Results 21 to 30 of about 2,358,970 (54)

Efficient computation of spinning modal radiation through an engine bypass duct

open access: yes, 2008
The aim of this work is to accurately and efficiently predict sound radiation out of a duct with flow. The sound propagation inside a generic engine bypass duct, refractions by the shear layer of the exhaust flow, and propagation in the near field are ...
Zhang, Xin   +7 more
core   +1 more source

Energy efficient engine: Turbine transition duct model technology report [PDF]

open access: yes, 1982
The Low-Pressure Turbine Transition Duct Model Technology Program was directed toward substantiating the aerodynamic definition of a turbine transition duct for the Energy Efficient Engine.
Leach, K., Thurlin, R.
core  

A study of high speed flows in an aircraft transition duct [PDF]

open access: yes, 1991
The study of circular-to-rectangular transition duct flows with and without inlet swirl is presented. A method was devised to create a swirling, solid body rotational flow with minimal associated disturbances.
Reichert, Bruce, Reichert, Bruce A.
core   +1 more source

Heat Transfer in a Superelliptic Transition Duct [PDF]

open access: yes, 2008
Local heat transfer measurements were experimentally mapped using a transient liquid-crystal heat transfer technique on the surface of a circular-to-rectangular transition duct.
Poinsatte, Philip   +2 more
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Selection criteria for preoperative endoscopic retrograde cholangiopancreatography before laparoscopic cholecystectomy and endoscopic treatment of bile duct stones. Results of a retrospective; single center study between 1996-2002 [PDF]

open access: yes, 2004
AIM: The optimal treatment for bile duct stones (in terms of cost, complications and accuracy) is unclear. The aim of our study was to determine the predictive factors for preoperative endoscopic retrograde cholangiopancreatography (ERCP).
Réti, György   +4 more
core   +1 more source

An aggressive S-shaped compressor transition duct with swirling flow and aerodynamic lifting struts

open access: yes, 2014
In a multistage intermediate pressure compressor an efficiency benefit may be gained by reducing reaction in the rear stages, and allowing swirl to persist at the exit.
Ian Mariah (1255914)   +5 more
core   +6 more sources

Morphology of the patent arterial duct : features relevant to treatment [PDF]

open access: yes, 2008
Patent ductus arteriosus (PDA), one of the most common congenital heart defects, is an abnormal persistence of a patent lumen in the arterial duct due to an arrest of the natural process of closure after it has served its function as a vital channel ...
Ho, Siew Yen   +2 more
core  

Optimalization and calculation of transition duct design

open access: yes, 2008
The goal of this thesis is to create a methodic and a system, which would involve customized computing and consequent design of the transition duct using input and applied data effectively and would achieve optimized set of parameters.
Havlíček, Tomáš
core   +1 more source

Optimal Growth and Transition to Turbulence in Magnetohydrodynamic Duct Flow

open access: yes, 2010
We consider the flow of an electrically conducting fluid in a duct in the presence of a constant magnetic field perpendicular to the flow. The technologically relevant approximation of small magnetic Reynolds number is adopted. The focus of investigation
Maurice Rossi   +3 more
core   +1 more source

The persistently patent arterial duct in the premature infant [PDF]

open access: yes, 2001
The presence of a persistently patent arterial duct is common in premature neonates and may be associated with high morbidity. Early accurate diagnosis, assessment of the significance of the left to right shunt and prompt treatment are required to ...
Gardiner, Helena Maria   +2 more
core  

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