title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÑÑÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð»ÐµÑÐ° Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð´Ð¸ÑÐºÑÐµÑÐ½ÑÑ Ð²Ð¸Ñ ÑÐµÐ¹ Ð´Ð»Ñ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð¿ÑÐ»ÑÑÐ°ÑÐ¸Ð¹ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ð§Ð¡Ð
title: Multi-row centrifugal impeller optimization using the discreet-vortex method to reduce BPF pressure pulsations
Creators: name: ÐÐ¾Ð½Ð´ÑÐ°ÑÐ¾Ð², Ð.
name: ÐÐ»Ð¸Ð¼ÐµÐ½ÐºÐ¾, Ð.
name: Ð¢Ð¸Ð¼ÑÑÐµÐ², Ð¡.
name: ÐÐ¸ ÐÐ¶Ð°Ð²ÐµÐ½
name: "ÐÐ¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¼Ð°ÑÐ¸Ð½Ñ, Ð³Ð¸Ð´ÑÐ¾Ð¿ÑÐ¸Ð²Ð¾Ð´Ñ Ð¸ Ð³Ð¸Ð´ÑÐ¾Ð¿Ð½ÐµÐ²Ð¼Ð¾Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ°. Ð¡Ð¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ Ð¸ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ", Ð²ÑÐµÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ°Ñ Ð½Ð°ÑÑÐ½Ð¾-ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (2022; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2022
Subjects: ÐÐ°ÑÐ¾ÑÑ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½ÑÐµ
ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½Ð¾Ðµ ÑÐ°Ð±Ð¾ÑÐµÐµ ÐºÐ¾Ð»ÐµÑÐ¾
Ð´Ð¸ÑÐºÑÐµÑÐ½Ð¾-Ð²Ð¸Ñ ÑÐµÐ²Ð¾Ð¹ Ð¼ÐµÑÐ¾Ð´
Ð°ÐºÑÑÑÐ¸ÐºÐ¾-Ð²Ð¸Ñ ÑÐµÐ²Ð¾Ð¹ Ð¼ÐµÑÐ¾Ð´
centrifugal impeller
discreet-vortex method
acoustic-vortex method

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description: The blade passing frequency (BPF) pressure pulsations and noise is a well-known feature of centrifugal pumps. A high level of hydrodynamic vibration caused by pressure pulsations affects pumping unit reliability and service life.
The narrowband BPF noise violates environmental requirements. Optimizing the centrifugal impeller with an additional row of shortened blades is proposed using numerical studies by a discrete-vortex method in a two-dimensional formulation. According to this method, the liquid has a finite number of tangential discontinuities of velocity, which simulate blades and free vortex sheets caused by flow separation from the streamlined surfaces; a vortex source located at the origin of the polar coordinate system. The turbulent behavior of the flow in centrifugal impeller channels models using the original approach with sliding flow breakpoints. Knowing the velocity potential enables us to decide on the flow parameters and flow inhomogeneity at the blade cascade outlet and define boundary conditions for the wave equation relative to enthalpy oscillations. The latter is soled using the acoustic-vortex decomposition approach. The centrifugal impeller geometry that differs in the arrangement of additional shortened blades is studied using multi-criteria optimization.