نتایج جستجو برای: flat double layer space grids

تعداد نتایج: 1049134  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1379

چاههای حرارتی میکروکانال بطور کلی از کانالهایی با ابعاد بسیار ریز در حدود 5 تا 200 میکرون تشکیل شده اند. از ویژگیهای مهم این کانال اینستکه ضریب انتقال حرارت (h) در آنها بسیار زیاد است . این ویژگی باعث می شود تا از نظر تکنیکی مسائل مربوط به طراحی و ایجاد آنها را بطور جدی مطالعه و روزبروز بر دقت ساخت آنها بیافزاییم. از آنجا که دستگاههایی که این کانالهای ریز در آنها تعبیه میشوند معمولا" دارای بار ...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 1997

A Ehsani J Rezaeepazhand,

The present paper investigates the advantages of a new class of composite grid structures over conventional grids. Thus far, a known grid structure such as orthogrid or isogrid has been used as an orthotropic layer with at most in-plane anisotropy. The present laminated grid is composed of various numbers of thin composite grid layers. The stiffness of the structure can be adjusted by choosing ...

2005
Minzheng Duan Qilong Min Jiangnan Li

[1] A fast radiative transfer model has been developed for simulating high-resolution absorption bands. The first scattering radiance is calculated accurately by using the higher number of layers and streams for all required wave number grids. The multiple-scattering component is extrapolated and/or interpolated from a finite set of calculations in the space of two integrated gaseous absorption...

K Seghir M Bendaoui R Benbouta,

The elasticity mixed boundary values problems dealing with half-space contact are generally well resolved. A large number of these solutions are obtained by using the integral transformation method and methods based the integral equations. However, the problems of finite layer thicknesses are less investigated, despite their practical interests. This study resolves a quasi-stationary problem of...

2012
N. Patten T. M. Young

Preliminary results for a new flat plate test facility are presented here in the form of Computational Fluid Dynamics (CFD), flow visualisation, pressure measurements and thermal anemometry. The results from the CFD and flow visualisation show the effectiveness of the plate design, with the trailing edge flap anchoring the stagnation point on the working surface and reducing the extent of the l...

K. Abedi, M.R. Sheidaii,

Considering the vulnerability of double-layer grid space structures to progressive collapse phenomenon, it is necessary to pay special attention to this phenomenon in the design process. Alternate path method is one of the most appropriate and accepted methods for progressive collapse resistant design of structures. Alternate Path Method permits local failure to occur but provides alternate pat...

K. Abedi, M.R. Sheidaii,

Considering the vulnerability of double-layer grid space structures to progressive collapse phenomenon, it is necessary to pay special attention to this phenomenon in the design process. Alternate path method is one of the most appropriate and accepted methods for progressive collapse resistant design of structures. Alternate Path Method permits local failure to occur but provides alternate pat...

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