Numerical Study of Cavitating Flows in an External Gear Pump with Special Emphasis on Thermodynamic Effects
Source abstract
Abstract
Cavitation is a critical phenomenon in hydraulic systems, particularly in gear pumps, where it can significantly affect performance and reliability. This study uses numerical simulations with the Full Cavitation Model and k-ε turbulence model to investigate the thermodynamic effects of cavitation in gear pump lubricating oil at varying temperatures. It focuses on the formation and evolution of cavitation vortex structures in the outlet bridge area. The simulations reveal significant heat exchange between liquid and vapor phases, causing a local temperature drop and a reduction in saturated vapor pressure, which suppresses cavitation development. As temperature increases, this effect diminishes due to the lower density of the hydraulic oil.
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Research context
OpenAlex topics: Cavitation Phenomena in Pumps · Hydraulic and Pneumatic Systems · Rocket and propulsion systems research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
College of Transportation Engineering, Tongji University, Shanghai 201804, China
School of Engineering and Design, Technical University of Munich, 80333 Munich, Germany
School of Mechanical Engineering, Beijing Institute of Technology, Chongqing Innovation Center, Chongqing 401120, China
Funding
Aviation Science Foundation · Technology Innovation Program of Beijing Institute of Technology
References (37)
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