Numerical Study on Pressure Fluctuation in Electric Coolant Pump DOI Open Access
Lin Zhang,

Dongdong Zhu,

Yandong Gu

и другие.

Journal of Physics Conference Series, Год журнала: 2024, Номер 2854(1), С. 012049 - 012049

Опубликована: Окт. 1, 2024

Abstract Adjusting the flow rate of an electronic coolant pump (ECP) over a wide range can cause significant internal pressure fluctuations, leading to vibration and noise. This study uses numerical simulation compare fluctuations at backflow orifice within impeller ECP various rates. The creates periodic disturbances in inlet region. As increases, axial influence on decreases, reducing amplitude by up 7.9%. characteristic frequencies include blade passing frequency its first harmonic. Within impeller, fluctuation increases with both direction rate, encompassing rotational frequency, BPF, At low rates, overall variation inside shows opposite trend compared design high impact is significantly smaller than other offers insights that help optimize enhance their operational performance.

Язык: Английский

Novel Sealing Design for High-Speed Coolant Pumps: Impact on Energy Performance, Axial Thrust and Flow Field DOI
Yandong Gu, Qiyuan Zhu, Junjie Bian

и другие.

Energy, Год журнала: 2025, Номер unknown, С. 135511 - 135511

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Research on energy loss mechanism of the cooling pump for new energy vehicles DOI

Lufeng Zhu,

Fan Zhang, Kexin Chen

и другие.

Applied Thermal Engineering, Год журнала: 2025, Номер unknown, С. 126949 - 126949

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Experimental Investigation of the Impact of Blade Number on Energy Performance and Pressure Fluctuation in a High-Speed Coolant Pump for Electric Vehicles DOI
Yandong Gu, Dongcheng Wang, Qiliang Wang

и другие.

Energy, Год журнала: 2024, Номер unknown, С. 133925 - 133925

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

2
An advanced Polynomial Chaos Expansion method for sensitivity analysis of aero-engine fuel gear pumps DOI

Zhijie Zhao,

Xianwei Liu, Xuebo Zheng

и другие.

Physics of Fluids, Год журнала: 2024, Номер 36(7)

Опубликована: Июль 1, 2024

Global sensitivity analysis plays an important role in robustness optimization design of aero-engine fuel gear pumps to investigate how input parameters uncertainties contribute performances uncertainties. In this paper, inspired by the Leave-One-Out method, advanced Polynomial Chaos Expansion (PCE) method equipped with Adaptive both training Points and polynomial Order, denoted as APO-PCE, is proposed efficiently estimate variance-based indices. A novel active learning strategy developed for identifying optimal candidate sample point adaptively points simultaneously update order. Input parameters, including rotational speed, inlet pressure, outlet tip clearance, are reasonably characterized nine convenient sampling Gaussian variables probabilistic modeling Karhuben–Loève expansion. The results show that APO-PCE superior classical PCE pressure main factors supply flow field characteristics, while clearance uncertainty only affects loss at lower speed.

Язык: Английский

Процитировано

1
Numerical Study on Pressure Fluctuation in Electric Coolant Pump DOI Open Access
Lin Zhang,

Dongdong Zhu,

Yandong Gu

и другие.

Journal of Physics Conference Series, Год журнала: 2024, Номер 2854(1), С. 012049 - 012049

Опубликована: Окт. 1, 2024

Abstract Adjusting the flow rate of an electronic coolant pump (ECP) over a wide range can cause significant internal pressure fluctuations, leading to vibration and noise. This study uses numerical simulation compare fluctuations at backflow orifice within impeller ECP various rates. The creates periodic disturbances in inlet region. As increases, axial influence on decreases, reducing amplitude by up 7.9%. characteristic frequencies include blade passing frequency its first harmonic. Within impeller, fluctuation increases with both direction rate, encompassing rotational frequency, BPF, At low rates, overall variation inside shows opposite trend compared design high impact is significantly smaller than other offers insights that help optimize enhance their operational performance.

Язык: Английский

Процитировано

0