements with regard to the complicated flow features revealed by using advanced optical techniques as well as cavitation simulation are introduced so as to make a better understanding of the cavitating flow mechanism for hydraulic machinery. Since cavitation instabilities are also vital issue and rather harmful for the operation safety of hydro machines, we present the 1-D analysis method, which is identified to be very useful for engineering applications regarding the cavitating flows in inducers, turbine draft tubes, etc. Though both cavitation and hydraulic machinery are extensively discussed in literatures, one should be aware that a few problems still remains and are open for solution, such as the comprehensive understanding of cavitating turbulent flows especially inside hydro turbines, the unneglectable discrepancies between the numerical and experimental data, etc.. To further promote the study of cavitation in hydraulic machinery, some advanced topics such as a Density-Based solver suitable for highly compressible cavitating turbulent flows, a virtual cavitation tunnel, etc. are addressed for the future works.
296 citations
TL;DR: In this article, the structure of the cavitating flow around a twisted hydrofoil was investigated numerically using the mass transfer cavitation model and the modified RNG k-e model with a local density correction for turbulent eddy viscosity.
277 citations
TL;DR: In this paper, the Partially-Averaged Navier-Stokes (PANS) method and a mass transfer cavitation model with the maximum density ratio ( ρ l / ρ v,clip ) effect between the liquid and the vapor were used to simulate cavitating turbulent flow around hydrofoils.
249 citations
TL;DR: In this paper, the authors investigated the pressure fluctuation intensity and vortex characteristic of a mixed flow pump as turbine at pump mode with a tip clearance, and showed that the tip leakage vortex (TLV) can be divided into four categories, namely, primary TLV, secondary TLV and entangled TLV.
208 citations