RELATION BETWEEN COHERENT STRUCTURE AND SCALING LAW IN RAYLEIGH-BENARD CONVECTION BASED ON WAVELET TRANSFORMATION

作     者：FUQiang JIANGMin XIAKe-qing 

作者机构：SchoolofScienceP.L.A.UniversityofScienceandTechnologyNanjing211101China DepartmentofphysicsTheChineseUniversityofHongKongHongKongChina SchoolofScienceP.L.A.UniversityofScienceandTechnologyNanjing211101China DepartmentofphysicsTheChineseUniversityofHongKongHongKongChina 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2004年第16卷第4期

页      面：436-441页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：ThisWorkwassupportedbytheResearchGrantsCounciloftheHongKongSpecialAdministrativeRegion (GrantNo :CUHK319/ 96p) 

主　　题：scaling law coherent structure wavelet transformation rayleigh-benardconvection 

摘      要：In this paper, the Extended Self Similarity (ESS) was used to study thescaling exponent ξ(q) of temperature data in the Reyleigh-Benard convection and its variation withexperimental measuring locations. The results show that ξ(q) varies with locations and agrees wellwith experimental data. And then the wavelet transformation is used to extract the coherentstructure, by means of the definition of a called non-coherent signal. we can understand theinfluence of coherent structure on ξ(q) and the relations between large scale vortex motions andsmall ones.