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Aerodynamic characteristics at low Reynolds numbers of several heat-exchanger configurations for wind-tunnel use (1979)

Igoe, W. B. ; Johnson, W. G., Jr.

In: CASI

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Publication Date: 2019-06-27

Description: In response to design requirements of the National Transonic Facility, aerodynamic tests were conducted to determine the pressure-drop, flow-uniformity, and turbulence characteristics of various heat-exchanger configurations as a function of Reynolds number. Data were obtained in air with an indraft flow apparatus operated at ambient temperature and pressure. The unit Reynolds number of the tests varied from about 0.06 x 10 to 6th power to about 1.3 x 10 to 6th power per meter. The test models were designed to represent segments of full-scale tube bundles and included bundles of round tubes with plate fins in both staggered and inline tube arrays, round tubes with spiral fins, elliptical tubes with plate fins, and an inline grouping of tubes with segmented fins.

Keywords: AERODYNAMICS

Type: NASA-TM-80188 , L-13307

Format: application/pdf

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