Experimental Investigation of Pressure Drop Characteristics in A Square Channel Using Detached Ribs as Vortex Generators
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 10
Abstract
In recent day it is very necessary to find heat transfer characteristics of heat exchanger, heat exchanger as an important equipment widely used in day to day life, like in industry, home appliances, gas turbine, transportation, power production, in aircraft etc. the improvement of heat transfer performance of heat exchanger can done by using insertion of vortex generators in a square channel. The experimental study is conducted to examine the pressure drop characteristics in a square duct with different geometrical configuration of detached ribs, Detached Ribs as vortex generators are inserted 90˚ in a square duct having different aspect ratio (AR) of 2, 3, 5. The effect of width, pitch ratio (P/H) of inserting vortex generator, flow direction and aspect ratio of duct are examined for Reynolds numbers (Re) based on hydraulic diameter of square duct Dh, and it is in the range of 8000 to 24000. The results shows if pitch to height increases friction factor ratio decreases by 38.98% , if Reynolds number increases , 9.42% time friction factor ratio increases , if aspect ratio increases friction factor ratio decrease by 90.03%. The experiment is repeated for different AR of vortex generators 2,3,4,5, pitch ratio (P/h), width 15, 10, 6mm for different Re = 8000, 12000, 16000, 20000, 24000.
Authors and Affiliations
Harish Muki, Anandkumar S Malipatil
Keywords
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