Modified Navier Stokes Equation and new Law of the Wall for Turbulent Flows in Flat-Plate Systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F10%3A00006118" target="_blank" >RIV/44555601:13520/10:00006118 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modified Navier Stokes Equation and new Law of the Wall for Turbulent Flows in Flat-Plate Systems

Popis výsledku v původním jazyce

It is well known that in a turbulent flow between two parallel flat plates, the horizontal mean velocity varies logarithmically with height (the so-called 'log-law-of-the-wall'). The law of the wall is a description of the mean velocity profile in wall bounded flows and has been regarded as one of the underpinning doctrines in the turbulence community for more than half a century. Much of our understanding in wall turbulence has been based on the continuum Navier-Stokes equation. More recently, following studies with a post-Navier-Stokes equation [1], we apply a modified Navier-Stokes equation to the flow of turbulent fluid between two parallel flat plates. We extend the analysis to the turbulent flow along a single wall and compare the results with the established controversial von Karman logarithmic law of the wall [2] and the Barenblatt-Chorin power law [12]. We find velocity profiles and velocity time evolution of a turbulent system that cannot be reproduced from the classical Navi

Název v anglickém jazyce

Modified Navier Stokes Equation and new Law of the Wall for Turbulent Flows in Flat-Plate Systems

Popis výsledku anglicky

It is well known that in a turbulent flow between two parallel flat plates, the horizontal mean velocity varies logarithmically with height (the so-called 'log-law-of-the-wall'). The law of the wall is a description of the mean velocity profile in wall bounded flows and has been regarded as one of the underpinning doctrines in the turbulence community for more than half a century. Much of our understanding in wall turbulence has been based on the continuum Navier-Stokes equation. More recently, following studies with a post-Navier-Stokes equation [1], we apply a modified Navier-Stokes equation to the flow of turbulent fluid between two parallel flat plates. We extend the analysis to the turbulent flow along a single wall and compare the results with the established controversial von Karman logarithmic law of the wall [2] and the Barenblatt-Chorin power law [12]. We find velocity profiles and velocity time evolution of a turbulent system that cannot be reproduced from the classical Navi

Druh

C - Kapitola v odborné knize

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

<a href="/cs/project/1M0554" target="_blank" >1M0554: Pokročilé sanační technologie a procesy</a><br>

Návaznosti

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

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Quantum nature of turbulence

ISBN

978-1-61728-930-9

Počet stran výsledku

10

Strana od-do

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Počet stran knihy

242

Název nakladatele

Nova Science Publishers, Inc.

Místo vydání

New York

Kód UT WoS kapitoly

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