7268

6774

كارشناسي ارشد

مكانيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1391

ده، 80ص: مصور﴿رنگي﴾، جدول، نمودار

ص.ع. به فارسي و انگليسي

مهدي نيلي، احمد صداقت

محسن ثقفيان

21/8/91

احمد صابونچي، محمدرضا سليم پور

1396/09/21

كتابنامه

مكانيك

مهندسي مكانيك

ID6774

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

81 Numerical Simulation of Magneous Type Wind Turbines with Rotating Cylinders Mohsen Rashidinejad Meybodi rashidinejadmohsen@gmail com 18th September 2012 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Ahmad Sedaghat sedaghat@cc iut ac ir Mehdi Nili mahdinili@yahoo comAbstractA wind turbine is a device that converts kinetic energy from the wind also called wind energy intomechanical energy a process known as wind power If the mechanical energy is used to produce electricity the device may be called wind turbine or wind power plant If the mechanical energy is used to drivemachinery such as for grinding grain or pumping water the device is called a windmill or wind pump Similarly it may be called wind charger when it is used to charge batteries The result of over a millennium of windmill development and modern engineering today s wind turbines aremanufactured in a wide range of vertical and horizontal axis types The smallest turbines are used forapplications such as battery charging or auxiliary power on boats while large grid connected arrays ofturbines are becoming an increasingly important source of wind power produced commercial electricity The aim of this study is to numerically simulate the Magneous wind turbines with the rotational circularcylinders At first the fluid flow over stationary and rotational circular cylinders are assessed using someother numerical and experimental results From the results of this study it is observed that by using steady state assumption the results from the most of turbulence models has failed due to unsteady behaviour of theactual flow and defficiency of turbulence models to predict separated flows Therefor the transient flowsolver with the BSL turbulence model have used with proven better result in agreement with someexperimental data By varying the rotational velocity of the circular cylinders as means of the turbine impeller from 300 rpmto 8000 rpm the power coefficient are obtained versus the wind turbine tip speed ratio and also with thepower curve of some other conventional wind turbine Some correlation is used to relate the rotor rotationalvelocity to the cylinder rotational speed from the simulation results the benefit of using Magneous windturbine is assessed in comparison with other conventional wind turbine The thesis comprise five chapters In the first chapter the litreture of Magneous type wind turbines arereviewed In the second chapter the physical concept of Magneous effect in ideal flows are discussed In thethird chapter the governing Viscous fluid flow equations are given and the various turbulence models used inthis study are explored In chapter four the geometry of the problem are introduced and the simulation resultsare discussed In the final chapter of 5 the conclusion of this work and suggestion for future work is given Key wordsWind turbine rotational cylinder Magneous force numerical simulation

مهدي نيلي، احمد صداقت

محسن ثقفيان

احمد صابونچي، محمدرضا سليم پور