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Two-phase smooth particle hydrodynamics modeling of air-water interface in aerated flows

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Science China(Technological Sciences) 2017年第3期60卷 479-490页

作者： YANG HuiXia LI Ran LIN PengZhi WAN Hang FENG JingJie College of Civil Engineering Guizhou University State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

Abstracted/indexed in：Science Citation Index,Science Citation Index Expanded（SciSearch）,Journal Citation Reports/Science Edition,SCOPUS,INSPEC,Zentralblatt Math,Chemical Abstracts Service（CAS）,Google Scholar,CSA,Academic OneFile,Current Contents/Engineering,Computing and Technology,Earthquake Engineering Abstracts,EI-Compendex,Gale,OCLC,SCImago,Summon by ProQuest Supervised by Chinese Academy of Sciences

关键词： aerated flow dam break density difference hydraulic jump interface smoothed particle hydrodynamics

SONIC SPEED AND SHOCK WAVE IN HIGH VELOCITY aerated flowS FROM HIGH HEAD DISCHARGE STRUCTURES

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Journal of Hydrodynamics 2003年第4期15卷 98-103页

作者： Dong Zhi-yong Schood of Civil and Architectural Engineering, Zhejiang University of Technology, Hangzhou 310014, China Sch. of Civil and Arch. Eng. Zhejiang Univ. of Technol. Hangzhou 310014 China

The compressible characteristics in aerated flows at the high velocity ofabout 50m/s were analyzed. Based on the theory of compressible the relations between the sonic speedand shock wave in high-velocity aerated flow were theoretically deduced. And comparisons withmeasured data were made. The theoretical and experimental results show the sonic speed in aeratedflow is merely of the order of several-dozen meters per second, and its minimum value is only 20m/s, which is far much less than that in water or air alone. So high subsonic flow, supersonic flowand transonic flow as well as compression wave, shock wave and expansion wave similarly toaerodnamics may be produced in high velocity aerated flow at the speed of the order of 50m/s. Hencethe influences of these compressible characteristics on high head discharge structures can not beneglected, especially on super high dams over 200m high.

关键词： sonic speed shock wave aerated flow super high dam compressibility

Experimental study on pressure and aeration characteristics in stepped chute flows

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Science China(Technological Sciences) 2015年第4期58卷 720-726页

作者： XU Wei Lin LUO Shu Jing ZHENG Qiu Wen LUO Jing State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

The free flow on the step surfaces has received much attention for its representative body type,flow structure,water-air two phase flow,cavitation,and many complex *** experiments about the time-averaged pressure and aeration concentration distribution on the step surface show that the vertical plane of steps will inevitably experience negative pressure,which must rely on adequate aeration concentration to avoid cavitation ***,the self-aerated flow at the head section has a relatively low aeration concentration,and the concentration of the entire steps decreases with the increasing of weir head,the minimum appears in the vicinity of the corner,and the location is close to the minimum ***,it is necessary to set aerator in the upstream end of the step surfaces to avoid cavitation damage.

关键词： stepped spillway time-averaged pressure aerated flow cavitation erosion