详情

原文传递 Preliminary Investigation of Ice Shape Sensitivity to Parameter Variations.

题名：	Preliminary Investigation of Ice Shape Sensitivity to Parameter Variations.
作者：	Miller, Dean R.; Potapczuk, Mark G.; Langhals, Tammy J.
关键词：	Ice-formation; Sensitivity-; *Wind-tunnel-tests.;Airfoils-; Drop-size; Drops-Liquids; Moisture-content; Simulation-; Viscous-flow; Feasibility-analysis.
摘要：	A parameter sensitivity study was conducted at the NASA Glenn Research Center's Icing Research Tunnel (IRT) using a 36 in. chord (0.91 m) NACA-0012 airfoil. The objective of this preliminary work was to investigate the feasibility of using ice shape feature changes to define requirements for the simulation and measurement of SLD icing conditions. It was desired to identify the minimum change (threshold) in a parameter value, which yielded an observable change in the ice shape. Liquid Water Content (LWC), drop size distribution (MVD), and tunnel static temperature were varied about a nominal value, and the effects of these parameter changes on the resulting ice shapes were documented. The resulting differences in ice shapes were compared on the basis of qualitative and quantitative criteria (e.g., mass, ice horn thickness, ice horn angle, icing limits, and iced area). This paper will provide a description of the experimental method, present selected experimental results, and conclude with an evaluation of these results, followed by a discussion of recommendations for future research.
报告类型：	科技报告