Journal ArticleDOI
Vortex Flow and Cavitation in Liquid Injection: A Comparison between High-Fidelity CFD Simulations and Experimental Visualizations on Transparent Nozzle Replicas
TLDR
In this article, high-fidelity simulations provide a very detailed insight into the vortex generation in the injector nozzle; strings appear within the time scales that are relevant for fast injection events (on the order of 0.1 milliseconds) and their generation seems mostly related to the flow pattern in the sac.About:
This article is published in International Journal of Multiphase Flow.The article was published on 2021-05-01. It has received 16 citations till now. The article focuses on the topics: Nozzle & Vortex.read more
Citations
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Journal ArticleDOI
Data-driven modal decomposition of transient cavitating flow
Journal ArticleDOI
Effect of tip clearance on cavitating flow of a hydraulic axial turbine applied in turbopump
TL;DR: Whitacker et al. as discussed by the authors compared monophase and multiphase CFD simulations at various operating points and turbine configurations, based on Reynolds-Averaged Navier-Stokes (RANS) formulation.
Journal ArticleDOI
Effect of tip clearance on cavitating flow of a hydraulic axial turbine applied in turbopump
TL;DR: Whitacker et al. as mentioned in this paper compared monophase and multiphase CFD schemes for cavitation prediction in the first stage of the Space Shuttle Main Engine (SSME) Liquid Oxygen (LOX) booster turbine, for 3.0, 5.5, and 8.0% tip clearances.
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A parametric study of squealer tip geometries applied in a hydraulic axial turbine used in a rocket engine turbopump
Daniele Tonon,Jesuino Takachi Tomita,Ezio Castejon Garcia,Cleverson Bringhenti,Luiz Eduardo Nunes Almeida +4 more
TL;DR: In this paper , the first stage of the hydraulic axial turbine used in the Low Pressure Oxidizer Turbopump (LPOTP) of the Space Shuttle Main Engine (SSME).
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Assessment of turbulence and cavitation models in prediction of vortex induced cavitating flow in fuel injector nozzles
TL;DR: In this article , the results indicate that the RNG k−ε model and SST k−ω model failed to predict the string cavitation induced by vortex flow in the nozzle due to the drawback of the isotropic vortex-viscosity hypothesis, while the VLES model can provide the predictions of cavitating flow as precise as that using the LES model but on a much coarser mesh.
References
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Volume of fluid (VOF) method for the dynamics of free boundaries
C.W Hirt,B. D. Nichols +1 more
TL;DR: In this paper, the concept of a fractional volume of fluid (VOF) has been used to approximate free boundaries in finite-difference numerical simulations, which is shown to be more flexible and efficient than other methods for treating complicated free boundary configurations.
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Solution of the implicitly discretised reacting flow equations by operator-splitting
TL;DR: In this article, a non-iterative method for handling the coupling of the implicitly discretised time-dependent fluid flow equations is described, based on the use of pressure and velocity as dependent variables and is hence applicable to both the compressible and incompressible versions of the transport equations.
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Evaluation of the turbulence model influence on the numerical simulations of unsteady cavitation
TL;DR: In this article, a simulation of turbulent cavitation in a Venturi-type section was performed by two-dimensional computations of viscous, compressible, and turbulent cavitating flows.
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Large Eddy Simulation and theoretical investigations of the transient cavitating vortical flow structure around a NACA66 hydrofoil
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.