نتایج جستجو برای: ergun equation

تعداد نتایج: 229771  

ژورنال: فرآیند نو 2015

در این تحقیق رفتار سیال در یک بستر پرشده ثابت با نسبت قطر لوله به قطر ذره برابر 6/4 با استفاده از دینامیک سیالات محاسباتی بررسی شد. هندسه بستر با استفاده از روش پرکن گسسته مدل شد. شبیه سازی های CFD در گستره عدد رینولدز 79/611-85/3 در رژیم جریان آرام و آشفته انجام شدند. در رژیم جریان آشفته از مدل آشفتگی RNG k-ε استفاده شد. مشاهده شد که جریان سیال در فاصله 75/0 سانتیمتر از ابتدای بستر توسعه یافته...

2008
Ivan G. Pojarlieff Iva B. Blagoeva Maria M. Toteva Ergun Atay Violina T. Angelova Nikolay G. Vassilev Asen H. Koedjikov

Acid catalyzed intramolecular attack of b-phenylthioureido group on amide function. Parallel formation of thiodihydrouracil and 4-iminothiodihydrouracil. Different pathways in the Edman degradation reaction in the formation of sixversus five-membered cyclic intermediates Ivan G. Pojarlieff*, Iva B. Blagoeva, Maria M. Toteva, Ergun Atay, Violina T. Angelova, Nikolay G. Vassilev and Asen H. Koedj...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2012
A Tamayol K W Wong M Bahrami

In this study, effects of microstructure on the viscous permeability and Forchheimer coefficient of monodispersed fibers are investigated. The porous material is represented by a unit cell which is assumed to be repeated throughout the medium. Based on the orientation of the fibers in the space, fibrous media are divided into three categories: one-, two-, and three-directional (1D, 2D, and 3D) ...

2012
AJung Moon Ergun Calisgan Fiorella Operto Gianmarco Veruggio Machiel Van der Loos

Mechanical Engineering, University of British Columbia, Vancouver, Canada ii (Email: [email protected]) School of Robotics, Genoa, Italy iii (Email: [email protected]) CNR, National Research Council, Genoa, Italy Open Roboethics: Establishing an Online Community for Accelerated Policy and Design Change AJung Moon, Ergun Calisgan, Fiorella Operto, Gianmarco Veruggio, and H. F. Machi...

Journal: :Sig. Proc.: Image Comm. 2005
Ali C. Begen Yücel Altunbasak Özlem Ergun Mostafa H. Ammar

OO F Multi-path selection for multiple description video streaming over overlay networks Ali C. Begen, Yucel Altunbasak , Ozlem Ergun, Mostafa H. Ammar School of Electrical and Computer Engineering, Center for Signal and Image Processing, Georgia Institute of Technology, 777 Atlantic Drive, Atlanta, GA 30332-0250, USA School of Industrial and Systems Engineering, Georgia Institute of Technology...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بناب - دانشکده علوم پایه 1393

در این پایان نامه یک روش عددی برای حل معادلات کسری-زمانی و کسری-فضایی برگر ‎egin{equation*}‎ ‎d_t^{alpha}u+varepsilon uu_{x}= u u_{xx}+eta d_x^{eta}u‎, ‎end{equation*}‎ معادله ی کسری-زمانی و کسری-فضایی پوآسن ‎egin{equation*}‎ ‎d_x^{eta}u‎ + ‎d_t^{alpha}u = f(x,t)‎, ‎end{equation*}‎ و معادله ی کسری-زمانی انتشار ‎egin{equation*}‎ ‎d_t^alpha u+u=k abla^2 u‎ + ‎f(x,t)‎, ‎end{equation*}‎ ...

Journal: :Agronomy 2021

Although biochars made in laboratory seem to remove H2S and odorous compounds effectively, very few studies are available for commercial biochars. This study evaluated the efficacy of a biochar (CBC) removing volatile organic (VOCs). We found that well-known Ergun equation may not be adequate predicting pressure drop properly sizing ventilation system. The breakthrough adsorption capacity CBC w...

Journal: :Catalysts 2022

In this study, a water- and heavy hydrocarbon-removal process of natural gas refinery currently in operation using the temperature swing adsorption method is modeled investigated. The aim to decrease hydrocarbon dew point −10 °C diminish water content about 0.1 ppm. This unit consists four beds with two layers which are state, while others kept regeneration state. composition bed specification ...

2010
Selim Jürgen Ergun Teresa García-Muñoz M. Fernanda Rivas

Selim Jürgen Ergun, Teresa García-Muñoz, M. Fernanda Rivas METU NCC Economics Program and GLOBE Departamento de Métodos Cuantitativos para la Economía y la Empresa and GLOBE Universidad de Granada ABSTRACT This paper reviews the experimental economics literature on gender differences concerning four subjects: risk aversion, trust, deception and leadership. The vast majority of the articles we h...

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