The structure of turbulent flow behind the NACA 0012 airfoil at high angles of attack and low Reynolds number

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F21%3A43962850" target="_blank" >RIV/49777513:23210/21:43962850 - isvavai.cz</a>

Alternative codes found

RIV/61388998:_____/21:00559757

Result on the web

<a href="https://www.matec-conferences.org/articles/matecconf/pdf/2021/14/matecconf_pse2021_00034.pdf" target="_blank" >https://www.matec-conferences.org/articles/matecconf/pdf/2021/14/matecconf_pse2021_00034.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/matecconf/202134500034" target="_blank" >10.1051/matecconf/202134500034</a>

Result language

angličtina

Original language name

The structure of turbulent flow behind the NACA 0012 airfoil at high angles of attack and low Reynolds number

Original language description

This paper shows the results of a study of the turbulent structure behind the NACA 0012 airfoil. During the experiment, the flow velocity was 20 m·s−1. That corresponds the Reynolds number 1.3·105. The point behind the trailing edge was chosen for experimental studies. Measurements were performed at six angles of attack α = 0°, 15°, 30°, 45°, 60°, 75° and various cases of positioning the measuring section. Namely at a constant crosssection and a constant distance behind the airfoil. The NetScanner pressure system and hot-wire technique were used for experimental studies. The obtained data allowed us to investigate the wake topology. The average velocity and standard deviation distributions are clearly grouped depending on the angle of attack. Thus, flowing around the airfoil is better up to α ≤15°. Distributions by power density and dissipation spectra also have a similar grouping tendency. Finally, we investigated the turbulent structure according to the research program. We found that at α ≥45°, depending on the measurement case, there is a clear difference in the distribution of standard deviation, Eulerian length scale, Taylor micro-scale, and Reynolds number based on the Taylor micro-scale. The obtained values at the constant distance, in contrast to the constant cross-section, are reduced.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20304 - Aerospace engineering

Project

<a href="/en/project/TH02020057" target="_blank" >TH02020057: Turbine profile cascades for supersonic flow fields</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

20th Conference on Power System Engineering

ISBN

—

ISSN

2261-236X

e-ISSN

2261-236X

Number of pages

10

Pages from-to

1-10

Publisher name

EDP Sciences

Place of publication

Pilsen

Event location

Pilsen

Event date

Sep 7, 2021

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000748890700034