نتایج جستجو برای: converging and diverging channels

تعداد نتایج: 16848884  

1993
Olvi L. Mangasarian Mikhail V. Solodov

The fundamental backpropagation (BP) algorithm for training artificial neural networks is cast as a deterministic nonmonotone perturbed gradient method. Under certain natural assumptions, such as the series of learning rates diverging while the series of their squares converging, it is established that every accumulation point of the online BP iterates is a stationary point of the BP error func...

Journal: :Optics letters 2006
John C Painter Mark Adams Nicole Brimhall Eric Christensen Gavin Giraud Nathan Powers Matthew Turner Michael Ware Justin Peatross

We investigate the spatial evolution of a laser pulse used to generate high-order harmonics (orders ranging from 45 to 91) in a semi-infinite helium-filled gas cell. The 5 mJ, 30 fs laser pulses experience elongated focusing with two distinct waists when focused with f/125 optics in 80 Torr of helium. Extended phase matching for the generation of harmonics occurs in the region between the doubl...

2008
M. C. Louwerse H. V. Jansen M.N.W. Groenendijk M. C. Elwenspoek

⎯ To enable formation flying of micro satellites, small sized propulsion systems are required. Our research focuses on the miniaturization of a feeding and thruster system by means of micro system technology (MST). Three fabrication methods have been investigated to make a conical converging-diverging nozzle. These methods are reactive ion etching, femtosecond laser machining (FLM) and a combin...

Journal: :IOP Conference Series: Earth and Environmental Science 2018

Journal: :Engineering Analysis with Boundary Elements 2009

Journal: :Frontiers in Energy Research 2022

In this paper numerical analysis of the condensing steam flow in a converging-diverging nozzle is investigated. The ANSYS Fluent results are compared with in-house academic Computational fluid dynamics code respect to capacity for thermodynamic assessment. “local” real gas equation state used as mathematical complement governing equations code. code, functions well and water physical properties...

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