Revisit submergence of ice blocks in front of ice cover–an experimental study

作     者：Jun Wang Yi-fan Wu Jueyi Sui 王军;吴一帆;Jueyi Sui

作者机构：College of Civil and Hydraulic Engineering Hefei University of Technology Hefei 230009 China Environmental Sciences and Engineoring Program University of Northern British Columbia Prince George BC Canada 

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

年 卷 期：2018年第30卷第2期

页      面：336-344页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.51379054) 

主　　题：Criteria for entrainment ice Froude number ice block ice cover dimension of ice block 

摘      要：The present paper studies the stabilities of ice blocks in front of an ice cover based on experiments carried out in laboratory by using four types of ice blocks with different dimensions. The forces acting on the ice blocks in front of the ice cover are analyzed. The critical criteria for the entrainment of ice blocks in front of the ice cover are established by considering the drag force caused by the flowing water, the collision force, and the hydraulic pressure force. Formula for determining whether or not an ice block will be entrained under the ice cover is derived. All three dimensions of the ice block are considered in the proposed formula. The velocities calculated by using the developed formula are compared with those of calculated by other formulas proposed by other researchers, as well as the measured flow velocities for the entrainment of ice blocks in laboratory. The fitting values obtained by using the derived formula agree well with the experimental results.