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

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

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Groundwater Flow Driven by Heat

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Journal of Groundwater Science and Engineering 2013年第3期1卷 22-27页

作者： Zong-jun Gao Yong-gui Liu Shandong University of Science and Technology The Second Hydro-Engineering Geology Brigade Shanxi Geologic Bureau

The temperature of groundwater will be increasing gradually while it is recharged and infiltrated down to the depth because of the geothermal gradient. So the density of water is smaller and smaller. The author puts forward the heat-driving mechanism that the movement of the groundwater is caused by the density differences from different temperatures. Based on this idea, the author proposes the short range recharge model of geothermal water in flat terrain hilly area. The model explains the coexistence mechanism of recharge and discharge(hot springs) zones can be at the same altitude. Considering that the temperature is an important driving force of groundwater movement, the paper puts forward and demonstrates that the hot springs can expose at higher lands while the recharge zone being situated lower lying areas.

关键词： Groundwater flow Heat Temperature difference density difference Driving mechanism

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Insight into the π-hole Interactions in the Complexes of C3N3X3…(NCH)n and B3O3X3…(NCH)n(X=H,F,CN;n=1, 2)

Insight into the π-hole Interactions in the Complexes of C3...

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第十三届全国量子化学会议

作者： Runtian Chu Jiaojiao Wang Lingpeng Meng Yanli Zeng College of Chemistry and Material Science Hebei Normal University

Noncovalent intermolecular interaction plays a critical role in the field of chemistry and biology [1]. In recent years, interest in new t ypes of π-hole [2]interaction has increased. For inorganic benzenes CNX and BOX(X = H, F,CN), the positive electrostatic potentials(π-hole) were discovered above and below the inorganic benzene ring center. Then, the π-hole interactions between the inorganic benzenes and NCH have been designed and investigated by MP2/aug-cc-pVDZ calculations. In this work, the bimolecular complexes CNX…NCH, BOX…NCH(X = H, F, CN) and termolecular complexes BOX…NCH…NCH, CNX…NCH…NCH(X = H, F, CN) were designed to illustrate the enhancing effects of H…N hydrogen bond on the π-hole interactions. The π-hole interaction energy was influenced by the strength of different electron-withdrawing substituent s of inorganic benzenes, gradually increase in the order of X = H, F, CN. What’s more, the π electron densities accounts for nearly 70% of the total electron densities, which indicates the strength of interaction energy is determined by π-type electron densities.

关键词： π-hole interaction inorganic benzenes density difference

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Car license plate location based on the density and projection

Car license plate location based on the density and projecti...

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第三届中国智能计算大会

作者： Jun Ren Su Theschool of Communication and Information Engineering University of Electronic Science and Technology of China Chengdu Sichuan China Zheng Ma The school of Communication and Information Engineering University of Electronic Science and Technology of China Chengdu Sichuan China

＜正＞license plate location is one of the key link in the license plate recognition *** the plate location is successful and how accurate is the location decide directly the recognition and the effects in the latter *** the license plate area has a high density difference in the difference image,we have put forward an algorithm for the license plate location based on the density and *** results show that this method can quickly and correctly locate the license plate area.

关键词： projection mathematical morphology density difference wave merging the license plate location

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