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Convective Heat Transfer from Castings of Ice Roughened Surfaces in Horizontal Flight
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Author and Affiliation:
Dukhan, Nihad(Toledo Univ., OH., United States);
Vanfossen, G. James, Jr.(NASA Lewis Research Center, Cleveland, OH, United States);
Masiulaniec, K. Cyril(Toledo Univ., OH., United States);
Dewitt, Kenneth J.(Toledo Univ., OH., United States)
Abstract: A technique was developed to cast frozen ice shapes that had been grown on a metal surface. This technique was applied to a series of ice shapes that were grown in the NASA Lewis Icing Research Tunnel on flat plates. Eight different types of ice growths, characterizing different types of roughness, were obtained from these plates, from which aluminum castings were made. Test strips taken from these castings were outfitted with heat flux gages, such that when placed in a dry wind tunnel, they could be used to experimentally map out the convective heat transfer coefficient in the direction of flow from the roughened surfaces. The effects on the heat transfer coefficient for parallel flow, which simulates horizontal flight, were studied. The results of this investigation can be used to help size heaters for wings, helicopter rotor blades, jet engine intakes, etc., or de-icing for anti-icing applications where the flow is parallel to the iced surface.
Publication Date: Nov 01, 1995
Document ID:
19960008033
(Acquired Feb 06, 1996)
Accession Number: 96N15199
Subject Category: FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number: NASA-TM-107109, NAS 1.15:107109, E-10010, NIPS-95-06275
Document Type: Conference Paper
Publisher Information: United States
Meeting Information: International Icing Symposium 1995; 18-21 Sep. 1995; Montreal; Canada
Meeting Sponsor: AHS and SAE
Contract/Grant/Task Num: NAG3-72; RTOP 505-68-10
Financial Sponsor: NASA; Washington, DC, United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 24p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: AIRCRAFT SAFETY; CONVECTIVE HEAT TRANSFER; DEICING; HEAT TRANSFER COEFFICIENTS; HORIZONTAL FLIGHT; ICE FORMATION; ICE PREVENTION; METAL SURFACES; PARALLEL FLOW; SURFACE ROUGHNESS; WIND TUNNEL TESTS; ALUMINUM; CASTINGS; ENGINE INLETS; HEAT FLUX; WIND TUNNELS; WINGS
Imprint And Other Notes: Presented at the International Icing Symposium 1995, Montreal, Canada, United States, 18-21 Sep. 1995; sponsored by AHS and SAE
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