空气动力学学报2016，Vol.34Issue(6)：697-703,7.DOI:10.7638/kqdlxxb-2016.0039
基于等 Weber 数的结冰外形修正
Ice shape modification based on constant Weber number
摘要
Abstract
The Weber number in an icing wind tunnel test is often different from that of the real flight icing condition due to the limitation of facility capacity.In order to obtain consistent result of aimed Weber number,the test ice shape need to be modified.The reason of icing test data correction is analyzed in this paper.A method for ice shape modification based on the ice geometric features is proposed.The ice shape of a supercritical airfoil is simulated under the condition of different Weber number,and the effect of Weber number on icing is studied.Then the ice shape modification based on constant Weber number is carried out.It is found that:(1) The Weber number mainly affects ice horns,and has little influence on droplet collection,icing limit and thickness;(2)There is a sensitive value existed,as the Weber number changes smaller than the value ice varies little,while the Weber number is bigger than the value,ice will vary obviously according to the change of this Weber number;(3 )The proposed ice modification method can guarantee the agreement between the modified and the target ice shape,so the ice shape differences caused by Weber number differences can be amount to eliminated,and the precision of test will be improved.关键词
飞机结冰/Weber 数/冰形修正/结冰风洞/结冰相似准则/结冰试验/飞行安全Key words
aircraft icing/Weber number/ice shape modification/icing wind tunnel/icing scaling law/icing test/flight safety分类
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易贤,郭龙,周志宏,杜雁霞,朱国林..基于等 Weber 数的结冰外形修正[J].空气动力学学报,2016,34(6):697-703,7.基金项目
国家自然科学基金(11172314,11472296) （11172314,11472296）
国家重点基础研究发展计划(2015CB755800) （2015CB755800）
