Investigation of flow around and in wake of a heated circular cylinder at moderate Reynolds numbers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00531346" target="_blank" >RIV/68378297:_____/20:00531346 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27120/20:10245490

Výsledek na webu

<a href="https://doi.org/10.1115/1.4047833" target="_blank" >https://doi.org/10.1115/1.4047833</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4047833" target="_blank" >10.1115/1.4047833</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of flow around and in wake of a heated circular cylinder at moderate Reynolds numbers

Popis výsledku v původním jazyce

The flow around a heated circular cylinder and the wake behind it were studied in wind tunnel flow using two methods of anemometry, i.e. particle image velocimetry (PIV) and constant temperature anemometry (CTA) with a special technique using a rotating slanted hot-wire probe. The Reynolds number ranged from 2000 to 20 000 and the cylinder wall temperatures varied between 27 °C and 177 °C. The wake is characterized by mean wind and fluctuation contour maps. Significant changes in wake patterns were observed while the cylinder was being heated, thus increasing its wall temperatures at low Reynolds numbers. At higher Reynolds numbers, the effects of cylinder heating on wake properties were negligible. The research fills a gap observed in the literature for a certain combination of velocity, cylinder aspect ratio and cylinder surface temperature.

Název v anglickém jazyce

Investigation of flow around and in wake of a heated circular cylinder at moderate Reynolds numbers

Popis výsledku anglicky

The flow around a heated circular cylinder and the wake behind it were studied in wind tunnel flow using two methods of anemometry, i.e. particle image velocimetry (PIV) and constant temperature anemometry (CTA) with a special technique using a rotating slanted hot-wire probe. The Reynolds number ranged from 2000 to 20 000 and the cylinder wall temperatures varied between 27 °C and 177 °C. The wake is characterized by mean wind and fluctuation contour maps. Significant changes in wake patterns were observed while the cylinder was being heated, thus increasing its wall temperatures at low Reynolds numbers. At higher Reynolds numbers, the effects of cylinder heating on wake properties were negligible. The research fills a gap observed in the literature for a certain combination of velocity, cylinder aspect ratio and cylinder surface temperature.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA19-04695S" target="_blank" >GA19-04695S: Aerodynamická odezva válce s povrchovou drsností v kritickém a přechodovém režimu Reynoldsova čísla</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Heat Transfer

ISSN

0022-1481

e-ISSN

—

Svazek periodika

142

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

111801

Kód UT WoS článku

000598945400003

EID výsledku v databázi Scopus

2-s2.0-85097412779