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- W4384204401 abstract "Abstract Lumped parameter modeling is a consolidated technique for analyzing the fluid dynamic behavior of positive displacement machines, owing to their computational swiftness and the ease of integrating other physical domains affecting the operation of the machine. With some very limited exceptions, this modeling technique typically neglects fluid inertia and momentum effects. This paper proposes an approach to study the effects of fluid inertia affecting the pressurization and depressurization of the tooth space volumes of an external gear pump. The approach is based on considering the fluid inertia in the pressurization grooves and inside the control volumes with a peculiar subdivision. Further, frequency-dependent friction is also modeled to provide realistic damping of the fluid inside these channels. Validation of the model has been performed by comparing the lumped parameter model with a full three-dimensional Navier–Stokes solver. The quantities compared, such as tooth space volume pressures and outlet volumetric flow rate, show a good match between the two approaches for varying operating speeds. A comparison with the experiments supports the modeling approach as well. The paper finally, also discusses which operating conditions and geometries play a significant role that governs the necessity to model such fluid inertia effects in the first place." @default.
- W4384204401 created "2023-07-14" @default.
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- W4384204401 date "2023-08-01" @default.
- W4384204401 modified "2023-09-25" @default.
- W4384204401 title "Simulation and Validation of Fluid Inertia Effects in External Gear Machines Using Lumped Parameter Modeling" @default.
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- W4384204401 doi "https://doi.org/10.1115/1.4062957" @default.
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