Relaxation of turbulent energy during gas flow into a vacuum
S.A. Novopashin1,2, V.V. Kalyada1
1Novosibirsk State Univeristy, Novosibirsk, Russia
2Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: Hagen-Poiseuille flow, dissipation of turbulent energy, gas flow into a vacuum
Abstract
Experimental results on the temperature distribution in a jet of nitrogen flowing from a long pipe into a vacuum under laminar and turbulent flow conditions are presented. A temperature increase downstream was observed under turbulent flow conditions compared to laminar flow conditions. It is concluded that the temperature increase is associated with the turbulent energy relaxation.
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