نتایج جستجو برای: pump as turbine

تعداد نتایج: 5694027  

Journal: :anesthesiology and pain medicine 0
timothy j. kovanda department of neurological surgery, goodman campbell brain and spine, indiana university, indianapolis, usa ecaterina pestereva department of neurological surgery, goodman campbell brain and spine, indiana university, indianapolis, usa albert lee department of neurological surgery, goodman campbell brain and spine, indiana university, indianapolis, usa; department of neurological surgery, goodman campbell brain and spine, indiana university, 355 west 16th street, suite 5100, indianapolis, in 46202, usa. tel: +1-3173961300, fax: +1-3173961443

conclusions intraperitoneal migration of a subfascially placed baclofen pump is a rare, yet serious complication, which has been reported only once in the literature. we advise neurosurgeons to have a low level of threshold in confirming the location of a baclofen pump with imaging and surgical exploration if necessary in order to avoid detrimental outcomes such as bowel perforation. case prese...

2014
Mohsen Saadat Farzad A. Shirazi Perry Y. Li

This paper presents the modeling and control for a novel Compressed Air Energy Storage (CAES) system for wind turbines. The system captures excess power prior to electricity generation so that electrical components can be downsized for demand instead of supply. Energy is stored in a high pressure dual chamber liquid-compressed air storage vessel. It takes advantage of the power density of hydra...

Journal: :Actuators 2022

The start-up process of a centrifugal pump as turbine (PAT) under gas–liquid two-phase conditions was simulated based on Fluent, and the evolution mechanism internal flow field variation law force characteristics were studied in its conditions. results show that area with high gas phase concentration corresponds to strong vortex at beginning start-up. intensity impeller gradually decreases an i...

Journal: :energy equipment and systems 0
mahdi nili-ahmadabadi department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran farzad mokhtarinia department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran mehdi shirani subsea r&d center, isfahan university of technology, isfahan 84156-83111, iran

the purpose of this study is to improve the aerodynamic performance of wind turbine blades, using the ball-spine inverse design method. the inverse design goal is to calculate a geometry corresponds to a given pressure distribution on its boundaries. by calculating the difference between the current and target pressure distributions, geometric boundaries are modified so that the pressure differ...

Journal: :energy equipment and systems 2015
saadat zirak hamid ebrahimi ahmad reza maissamy

determination of the starter torque-speed diagram is a major task in the design or selection of a proper gas turbine starter. in this paper, the maximum power of the mgt-40 gas turbine starter was calculated based on the dynamics of the rotor, start-up logic, and compressor map. in a recent research, the pressure ratio was assumed as a linear function of the rotor speed and the required starter...

Journal: :IOP Conference Series: Earth and Environmental Science 2021

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