نتایج جستجو برای: wake region

تعداد نتایج: 557905  

Journal: :مکانیک سیالات و آیرودینامیک 0
عبدالامیر بک خوشنویس محمدجواد ایزدی یزدی

the flow characteristics around an elliptic cylinder with an axis ratio of ar=2 located near a flat plate were investigated experimentally. the elliptic cylinder was located on the inside and outside a turbulent boundary layer region whose thickness (δ) is 0.38b. the reynolds numbers based on the height of the cylinder cross-section were 15000 and 30000. measurements of mean velocity and turbul...

The shape of wake behind a wind turbine is normally assumed to have a hat shape for the models used in wind farm layout optimization purposes; however, it is know from experimental tests and numerical simulations that this is not a real assumption. In reality, the results of actual measurements and detailed numerical simulation show that the velocity in wake region has a S-shape profile. Th...

Alireza Javaheri Farshad Torabi, Omid Dehghan Razieh Hamedi

The shape of wake behind a wind turbine is normally assumed to have a hat shape for the models used in wind farm layout optimization purposes; however, it is know from experimental tests and numerical simulations that this is not a real assumption. In reality, the results of actual measurements and detailed numerical simulation show that the velocity in wake region has a S-shape profile. The pr...

Journal: :energy equipment and systems 2015
razieh hamedi alireza javaheri omid dehghan farshad torabi

the shape of wake behind a wind turbine is normally assumed to have a hat shape for the models used in wind farm layout optimization purposes; however, it is know from experimental tests and numerical simulations that this is not a real assumption. in reality, the results of actual measurements and detailed numerical simulation show that the velocity in wake region has a s-shape profile. the pr...

Journal: :Journal of Fisheries and Marine Sciences Education 2016

1999
J.-H. Chen G. M. Faeth

The properties of turbulence generated by uniform fluxes of monodisperse spherical particles moving through a uniform flowing gas were studied experimentally, emphasizing the properties of the region surrounding individual wake disturbances, i.e., the turbulent inter-wake region. Mean and fluctuating values, probability density functions and energy spectra of streamwise and cross stream velocit...

Journal: :مکانیک سیالات و آیرودینامیک 0
عبدالامیر بک خوشنویس وحید برزنونی

the aerodynamics of road vehicles has frequently been studied in simplified geometries to separate the effect of various components on aerodynamic drag and on near wake flow dynamics. in this work, the characteristics of the near wake of a notch-back car model were investigated, using hot-wire anemometer. the main objectives of this study are to gain a better understanding of the flow structure...

Journal: :سیاست 0
احمد جانسیز استادیار گروه علوم سیاسی دانشکدۀ ادبیات و علوم انسانی دانشگاه گیلان محسن زمانی دانشجوی دکتری روابط بین الملل دانشکدۀ ادبیات و علوم انسانی دانشگاه گیلان

this article aims to explain how islamic fundamentalism in central asia could challenge afghan national security following the withdrawal of international forces. in this paper, the authors focusing on two jihadi islamists groups in central asia, called the imu (islamic movement of uzbekistan) and islamic jihad :union: (islamic jihadism of uzbekistan) believe that high adaptability in the wake ...

2004
YAO-TSU WU

A wake model for the free-streamline theory is proposed to treat the two-dimensional flow past an obstacle with a wake or cavity formation. In this model the wake flow is approximately described in the large by an equivalent potential flow such that along the wake boundary the pressure first assumes a prescribed constant under-pressure in a region downstream of the separation points (called the...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1994

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