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نمایش تعداد 1-10 از 95

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    Development of a Two-Dimensional CFD Code to Simulation of a Flapping Foil Problem at Low Reynolds Numbers 

    نوع: Conference Paper
    نویسنده : alireza, rezaei; morteza, namvar; farhad, ghadak
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    Numerical study of the separation point for external flows 

    نوع: Conference Paper
    نویسنده : محمود پسندیده فرد; مهران محمدی فرهنگی; امیر امیدوار; Mahmoud Pasandidehfard; Mehran Mohammadi Farhangi; amir omidvar
    سال: 2008
    خلاصه:

    In this paper Numerical simulations are performed using the control volume method to obtain separation point of two-dimensional laminar, steady, incompressible flows. Low Reynolds number flows over cylinder, NACA 0012 and ...

    A Study on Processing and Characterization of BNi2 Nickel-based Amorphous Brazing Foil 

    نوع: Conference Paper
    نویسنده : B, Binesh; A, Jazayeri Gharehbagh
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    Proposed kinematic model for fish-like swimming with two pitch motions 

    نوع: Journal Paper
    نویسنده : جواد ابوالفضلی اصفهانی; حمیدرضا کرباسیان; ابراهیم براتی باقرآباد; Javad Abolfazli Esfahani; hamid reza karbasian; ebrahim barati
    سال: 2015
    خلاصه:

    In the present investigation a new kinematic model for a fish-like swimming is presented. In this model the foil has two rotational motions in order to approach of the fish swimming performance. This kinematic model is a generalized model...

    Simulation of power extraction from tidal currents by flapping foil hydrokinetic turbines in tandem formation 

    نوع: Journal Paper
    نویسنده : حمیدرضا کرباسیان; جواد ابوالفضلی اصفهانی; E. Barati; hamid reza karbasian; Javad Abolfazli Esfahani
    سال: 2015
    خلاصه:

    to harness extracted power. As a result of this investigation,

    the introduced model and code can be used as one of initial tools to predict power capacity for obtaining

    vast concept regarding tidal sites with the flapping foil hydrokinetic...

    The power extraction by flapping foil hydrokinetic turbine in swing arm mode 

    نوع: Journal Paper
    نویسنده : H.R. Karbasian; جواد ابوالفضلی اصفهانی; E. Barati; Javad Abolfazli Esfahani
    سال: 2016
    خلاصه:

    In the present study the power extraction capability by flapping foil hydrokinetic turbine is investigated.

    The heaving motion of the foil is considered in two different motion patterns including the simple linear

    translational motion...

    Investigations on optimization of kinematics parameters of oscillating foil for energy extraction from tidal current flows 

    نوع: Conference Paper
    نویسنده : E. Barati; جواد ابوالفضلی اصفهانی; حمیدرضا کرباسیان; Javad Abolfazli Esfahani; hamid reza karbasian
    سال: 2012
    خلاصه:

    In present work, effect of different kinematics parameters on oscillating foil energy extraction is numerically investigated. It is noted that velocity of oscillating foil relative to free stream velocity (Tip Speed Ratio) has significant effect...

    The measurements of thermal neutron flux distribution in a paraffin phantom 

    نوع: Journal Paper
    نویسنده : پریسا اخلاقی; لاله رفعت متولی; سیدهاشم میری حکیم آباد; Parisa Akhlaghi; Laleh Rafat Motavali; Seyyed Hashem Miri Hakimabad
    سال: 2013
    خلاصه:

    The term ‘thermal flux’ implies a Maxwellian distribution of velocity and energy corresponding

    to the most probable velocity of 2200 m s−1 at 293.4 K. In order to measure the thermal

    neutron flux density, the foil activation method...

    Enhancement of Propulsive Performance of Flapping Foil by Fish-Like Motion Pattern 

    نوع: Journal Paper
    نویسنده : حمیدرضا کرباسیان; جواد ابوالفضلی اصفهانی; hamid reza karbasian; Javad Abolfazli Esfahani
    سال: 2017
    خلاصه:

    In this study, the flapping foil propulsion with a novel motion pattern is numerically investigated. The proposed motion pattern is inspired from kinematics of fish species, such as marine mammals, utilizing a foil-shaped tail to swim in aquatic...

    Optimization of flapping-wing micro aircrafts based on the kinematic parameters using genetic algorithm method 

    نوع: Journal Paper
    نویسنده : مهدی ابوالفضلی اصفهانی; حمیدرضا کرباسیان; جواد ابوالفضلی اصفهانی; Ebrahim Barati; Mahdi Abolfazli Esfahani; hamid reza karbasian; Javad Abolfazli Esfahani
    سال: 2013
    خلاصه:

    In this paper the optimization of kinematics, which has great influence in performance of flapping foil propulsion, is investigated. The purpose of optimization is to design a flapping-wing micro aircraft with appropriate kinematics and aerodynamics...

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