On the need for compatibility of thermal and mechanical data in flow problems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10099228" target="_blank" >RIV/00216208:11320/11:10099228 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijengsci.2011.01.008" target="_blank" >http://dx.doi.org/10.1016/j.ijengsci.2011.01.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijengsci.2011.01.008" target="_blank" >10.1016/j.ijengsci.2011.01.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the need for compatibility of thermal and mechanical data in flow problems

Popis výsledku v původním jazyce

In this short paper, we discuss an important compatibility condition which usually goes unmentioned when discussing classical flow problems in fluid mechanics. While results are presented from a supposedly purely mechanical perspective, in reality the problems need to be cast within a fully thermodynamic framework for them to make sense. This subtle issue warrants discussion and forms the subject matter of this short paper. It is shown that many classical solutions would not be possible if the problem is not cast within a thermodynamic framework with critical boundary conditions being specified for appropriate thermal quantities. While that this is so from a physical standpoint is quite obvious, we show here for the first time, that there has to be a certain compatibility between the rate at which work is done and the heat flux at the boundary.

Název v anglickém jazyce

On the need for compatibility of thermal and mechanical data in flow problems

Popis výsledku anglicky

In this short paper, we discuss an important compatibility condition which usually goes unmentioned when discussing classical flow problems in fluid mechanics. While results are presented from a supposedly purely mechanical perspective, in reality the problems need to be cast within a fully thermodynamic framework for them to make sense. This subtle issue warrants discussion and forms the subject matter of this short paper. It is shown that many classical solutions would not be possible if the problem is not cast within a thermodynamic framework with critical boundary conditions being specified for appropriate thermal quantities. While that this is so from a physical standpoint is quite obvious, we show here for the first time, that there has to be a certain compatibility between the rate at which work is done and the heat flux at the boundary.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

International Journal of Engineering Science

ISSN

0020-7225

e-ISSN

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Svazek periodika

49

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

537-543

Kód UT WoS článku

000291137000001

EID výsledku v databázi Scopus

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