Heat transfer at the stagnation point of a free-falling impinging liquid jet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00565781" target="_blank" >RIV/61388998:_____/22:00565781 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1134/S0869864322040047" target="_blank" >https://link.springer.com/article/10.1134/S0869864322040047</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S0869864322040047" target="_blank" >10.1134/S0869864322040047</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heat transfer at the stagnation point of a free-falling impinging liquid jet

Popis výsledku v původním jazyce

The results of an analytical study of unsteady heat transfer in the vicinity of a stagnation point of an axisymmetric impinging liquid jet are presented. A self-similar solution is obtained, which allows the analysis of heat transfer behavior as a function of the Reynolds number, distance from the nozzle to the surface, and characteristic time. The behavior of the Nusselt number for the solution in asymptotically limiting cases is shown: the Froude number Fr >> 1 (small distances from the nozzle to the barrier) and Fr << 1 (large distances). It is noted that the effect of the Froude number can be quite significant and should be taken into account when predicting heat transfer. Significant intensification of heat transfer is shown for a pulsed impinging jet at short pulse durations.

Název v anglickém jazyce

Heat transfer at the stagnation point of a free-falling impinging liquid jet

Popis výsledku anglicky

The results of an analytical study of unsteady heat transfer in the vicinity of a stagnation point of an axisymmetric impinging liquid jet are presented. A self-similar solution is obtained, which allows the analysis of heat transfer behavior as a function of the Reynolds number, distance from the nozzle to the surface, and characteristic time. The behavior of the Nusselt number for the solution in asymptotically limiting cases is shown: the Froude number Fr >> 1 (small distances from the nozzle to the barrier) and Fr << 1 (large distances). It is noted that the effect of the Froude number can be quite significant and should be taken into account when predicting heat transfer. Significant intensification of heat transfer is shown for a pulsed impinging jet at short pulse durations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Thermophysics and Aeromechanics

ISSN

0869-8643

e-ISSN

1531-8699

Svazek periodika

29

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

6

Strana od-do

513-518

Kód UT WoS článku

000889060400004

EID výsledku v databázi Scopus

2-s2.0-85142731664