نتایج جستجو برای: rectangular opening

تعداد نتایج: 71821  

2017
Steven J. Hoff Cheng Gang Wu

Four commercially available sidewall air inlets and one sharp-edged rectangular opening were tested in a fullscale building section under similar isothermal conditions. Large differences were found between inlets for airjet spread, axial velocity decay, airjet throw, and entrainment ratio. A criterion was derived for evaluating inlets utilizing airjet throw, airjet spread, entrainment ratio, an...

2013
Abdul-Rahim A. Khaled Kambiz Vafai

The present work analyzes theoretically and verifies the advantage of utilizing rectangular microcantilevers with long-slits in microsensing applications. The deflection profile of these microcantilevers is compared with that of typical rectangular microcantilevers under the action of dynamic disturbances. Various force-loading conditions are considered. The theory of linear elasticity for thin...

Journal: :Proceedings. Biological sciences 2012
Tommaso Pecchia Giorgio Vallortigara

The macroscopic, three-dimensional surface layout geometry of an enclosure apparently provides a different contribution for spatial reorientation than the geometric cues associated with freestanding objects arranged in arrays with similar geometric shape. Here, we showed that a unitary spatial representation can account for the capability of animals to reorient both by extended surfaces and dis...

2010
Hong Hocheng Kuan-Yu Wang

The excimer laser machining has been widely applied to micromachining of various materials. An excimer laser dragging process to ablate a groove pattern on a polycarbonate (PC) sheet through a mask opening is analyzed in this paper. Currently, a large number of papers studying the interaction between the laser machining parameters and various materials are presented. However, the prediction of ...

2009
Md. Mustafizur Rahman Md. Elias M. A. Alim

In this paper, a study of mixed convection flow inside a rectangular ventilated cavity in the presence of a heat conducting square cylinder at the center has been carried out. An external fluid flow enters the cavity through an opening in the left vertical wall and exits from another opening in the right vertical wall. The governing equations are transformed into non-dimensional form and the re...

2005
Takashi Kojima Yasuhiko Nakagawa Koji Matsuki Toshiyuki Hashida

Hydraulic fracturing with constant fluid injection r a t e was numer ica l ly model led for a p a i r of rectangular longitudinal fractures intersecting a wellbore i n a n i m p e r m e a b l e rock m a s s , a n d numerical calculations have been performed to investigate the relations among the form of pressuretime curves, fracture opening/propagation behavior a n d permeabi l i ty of t h e me...

ژورنال: علوم آب و خاک 2011
جواد فرهودی, , حسین حمیدی فر, , محمد حسین امید, ,

This paper presents the results of an analytical and experimental study on the characteristics of hydraulic jump in a triangular channel. The analytical consideration is based on the momentum conservation law for the upstream and downstream sections of the jump. The experiments were carried out in a triangular channel of glass side walls with the vertex angle of 94.4°. A wide range of discharge...

Journal: :International Journal of Advanced Structural Engineering 2018

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