Note on the Physical Basis of the Kutta Condition in Unsteady Two-Dimensional Panel Methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10320083" target="_blank" >RIV/00216208:11320/15:10320083 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1155/2015/708541" target="_blank" >http://dx.doi.org/10.1155/2015/708541</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1155/2015/708541" target="_blank" >10.1155/2015/708541</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Note on the Physical Basis of the Kutta Condition in Unsteady Two-Dimensional Panel Methods

Popis výsledku v původním jazyce

Force generation in avian and aquatic species is of considerable interest for possible engineering applications. The aim of this work is to highlight the theoretical and physical foundations of a new formulation of the unsteady Kutta condition, which postulates a finite pressure difference at the trailing edge of the foil. The condition, necessary to obtain a unique solution and derived from the unsteady Bernoulli equation, implies that the energy supplied for the wing motion generates trailing-edge vortices and their overall effect, which depends on themotion initial parameters, is a jet of fluid that propels the wing. The postulated pressure difference (the value of which should be experimentally obtained) models the trailing-edge velocity differencethat generates the thrust-producing jet. Although the average thrust values computed by the proposed method are comparable to those calculated by assuming null pressure difference at the trailing edge, the latter (commonly used) approach

Název v anglickém jazyce

Note on the Physical Basis of the Kutta Condition in Unsteady Two-Dimensional Panel Methods

Popis výsledku anglicky

Force generation in avian and aquatic species is of considerable interest for possible engineering applications. The aim of this work is to highlight the theoretical and physical foundations of a new formulation of the unsteady Kutta condition, which postulates a finite pressure difference at the trailing edge of the foil. The condition, necessary to obtain a unique solution and derived from the unsteady Bernoulli equation, implies that the energy supplied for the wing motion generates trailing-edge vortices and their overall effect, which depends on themotion initial parameters, is a jet of fluid that propels the wing. The postulated pressure difference (the value of which should be experimentally obtained) models the trailing-edge velocity differencethat generates the thrust-producing jet. Although the average thrust values computed by the proposed method are comparable to those calculated by assuming null pressure difference at the trailing edge, the latter (commonly used) approach

Druh

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

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Mathematical Problems in Engineering

ISSN

1024-123X

e-ISSN

—

Svazek periodika

neuveden

Číslo periodika v rámci svazku

November 2015

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000360235200001

EID výsledku v databázi Scopus

2-s2.0-84940116827