Abstract
Generated rotor (gerotor) pumps have commercial applications in oil supply pumps and compressors. Unfortunately, they produce an excessive amount of noise while in operation. The present study focuses on reducing the noise, which is caused due to pressure oscillations in the fluid, and vibration levels when a gerotor pump is in operation. Three-dimensional numerical simulations were performed on the gerotor pump using the dynamic mesh method. The flow field was simulated using the commercial software Ansys Fluent. The mesh motion was provided in the form of a user-defined function. Computational fluid dynamics analysis was performed for different combinations of delivery pipe length and diameter, and their effects on delivery pressure were analyzed. It is observed from numerical results that the pressure oscillations are reduced around 20 % by increasing volume of port or pipe region, which in turn reduces the noise levels. It is concluded that the pressure oscillations during the fluid flow are highly dependent on the volume of the delivery pipe.
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Abbreviations
- P :
-
Pressure
- rpm :
-
Revolutions per minute
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Acknowledgments
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2022R1F1A1061903).
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Kamran Nazir received his M.Sc. (Eng) in Mechanical Engineering from National University of Sciences & Technology, Pakistan. He received his Ph.D. in Mechanical Engineering from Kyungpook National University, South Korea. He works in the Mechanical Engineering Department at National University of Technology (NUTECH), Islamabad, Pakistan. His research interests include multiphase flow, CFD, and building environment.
Chang Hyun Sohn received his M.Sc. (Eng) in Mechanical Engineering in 1985 from KAIST. He also received his Ph.D. in Mechanical Engineering in 1991 from KAIST. He is a Professor of Mechanical Engineering, Kyungpook National University, since 1994. His research interests include CFD, PIV, flow-induced vibration, and thermal-hydraulics in the mechanical engineering field.
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Nazir, K., Sohn, C.H. Reduction of delivery pressure fluctuations in a gerotor pump. J Mech Sci Technol 38, 4161–4166 (2024). https://doi.org/10.1007/s12206-024-0713-9
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DOI: https://doi.org/10.1007/s12206-024-0713-9