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Titlebook: Centrifugal Pumps; Johann Friedrich Gülich Book 20102nd edition Springer-Verlag Berlin Heidelberg 2010 cavitation.fluid flow.hydraulic des

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发表于 2025-3-21 16:20:56 | 显示全部楼层 |阅读模式
书目名称Centrifugal Pumps
编辑Johann Friedrich Gülich
视频video
概述Detailed design procedures for pumps.Large variety of ready to use tables for design calculations and diagnostics.In-depth treatment of the underlying physical mechanisms for practical applications.Co
图书封面Titlebook: Centrifugal Pumps;  Johann Friedrich Gülich Book 20102nd edition Springer-Verlag Berlin Heidelberg 2010 cavitation.fluid flow.hydraulic des
描述Life is linked to liquid transport, and so are vital segments of economy. Pumping devices – be it the human heart, a boiler feeder or the cooling-water pump of a motorcar – are always part of a more or less complex system where pump failure can lead to severe consequences. To select, operate or even design a pump, some understanding of the system is helpful, if not essential. Depending on the appli- tion, a centrifugal pump can be a simple device which could be built in a garage with a minimum of know-how – or a high-tech machine requiring advanced skills, sophisticated engineering and extensive testing. When attempting to describe the state-of-the-art in hydraulic engineering of centrifugal pumps, the focus is nec- sarily on the high-tech side rather than on less-demanding services even though these make up the majority of pump applications. Centrifugal pump technology involves a broad spectrum of flow phenomena which have a profound impact on design and operation through the achievedef- ciency, the stability of the head-capacity characteristic, vibration, noise, com- nent failure due to fatigue, as well as material damage caused by cavitation, - dro-abrasive wear or erosion corro
出版日期Book 20102nd edition
关键词cavitation; fluid flow; hydraulic design; hydraulic forces; hydraulics; material selection; materials; nume
版次2
doihttps://doi.org/10.1007/978-3-642-12824-0
isbn_ebook978-3-642-12824-0
copyrightSpringer-Verlag Berlin Heidelberg 2010
The information of publication is updating

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发表于 2025-3-21 20:54:12 | 显示全部楼层
Pump types and performance data,r in turbomachines is invariably based on hydrodynamic processes for which characteristically all pressure and energy differences are proportional to the square of the circumferential rotor speed. By contrast, positive displacement pumps (e.g. piston pumps) essentially deliver the same volume Vstrok
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Partload operation, impact of 3-D flow phenomena performance, q* < 0.8, at high nq below q* < 0.9. Since blade inlet angles and channel cross sections are too large for the reduced flow rate, flow patterns during partload operation fundamentally change compared with the design point. The flow becomes highly 3-dimensional since it separates in the impeller and
发表于 2025-3-22 12:40:56 | 显示全部楼层
Suction capability and cavitation,ally drops to the vapor pressure of the liquid due to excess velocities, so that some fluid evaporates and a two-phase flow is created in a small domain of the flow field. The vapor condenses suddenly (“implodes”) as soon as it is transported downstream into zones where the static pressure again exc
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Design of the hydraulic components,loping these components, the main dimensions and blade angles are calculated in a first step. Subsequently, the hydraulic contours are designed based on certain rules and methods. Many pump manufacturers employ computer programs for this work, and the drawings are generated on 2D-CAD systems. Howeve
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Operation of centrifugal pumps, centrifugal pump depends on the pressure difference Δp = ρ×g×HA imposed by the system on the pump. The pressure rise Δp generally depends on the flow rate because of hydraulic losses. Thus the system characteristic HA = f(Q) is understood as the difference in total pressure which must be supplied b
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