نتایج جستجو برای: square cross section part

تعداد نتایج: 1316218  

2017

A general formula is derived for the scattering cross section of a passive n-element linear array consisting of isotropic radiators. When all the reactances are tuned out and scattering in the mirror direction is investigated, it is found that A,,, the relative scattering cross section is equal to the square of the maximum gain the array can produce. As a consequence, for forward scattering in ...

Journal: :Collection of scientific works of the Ukrainian State University of Railway Transport 2019

2018
Francesco Fornarelli Ruggiero Dadduzio Marco Torresi Sergio Mario Camporeale Bernardo Fortunato

A fully 3D unsteady Computational Fluid Dynamics (CFD) approach coupled with heterogeneous reaction chemistry is presented in order to study the behavior of a single square channel as part of a Lean [Formula: see text] Traps. The reliability of the numerical tool has been validated against literature data considering only active BaO site. Even though the input/output performance of such catalys...

Journal: :Revista Facultad de Ingeniería - Universidad de Tarapacá 2006

Journal: :Thermal Science 2022

In this study, the effect of various concentrations Al2O3-water nanofluid on heat transfer in duct with a square cross-section, under conditions continuous flux and laminar forced flow, investigated numerically. Reference experi-mental application parameters are accepted as reference, calculated single phase homogeneous model (SPHM) Brownian (SPBM) models, average coefficient results numerical ...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

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