- Tytuł:
- Helicity of Convective Flows from Localized Heat Source in a Rotating Layer
- Autorzy:
-
Sukhanovskii, A.
Evgrafova, A.
Popova, E. - Powiązania:
- https://bibliotekanauki.pl/articles/139611.pdf
- Data publikacji:
- 2017
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
flight dynamics
system identification
output error method
maximum likelihood
unstable systems
tiltrotor
dynamika lotu
identyfikacja systemu
metoda błędu wyjścia
maksymalne prawdopodobieństwo
systemy niestabilne
zmiennopłat - Opis:
- 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.
- Źródło:
-
Archive of Mechanical Engineering; 2017, LXIV, 2; 177-188
0004-0738 - Pojawia się w:
- Archive of Mechanical Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł