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  • 1
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    Numerical analysis of the interactions of sheet cavitation and cloud cavitation around a hydrofoil (2015)
    Institute of Physics (IOP)
    Details
    Publication Date: 2015-01-16
    Description: Partial cavitation and cloud cavitation on NACA66(MOD) was studied based on PANS turbulence model combined with the Zwart cavitation model. The results agree well with the data from the experimental results. The existence of a kind of unsteady characteristics of cloud cavitation is analysed in details. The reasons for the inhibition mechanism of the sheet cavitation are discussed. Pressure shock wave occurs near the tailing edge of the hydrofoil when the collapse of cloud is so large leading to great influence on the cavity closed to the leading edge. The evolution of the pressure peak and its propagation toward the leading edge were investigated through the study of the time domain signal of the monitor points along the streamline of flow. Finally, the propagation of the pressure wave on the suction side was further investigated through analysing the spatial-time history of wall pressure.
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
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  • 2
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    Analysis of physical composition and heavy metals pollution of municipal solid waste (MSW) in Beijing (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-03-25
    Description: By using on-site sampling and physical-chemical analysis, the physical composition and the contents of heavy metals in Beijing MSW were researched. The result showed that the main components of MSW in Beijing are mainly kitchen waste, the average content of kitchen waste are more than 60% and 50% in summer and in winter, respectively. The pollution of Cu, Hg and Cr are all more serious for MSW in Haidian and Dongcheng district. The heavy metal pollution of MSW in summer is higher than that in winter in Beijing. Seasonal impacts should be taken into consideration when dealing with MSW. The content of heavy metals in MSW exceeded the background value of soil in Haidian and Dongcheng districts. In order to reduce heavy metal pollution, the MSW should be separated collection and treated.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 3
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    Rural development model and influence of endogenous power in Guangdong Province, China (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-08-31
    Description: Innovating the rural reform, development path and stimulating the endogenous of rural development are conducive to solving the problems lying in “agriculture, rural areas and farmers” comprehensively in the aspects of theoretical innovation and practical guidance. In this study, the research paradigm of “literature review + empirical analysis of investigation cases + theoretical framework analysis + countermeasures and suggestions” is used for analysing Guangdong rural development models and the influencing factors of the endogenous power of rural development. Firstly, the domestic and foreign studies on rural development models and endogenous power are summarized. Secondly, the current situation of Guangdong rural development is statistically analysed from the aspects of new rural construction, rural social service system, comprehensive rural reform and income increase of farmers. Thirdly, five Guangdong rural development models are classified and sorted out through the investi...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
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    PAPER CURRENT
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