Helicity of Convective Flows from Localized Heat Source in a Rotating Layer

• Autorzy: Sukhanovskii A. , Evgrafova A. , Popova E.

Identyfikatory

DOI

10.1515/meceng-2017-0011

• Języki publikacji: EN

Abstrakty

EN

Experimental and numerical study of the steady-state cyclonic vortex from isolated heat source in a rotating fluid layer is described. The structure of laboratory cyclonic vortex is similar to the typical structure of tropical cyclones from observational data and numerical modelling including secondary flows in the boundary layer. Differential characteristics of the flow were studied by numerical simulation using CFD software Flow Vision. Helicity distribution in rotating fluid layer with localized heat source was analysed. Two mechanisms which play role in helicity generation are found. The first one is the strong correlation of cyclonic vortex and intensive upward motion in the central part of the vessel. The second one is due to large gradients of velocity on the periphery. The integral helicity in the considered case is substantial and its relative level is high.

Słowa kluczowe

EN

flight dynamics; system identification; output error method; maximum likelihood; unstable systems; tiltrotor

PL

dynamika lotu; identyfikacja systemu; metoda błędu wyjścia; maksymalne prawdopodobieństwo; systemy niestabilne; zmiennopłat

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. LXIV, nr 2
• Strony: 177--188
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Sukhanovskii A.

• Institute of Continuous Media Mechanics – Academ. Korolyov, 1, Perm, 614013, Russia

autor

Evgrafova A.

• Institute of Continuous Media Mechanics – Academ. Korolyov, 1, Perm, 614013, Russia

autor

Popova E.

• Institute of Continuous Media Mechanics – Academ. Korolyov, 1, Perm, 614013, Russia

Bibliografia

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Uwagi

EN

This work was supported by the Russian Science Foundation (grant No. 16-41-02012).