An approximate model of the dynamics and heat transfer of an impact cylindrical ideal liquid jet.

Autor:	Uryukov, B., Belik, V., Tkachenko, G.
Předmět:	HEAT transfer JETS (Fluid dynamics) IMPACT (Mechanics) APPROXIMATION theory HEAT exchangers MATHEMATICAL models BOUNDARY layer (Aerodynamics)
Zdroj:	Journal of Engineering Physics & Thermophysics; Mar2012, Vol. 85 Issue 2, p317-323, 7p
Abstrakt:	A jet model based on approximations of velocities, satisfying the continuity equation, and on the integral momentum equation is presented. The solution for the jet dynamics turned out to be nonmonotonic: as an obstacle recedes over a distance larger than a certain critical one, the jet escapes from the receiver nozzle rectilinearly and remains unchanged until the distance to the obstacle becomes equal to the critical one, whereupon the jet begins to spread. The heat transfer law has been determined on the basis of the momentum and boundary layer energy equations written in an integral form. They were solved by the Squire method. It is shown that with decrease in the distance to the obstacle, if it is smaller than the critical one, the Nusselt number at the stagnation point increases. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink