نجمه حاجی علی گل
دانشجوی دکتری، دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس
[ 1 ] - مطالعه اثر زاویه قرارگیری محفظه و جهت حرکت دیوارهای متحرک آن روی جابجایی ترکیبی نانوسیال با خواص متغیر
دراین مقاله اثر زاویه قرارگیری محفظه مربعی شکل و جهت حرکت دیواره‌ها روی جابجایی ترکیبی نانوسیال در دو حالت متفاوت بررسی شده است. در حالت اول جابجایی اجباری و طبیعی یکدیگر را تقویت می‌نمایند ولی در حالت دوم اثر مخالف روی یکدیگر دارند. زاویه قرارگیری محفظه از صفر تا 90 درجه تغییر داده شده است. مدلسازی‌ها برای شرایطی که رسانایی و ویسکوزیته نانوسیال آب-اکسید آلومینیوم با دما و غلظت نانوذره متغیر فر...
[ 2 ] - Numerical Study of Mixed Convection in a Lid-Driven Enclosure with a Centered Body Using Nanofluid Variable Properties
In the present study, mixed convection laminar flow around an adiabatic body in a Lid-driven enclosure filled with nanofluid using variable thermal conductivity and variable viscosity is numerically investigated. The fluid around the body in the enclosure is a water- based nanofluid containing Al2O3 nanoparticles. The Vertical enclosure’s walls are maintained at constant cold temperature an...
[ 3 ] - Laminar Mixed Convection of Al2O3-Water Nanofluid in a Three-Dimensional Microchannel
The fluid flow and heat transfer in a three-dimensional microchannel filled with Al2O3- water nanofluid is numerically investigated. The hybrid scheme is used to discretize the convection terms and SIMPLER algorithm is adopted to couple the velocity and pressure field in the momentum equations. The temperature fields, variation of horizontal velocity along the centre line of the channel, a...
[ 4 ] - Laminar mixed convection of Cu-water nano-fluid in two- sided lid-driven enclosures
The fluid flow and heat transfer in lid-driven enclosures filled with Cu-water nanofluid is numerically investigated. The moving vertical walls of the enclosure are maintained in a constant temperature, while the horizontal walls are insulated. The hybrid scheme is used to discretize the convection terms and SIMPLER algorithm is adopted to couple the velocity field and pressure in the momentum...
[ 5 ] - Effect of Al2O3-water nanofluid on heat transfer and pressure drop in a three-dimensional microchannel
The fluid flow and heat transfer in a three-dimensional microchannel filled with Al2O3- water nanofluid is numerically investigated. The hybrid scheme is used to discretize the convection terms and SIMPLER algorithm is adopted to couple the velocity and pressure field in the momentum equations. The thermal and flow fields were analyzed using different volume fractions of n...
[ 6 ] - Effect of Al2O3-water nanofluid on heat transfer and pressure drop in a three-dimensional microchannel
The fluid flow and heat transfer in a three-dimensional microchannel filled with Al2O3- water nanofluid is numerically investigated. The hybrid scheme is used to discretize the convection terms and SIMPLER algorithm is adopted to couple the velocity and pressure field in the momentum equations. The thermal and flow fields were analyzed using different volume fractions of n...
[ 7 ] - Investigation of Air Turbulence Intensity Effect on the Flame Structure in Different Flame Holder Geometry
In this paper, the effect of air turbulence intensity on the flame structure in various radii and lengths of a flame holder numerically studied. Finite volume method is used to solve the governing equations. The obtained numerical results using realizable k-ε and β-PDF models show a good agreement with the experimental data. The results show that flame holder with greater lengths yield shorter ...
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