نتایج جستجو برای: environmental turbulence

تعداد نتایج: 406509  

2014
Alberto Francesconi Concetta Metallo

1 Environmental Turbulence and Complexity and the Optimal Degree of Internal Open Innovation for MNCs J. Piet Hausberg, Department of Business and Management, LUISS Guido Carli, Rome, Italy & School of Business and Social Sciences, University of Hamburg, Hamburg, Germany Alfredo Valentino, Department of Business and Management, LUISS Guido Carli, Rome, Italy Luca Sabini, Department of Business ...

In this paper, using vortex blob method (VBM), turbulent flow in a channel is studied and physical concepts of turbulence are obtained and discussed. At first, time-averaged velocities,  and , and then their fluctuations are calculated. To clarify turbulence structures, velocity fluctuations and  are plotted. It is observed that turbulence structures occupy different positions and move with con...

The purpose of this paper is to studying nonlinear k-ε turbulence models and its advantages in internal combustion engines, since the standard k-ε model is incapable of representing the anisotropy of turbulence intensities and fails to express the Reynolds stresses adequately in rotating flows. Therefore, this model is not only incapable of expressing the anisotropy of turbulence in an engine c...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2015
a. a. mirmohammadi f. ommi

the purpose of this paper is to studying nonlinear k-ε turbulence models and its advantages in internal combustion engines, since the standard k-ε model is incapable of representing the anisotropy of turbulence intensities and fails to express the reynolds stresses adequately in rotating flows. therefore, this model is not only incapable of expressing the anisotropy of turbulence in an engine c...

2016
Anne Wilkinson Miki Hondzo Michele Guala

Microcystis aeruginosa is a single-celled cyanobacterium, forming large colonies on the surface of freshwater ecosystems during summer, and producing a toxin (microcystin) that in high concentration can be harmful to humans and animals. These toxic effects can be governed by abiotic environmental conditions including water temperature, light, nutrient abundance, and fluid motion. We investigate...

2012
V. S. Neary B. Gunawan

Marine and hydrokinetic (MHK) technology performance testing in the laboratory and field supports the US Department of Energy’s MHK program goals to advance the technology readiness levels of MHK machines, to ensure environmentally responsible designs, to identify key cost drivers, and to reduce the cost of energy of MHK technologies. Laboratory testing results from scaled model machine testing...

2012
Zhongwei Liang Xiaochu Liu Bangyan Ye Richard Kars Brauwer

Because the application of surface fitting algorithms exerts a considerable fuzzy influence on the mathematical features of kinetic energy distribution, their relation mechanism in different external conditional parameters must be quantitatively analyzed. Through determining the kinetic energy value of each selected representative position coordinate point by calculating kinetic energy paramete...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1391

one of the most important factors in study of project’s , is the study of environmental opportunities factors the permanent study of environmental opportunity factors . the study of permanent environmental changing and knowing golden threats’ cooperate with possible threats and at the result in structure forming and future skeleton of organization has a vital effects . the petrochemical industr...

2013
Amaia Sopelana Martin Kunc

Several theoretical and empirical studies identify main components of Organisational Flexibility (OF) and show the relations between them. However, comprehensive analysis of these interrelations over time through the implementation of organisational change remains a challenge. This article presents a simulation model of OF when change strategies are implemented confronting several states of env...

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