An experimental investigation of natural convection wakes above a line heat source
作者： A.W Schorr , B Gebhart
DOI: 10.1016/0017-9310(70)90151-1
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摘要: Abstract The natural convection wake arising from a heated horizontal line source in liquids and air is investigated detail. three-dimensional effects for wire with length to diameter ratio of 250 observed water schlieren system. temperature field the plume above wires length-diameter ratios 1200 liquid silicone ( Pr = 6·7) determined using 20 cm Mach—Zehnder interferometer. Various heating rates are used yielding Grashof numbers, based on vertical distance plume, range 4 × 10 3 1·7 6 . Excellent agreement distributions theory found larger at number around 5 A regular swaying motion high number, caused fluctuations across entire width. applicability idea virtual point considered Discrepancies level centerline distribution this previous experimental work attributed finite diameter, non-infinite sources.
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