摘要
为更深入地研究脊状表面减阻技术及应用,对国内外学者在脊状表面减阻技术方面的研究现状进行了较为全面的论述,首先介绍了目前认可度较高的减阻机理,而后详细地描述结构层面和布置方式对脊状结构减阻优化现状,再深入到脊状表面流动特性的分析,对不同减阻机理探究方法进行总结;随后介绍了脊状结构在翼型表面的减阻研究结果。通过对2种常见表面脊状结构减阻进行综述总结并进行了展望。减阻机理研究侧重点应为微观湍流拟序结构变化,结合涡结构的产生、扩散和耗散等相关理论对其进行分析。而实际工程运用中,因分析脊状结构减阻、噪声和传热之间的联系,并延伸边界层减阻技术的研究领域,分析不同因素之间相互影响。
To study better the technology and application of riblet surface drag reduction and present the domestic and foreign scholars a more comprehensive overview about the ridged surface drag reduction, the mechanism of the drag reduction of high rec-ognition is reveled in present paper firstly. Then the paper discusses the current situation of optimization about structure level and arrangement of riblet structure of dag reduction Moreover, the flow characteristics and a summary of different methods to inves-tigate the riblet structure are further referred in present paper. Subsequently, the achievements of the riblet structure are intro-duced and then the conclusion is drawn by a comparison between two normal ridge structures of drag reduction The results show that the investigation of the riblet structure should focus on microstructure change of microturbulence based on the theory of the generation, diffusion and dissipation of vortex structure. But in actual application, the relationship between drag reduction, noise and heat transfer of ridge structure should be analyzed, and it should extend to the field of boundary layer drag reduction analyze the influence of different factors.
出处
《中国科技论文》
CAS
北大核心
2016年第23期2660-2666,共7页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20110036110009)
中央高校基本科研业务费专项资金资助项目(2015MS111)
关键词
脊状结构
流动减阻
边界层控制
湍流特性
riblet structure
drag reduction of flow
boundary layer control
turbulent characteristics
