Measurement of the Detailed Heat Transfer Coefficient in the Rotating Dimpled Rectangular Channel

Autor:	Seoung Duck Park, Chang Soo Jeon, Jae Su Kwak, Youngmin Jun, Ki Seon Lee
Rok vydání:	2009
Předmět:	Materials science Aspect ratio business.industry Reynolds number Heat transfer coefficient Mechanics Rotation symbols.namesake Optics Dimple Thermal symbols Hydraulic diameter business Rotation number
Zdroj:	Journal of Fluid Machinery. 12:51-56
ISSN:	1226-9883
DOI:	10.5293/kfma.2009.12.1.051
Popis:	The detailed heat transfer coefficient on a rotating dimpled channel were measured using the transient liquid crystal technique. The channel height to dimple diameter was 2, dimple center distance to dimple diameter was 1.5 and channel aspect ratio was 4. Tested Reynolds number based on the channel hydraulic diameter was varied from 15000 to 35000 and corresponding rotation number was ranged from 0.026 to 0.057. Results showed that the Coriolis force by rotation enhanced the heat transfer coefficient on the trailing surface. As the Reynolds number increased, i.e. rotation number decreased, the heat transfer coefficient increased and the thermal performance factor decreased.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a9c1a2272c949b2fb8b0ae86c24315f8 https://doi.org/10.5293/kfma.2009.12.1.051 Zobrazit plný text záznamu