نتایج جستجو برای: hydraulic failure

تعداد نتایج: 399750  

In this paper the rapidly varied unsteady flow caused by the failure of a dam in a rectangular dry bed horizontal channel has been studied both theoretically and experimentally. Experiments with dam-break flows in smooth and rough channel have been carried out. Comparisons have been made between measured depth hydrographs at different stations along the channel and analytical solution of Ritter...

2016
Yu Wang Xiao Li Jianming He Zhiheng Zhao Bo Zheng

Researchers have recently realized thatsilty laminas are very developed in naturally fractured continentalsedimentary formations in the Ordos Basin(China). Studies have shown that silty laminas are significant to improve the physical properties and gas storage capacity, and the natural fractures interact with the hydraulic fractures to maximize the fracture network during hydraulic fracturing. ...

2011
Hari Prasad Neopane Ole Gunnar Dahlhaug Michel Cervantes

Sediment erosion not only reduces efficiency and life of hydropower turbines but also causes problems in operation and maintenance. Several factors are responsible for this erosion in hydro turbine components. This paper presents the sediment erosion types in hydraulic turbines and their components based upon an extensive literature review and the field observation at Cahua hydropower plant, Pe...

Journal: :The New phytologist 2013
Guang-You Hao Mary E Lucero Stewart C Sanderson Elizabeth H Zacharias N Michele Holbrook

Plant hydraulic characteristics were studied in diploid, tetraploid and hexaploid cytotypes of Atriplex canescens (Chenopodiaceae) to investigate the potential physiological basis underlying the intraspecific habitat differentiation among plants of different ploidy levels. Populations of A. canescens from different habitats of the Chihuahuan Desert (New Mexico, USA) were analyzed using flow cyt...

Journal: :The New phytologist 2013
Nate G McDowell Rosie A Fisher Chonggang Xu J C Domec Teemu Hölttä D Scott Mackay John S Sperry Amanda Boutz Lee Dickman Nathan Gehres Jean Marc Limousin Alison Macalady Jordi Martínez-Vilalta Maurizio Mencuccini Jennifer A Plaut Jérôme Ogée Robert E Pangle Daniel P Rasse Michael G Ryan Sanna Sevanto Richard H Waring A Park Williams Enrico A Yepez William T Pockman

SUMMARY Model-data comparisons of plant physiological processes provide an understanding of mechanisms underlying vegetation responses to climate. We simulated the physiology of a piñon pine-juniper woodland (Pinus edulis-Juniperus monosperma) that experienced mortality during a 5 yr precipitation-reduction experiment, allowing a framework with which to examine our knowledge of drought-induced ...

2014
Do Guen Yoo Doosun Kang Joong Hoon Kim Markus Disse

This paper describes a study conducted to develop a method to facilitate more reliable determination of the rehabilitation priority order for water pipes by taking into account the pipes’ hydraulic importance. Existing methods use only the pipeline deterioration rate to determine the rehabilitation priority order. Accordingly, the deterioration rate under normal conditions and the hydraulic imp...

Journal: :Procedia Structural Integrity 2016

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