Naslov
Effects of strong convection on the cooling process for a long or thin pipe

Autori
Marušić, Sanja ; Marušić-Paloka, Eduard ; Pažanin, Igor

Izvornik
Comptes rendus. Mécanique (1631-0721) 336 (2008), 6; 493-499

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Heat transfer ; Heat conduction ; Asymptotic analysis ; High convection

Sažetak
In this Note a heat flow through a thin pipe filled with fluid is studied. The pipe is cooled by the exterior medium. Depending on the ratio between the pipe’ s thickness ε and the Reynolds number Reε , we obtain three different macroscopic models via rigorous asymptotic analysis. For small Reε the fluid in the pipe is perfectly cooled, i.e. it assumes the temperature of the surrounding medium. For large Reε , the fluid is not cooled at all, i.e. it maintains the same temperature as it had when it entered the pipe. Between those two cases there is a critical value of Reε when the macroscopic model is described by an ODE keeping the effects of the surrounding medium as well as the entering temperature.

Izvorni jezik
Engleski

Znanstvena područja
Matematika

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