نتایج جستجو برای: ergun equation

تعداد نتایج: 229771  

2015
Joon Hyon Kim Young Joon Kim Hoon Kim Sang Hyun Nam Young Woong Choi

1. Nielsen GP, Stemmer-Rachamimov AO, Ino Y, et al. Malignant transformation of neurofibromas in neurofibromatosis 1 is associated with CDKN2A/p16 inactivation. Am J Pathol 1999;155:1879-84. 2. Ergun SS, Emel E, Karabekir S, et al. Extracranial diffuse neurofibroma with intracranial extension. Plast Reconstr Surg 2000;105:801-3. 3. Li WY, Reinisch JF. Cysts, pits, and tumors. Plast Reconstr Sur...

2006
BRIAN CLARK ERGUN AKLEMAN

In this paper, we present an approach to a pipeline for time lapse photography using conventional digital images converted to HDR (High Dynamic Range) images (rather than conventional digital or film exposures). Using this method, it is possible to capture a greater level of detail and a different look than one would get from a conventional time lapse image sequence. With HDR images properly to...

Journal: :journal of agricultural science and technology 2011
y. amanlou a. zomorodian

green fig, which is usually consumed as dry fruit, is one of the important non-oil export agricultural commodities of iran. in this study, some important physical properties of green figs including geometric mean diamter, sphericity, porosity, particle and bulk density and pressure drop across a thin bed were measured at constant moisture content of 6% (dry basis). air flow ranges used in this ...

Journal: :Applied sciences 2021

The ventilation resistance of air flow through rice grain layers is one the key parameters affecting drying uniformity as well energy consumption process. In order to reveal variation characteristics with paddy moisture content, velocity and bed layer depth are needed. A second model was fitted pressure drop using response surface methodology results compared those Ergun model. showed that incr...

1999
Kate TAYLOR Anthony G SMITH Stuart ROSS Martin SMITH

A CFD technique for predicting the performance of axisymmetric packed bed filters has been developed. The effect on the pressure drop of a non-uniform voidage distribution within the filter bed has been modelled. A radial voidage distribution was derived from a predictive model based on a modified Mueller equation. The pressure loss through the bed was calculated from the Ergun equation, using ...

2010
K. Yazdchi S. Srivastava S. Luding

Many important natural processes involving flow through porous media are characterized by large filtration velocity. Therefore, it is important to know when the transition from viscous to the inertial flow regime actually occurs in order to obtain accurate models for these processes. In this paper, a detailed computational study of laminar and inertial, incompressible, Newtonian fluid flow acro...

Journal: :Journal of Arid Land 2023

The dead fuel moisture content (DFMC) is the key driver leading to fire occurrence. Accurately estimating DFMC could help identify locations facing risks, prioritise areas for monitoring, and facilitate timely deployment of fire-suppression resources. In this study, environmental variables, including air temperature, relative humidity, wind speed, solar radiation, rainfall, atmospheric pressure...

2010
M. Zikmundová

We consider a stochastic motion in a bounded planar region and a point process of events on a trajectory of the motion. The aim is to use the particle filter for the estimation of the conditional intensity of the point process and simultaneously for the reconstruction of the trajectory which is considered unknown. Using a simulated dataset numerical results are obtained and presented. Introduct...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده علوم 1392

در این رساله، وجود و چندگانگی جواب های مثبت دسته ای از معادلات و دستگاه معادلات دیفرانسیل با مشتقات جزئی غیرخطی با شرط های مرزی همگن دیریکله را بر اساس روش جواب های پایینی-بالایی در دو مفهوم کلاسیک و ضعیف مورد بحث قرار می دهیم. فرض کنید $omega$ دامنه ای کراندار در $mathbb{r}^n$ با مرز هموار $partial omega$ است. ابتدا، وجود جواب های مثبت مسائل نیمه مثبت گون نامتناهی [ -delta u=-a ...

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