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Profile vortex shedding from low-speed axial fan rotor blades: a modelling overview

Daku, Gábor and Vad, János (2021) Profile vortex shedding from low-speed axial fan rotor blades: a modelling overview. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY. ISSN 0957-6509

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Abstract

This paper presents an overview of the characteristics potentially influencing the profile vortex shedding (PVS) phenomenon being relevant in noise and vibration of low-speed axial fan rotor blades. Dimensional analysis has been applied to explore the essential dimensionless quantities in a systematic and comprehensive manner. On this basis, limitations have been established, and simplifying assumptions have been set up in terms of PVS investigation. Groups of dimensionless characteristics playing a role in the semi-empirical model for predicting the PVS frequency were identified. The available semi-empirical model and its unique features related to the measurement evaluation methodology and Reynolds number dependence have been outlined. The presented comprehensive analysis provides guidelines from the perspective of transferability of the literature data on PVS from steady, isolated blade profile models to low-speed axial fan rotors. It also results in the formulation of objectives of future research related to PVS.

Item Type: Article
Additional Information: Funding Agency and Grant Number: Hungarian National Research, Development and Innovation (NRDI) Centre [NKFI K 129023]; NRDI FundNational Research, Development & Innovation Office (NRDIO) - Hungary [BME-IE-WAT, BME-NCS]; Ministry for Innovation and Technology; Gedeon Richter Talent Foundation; Gedeon Richter Plc., within the framework of the "Gedeon Richter PhD Scholarship" Funding text: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work has been supported by the Hungarian National Research, Development and Innovation (NRDI) Centre under contract No. NKFI K 129023. The research reported in this paper and carried out at BME has been supported by the NRDI Fund (TKP2020 IES, Grant No. BME-IE-WAT and TKP2020 NC, Grant No. BME-NCS) based on the charter of bolster issued by the NRDI Office under the auspices of the Ministry for Innovation and Technology. The contribution of Gabor DAKU has been supported by Gedeon Richter Talent Foundation (registered office: 1103 Budapest, Gyomrout 19-21.), established by Gedeon Richter Plc., within the framework of the "Gedeon Richter PhD Scholarship."
Uncontrolled Keywords: Dimensional analysis; fan noise; Vortex shedding; low-speed axial fan; moderate Reynolds number; blade vibration;
Subjects: T Technology / alkalmazott, műszaki tudományok > TJ Mechanical engineering and machinery / gépészmérnöki tudományok
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 08 Feb 2022 15:01
Last Modified: 08 Feb 2022 15:01
URI: http://real.mtak.hu/id/eprint/137505

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