Flow Visualization of Flat and Curved Trapezoidal Winglet Vortex Generator in Fin-and-Tube Channel in Inline Arrangement

Autor:	Mazlan Abdul Wahid, Natrah Kamaruzaman, Ummikalsom Abidin, Aminuddin Saat, Mohd Fahmi Md Salleh, Mohsin Mohd Sies
Rok vydání:	2017
Předmět:	Flow visualization Materials science business.industry Mechanical Engineering Flow (psychology) Reynolds number Structural engineering Mechanics Vortex generator Wake Computational fluid dynamics Fin (extended surface) symbols.namesake symbols Wingtip device business
Zdroj:	International Review of Mechanical Engineering (IREME). 11:101
ISSN:	1970-8742 1970-8734
DOI:	10.15866/ireme.v11i2.10392
Popis:	In this study, a flow visualization experiment using the dye injection technique was conducted. Visual observation of the flow characteristics across the scaled up fin-and-tube heat exchanger (FTHE) channel model with and without trapezoidal winglet vortex generator (TWVG) were presented. Four cases of FTHE channel in inline tube arrangement were examined with TWVG at different geometries and arrangements, as well as a case without the vortex generator. The two TWVG geometries used in this study were a flat trapezoidal winglet (FTW) and a curved trapezoidal winglet (CTW) either arranged in common flow up (CFU) or common flow down (CFD) compositions. The Reynolds number (Re) used ranged from 500 to 2500. It was found that with the introduction of TWVG in the FTHE channel, the wake region size behind tubes reduced compared to the baseline case. However, the formation of an additional wake region behind the TWVG was also observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a6c86721dd1913e58c6a710d931a8bc https://doi.org/10.15866/ireme.v11i2.10392 Zobrazit plný text záznamu