Flow visualisation in inclined louvered fins

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Experimental Thermal and Fluid Science

DOI:https://doi.org/10.1016/J.EXPTHERMFLUSCI.2009.01.003· OSTI ID:21169007

T'Joen, C; De Paepe, M ^[1]; Jacobi, A ^[2]

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1. Department of Flow, Heat and Combustion Mechanics, Ghent University-UGent, Sint-Pietersnieuwstraat 41, 9000 Gent (Belgium)
2. Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801 (United States)

In this study the flow within an interrupted fin design, the inclined louvered fin, is investigated experimentally through visualisation. The inclined louvered fin is a hybrid of the offset strip fin and standard louvered fin, aimed at improved performance at low Reynolds numbers for compact heat exchangers. The flow behaviour is studied in six geometrically different configurations over a range of Reynolds numbers and quantified using the concept of 'fin angle alignment factor'. The transition from steady laminar to unsteady flow was studied in detail. The fin geometry had a very large impact on the transitional flow behaviour, especially on vortex shedding. (author)

• OSTI ID: 21169007
• Journal Information: Experimental Thermal and Fluid Science, Journal Name: Experimental Thermal and Fluid Science Journal Issue: 4 Vol. 33; ISSN 0894-1777; ISSN ETFSEO
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
ALIGNMENT
CONFIGURATION
FINS
FLOW VISUALIZATION
HEAT EXCHANGERS
Inclined louvered fins
LAMINAR FLOW
PERFORMANCE
REYNOLDS NUMBER
SHAPE
STEADY FLOW
UNSTEADY FLOW
VORTICES