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Hot-Wire Investigation of Turbulence Topology behind Blades at Different Shape Qualities
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SYSNO ASEP 0556228 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Hot-Wire Investigation of Turbulence Topology behind Blades at Different Shape Qualities Tvůrce(i) Yanovych, Vitalii (UT-L)
Duda, D. (CZ)
Uruba, Václav (UT-L) RID, ORCID
Tomášková, T. (CZ)Číslo článku 522 Zdroj.dok. Processes. - : MDPI
Roč. 10, č. 3 (2022)Poč.str. 22 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova asymmetric airfoil ; hot-wire ; shape inaccuracies ; the structure of turbulent ; wake topology ; aerodynamic characteristics Vědní obor RIV BK - Mechanika tekutin Obor OECD Applied mechanics Způsob publikování Open access Institucionální podpora UT-L - RVO:61388998 UT WOS 000774237400001 EID SCOPUS 85126518599 DOI 10.3390/pr10030522 Anotace The scope of this paper is to perform a detailed experimental investigation of the shape error effect on the turbulence evolution behind NACA 64-618 airfoil. This airfoil is 3D-printed with predefined typical shape inaccuracies. A high-precision optical 3D scanner was used to assess the shape and surface quality of the manufactured models. The turbulent flow was studied using hot-wire anemometry. The developed force balance device was provided to measure the aerodynamic characteristics of the airfoil. Experimental studies were carried out for three angles of attack, +10°, 0°, −10°, and different chord-based Reynolds numbers from 5.3 × 104 to 2.1 × 105. The obtained results show that the blunt trailing edge and rough surface decline the aerodynamic performance of the blades. In addition, the experimental results revealed a strong sensitivity of the Taylor microscale Reynolds number to the type of shape inaccuracy, especially at Re ≈ 1.7 × 105. We also discuss the evolution of the Reynolds stress components, the degree of flow anisotropy, and the power spectrum distributions depending on the airfoil inaccuracies. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2023 Elektronická adresa https://mdpi-res.com/d_attachment/processes/processes-10-00522/article_deploy/processes-10-00522-v3.pdf?version=1646878698
Počet záznamů: 1