Open AccessJournal Article
Influence of thermodynamics effect on inducer rotating cavitation under low temperature condition
TLDR
In this paper, a numerical analysis of liquid hydrogen effect on the super-synchronous rotating cavitation in 2D blade cascade in inducer is performed with a mixture model based on Rayleigh-Plesset equation with the thermodynamic effect considered.Abstract:
Inducer is a key component of liquid rocket propulsion system to improve the performance of turbopump.It is well-known that rotating cavitation is harmful to turbopump,and even causes the launch failure of a rocket.Cavitation in cryogenic fluids can produce much latent heat,and has a thermodynamic effect because of thermal imbalance around the cavity.A numerical analysis of cryogenic fluids rotating cavitation in 2D blade cascade in inducer is performed with a mixture model based on Rayleigh-Plesset equation with the thermodynamic effect considered.The results indicate that the inlet pressure will decrease when take into account the thermodynamic effect.Changes in the temperature of liquid hydrogen effect on the super-synchronous rotating cavitation are not obvious, but on the sub-synchronous rotating cavitation are significantread more
Citations
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The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect
TL;DR: In this paper, two cavitation models with thermodynamic effects were established based on the Rayleigh-Plesset equation to predict accurately the cavitation characteristics in the high-temperature fluid.
Journal ArticleDOI
Numerical Simulation of Cavitation Performance in Engine Cooling Water Pump Based on a Corrected Cavitation Model
TL;DR: In this paper, the cavitation performance of the engine cooling water pump (ECWP) with different temperatures was numerically simulated based on a corrected cavitation model, and the simulation values of pressure distribution coefficient in hydrofoil surface at 70 °C were in closest agreement with experimental values when the evaporation and condensation coefficients are 10 and 0.002, respectively.
Journal ArticleDOI
Cavitating Flow Suppression in the Draft Tube of a Cryogenic Turbine Expander through Runner Optimization
TL;DR: In this article, the energy loss coefficient of the draft tube is used to describe the cavitation flow in the pipeline, and the goal of reducing cavitation in the pipe is achieved through the optimization design of the runner.
References
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Journal ArticleDOI
The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect
TL;DR: In this paper, two cavitation models with thermodynamic effects were established based on the Rayleigh-Plesset equation to predict accurately the cavitation characteristics in the high-temperature fluid.
Journal ArticleDOI
Numerical Simulation of Cavitation Performance in Engine Cooling Water Pump Based on a Corrected Cavitation Model
TL;DR: In this paper, the cavitation performance of the engine cooling water pump (ECWP) with different temperatures was numerically simulated based on a corrected cavitation model, and the simulation values of pressure distribution coefficient in hydrofoil surface at 70 °C were in closest agreement with experimental values when the evaporation and condensation coefficients are 10 and 0.002, respectively.
Journal ArticleDOI
Cavitating Flow Suppression in the Draft Tube of a Cryogenic Turbine Expander through Runner Optimization
TL;DR: In this article, the energy loss coefficient of the draft tube is used to describe the cavitation flow in the pipeline, and the goal of reducing cavitation in the pipe is achieved through the optimization design of the runner.