LES study of the precessing vortex core mitigation by radial injection in a Francis turbine air model

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LES study of the precessing vortex core mitigation by radial injection in a Francis turbine air model. / Lutchenko, I. I.; Palkin, E. V.; Mullyadzhanov, R. I.

In: E3S Web of Conferences, Vol. 578, 01018, 14.10.2024.

Research output: Contribution to journal › Conference article › peer-review

BibTeX

@article{8486fb75ea694e7e8b5efe16877db13e,

title = "LES study of the precessing vortex core mitigation by radial injection in a Francis turbine air model",

abstract = "This work is devoted to a numerical study of the precessing vortex core (PVC) mitigation in a Francis turbine air model. The approach utilized to suppress the PVC, injection of radial jets, was based on influencing flow zones that are most susceptible to control. The analysis of the time-averaged velocity fields revealed extending of a recirculation zone. The time-averaged pressure pulsations in the flow decreased significantly, that indicates a mitigation of the PVC dynamics. Spectra of the azimuthally decomposed pressure pulsations signal demonstrated a suppression of the m = 1 mode by 25% and m = 2 by 40%, however, it does not coincide with the control efficiency in experimental work of I. Litvinov et al. In further investigations it is planned to vary the spatial orientation of the injection jets in order to achieve more effective PVC suppression.",

author = "Lutchenko, {I. I.} and Palkin, {E. V.} and Mullyadzhanov, {R. I.}",

note = "The work is supported by the state contract with IT SB RAS (FWNS-2022-0009).; Всероссийская конференция с международным участием «XL Сибирский теплофизический семинар», посвященная 110-летию со дня рождения академика С.С. Кутателадзе и 300-летию Российской академии наук, СТС-40 ; Conference date: 20-08-2024 Through 23-08-2024",

year = "2024",

month = oct,

day = "14",

doi = "10.1051/e3sconf/202457801018",

language = "English",

volume = "578",

journal = "E3S Web of Conferences",

issn = "2555-0403",

publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - LES study of the precessing vortex core mitigation by radial injection in a Francis turbine air model

AU - Lutchenko, I. I.

AU - Palkin, E. V.

AU - Mullyadzhanov, R. I.

N1 - Conference code: 40

PY - 2024/10/14

Y1 - 2024/10/14

N2 - This work is devoted to a numerical study of the precessing vortex core (PVC) mitigation in a Francis turbine air model. The approach utilized to suppress the PVC, injection of radial jets, was based on influencing flow zones that are most susceptible to control. The analysis of the time-averaged velocity fields revealed extending of a recirculation zone. The time-averaged pressure pulsations in the flow decreased significantly, that indicates a mitigation of the PVC dynamics. Spectra of the azimuthally decomposed pressure pulsations signal demonstrated a suppression of the m = 1 mode by 25% and m = 2 by 40%, however, it does not coincide with the control efficiency in experimental work of I. Litvinov et al. In further investigations it is planned to vary the spatial orientation of the injection jets in order to achieve more effective PVC suppression.

AB - This work is devoted to a numerical study of the precessing vortex core (PVC) mitigation in a Francis turbine air model. The approach utilized to suppress the PVC, injection of radial jets, was based on influencing flow zones that are most susceptible to control. The analysis of the time-averaged velocity fields revealed extending of a recirculation zone. The time-averaged pressure pulsations in the flow decreased significantly, that indicates a mitigation of the PVC dynamics. Spectra of the azimuthally decomposed pressure pulsations signal demonstrated a suppression of the m = 1 mode by 25% and m = 2 by 40%, however, it does not coincide with the control efficiency in experimental work of I. Litvinov et al. In further investigations it is planned to vary the spatial orientation of the injection jets in order to achieve more effective PVC suppression.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85211935180&origin=inward&txGid=dfac815527ae9f0ba07be188afd787ff

UR - https://www.mendeley.com/catalogue/edc7effd-ae9e-319d-8d61-71ef91f2077f/

U2 - 10.1051/e3sconf/202457801018

DO - 10.1051/e3sconf/202457801018

M3 - Conference article

VL - 578

JO - E3S Web of Conferences

JF - E3S Web of Conferences

SN - 2555-0403

M1 - 01018

T2 - Всероссийская конференция с международным участием «XL Сибирский теплофизический семинар», посвященная 110-летию со дня рождения академика С.С. Кутателадзе и 300-летию Российской академии наук

Y2 - 20 August 2024 through 23 August 2024

ER -

ID: 61244123