02 اردیبهشت 1403
شعيب خانمحمدي

شعیب خانمحمدی

مرتبه علمی: دانشیار
نشانی: کرمانشاه-بزرگراه امام خمینی(ره) - دانشگاه صنعتی کرمانشاه- دانشکده مهندسی- گروه مکانیک - کدپستی: 6715685420
تحصیلات: دکترای تخصصی / مهندسی مکانیک
تلفن: 0833-8305001
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان
Triple-objective optimization of a double-tube heat exchanger with elliptic cross section in the presence TiO2 nanofluid
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Elliptic cross section  TiO2  Specific entropy generation  Triple-objective optimization
پژوهشگران شعیب خانمحمدی (نفر اول)، زینب رحیمی (نفر دوم)، صابر خانمحمدی (نفر سوم)، مسعود افرند (نفر چهارم)

چکیده

The present paper deals with numerical simulation and triple-objective optimization of a double-tube heat exchanger equipped with an elliptic cross section in the presence of TiO2 nanofluid. A CFD simulation is done to find the thermal, fluid flow, and entropy generation behavior of suggested heat exchanger configuration. The results indicate that the change of geometrical and operational parameters has different influences on the suggested heat exchanger performance. Findings show that increasing the Reynolds number from 10,000 to 50,000 with TiO2 concentration of 0.3% results in increasing overall heat transfer coefficient from 9445.8 to 14,622 W m-2 K-1 for the spiral diameter of 220 mm. The results of specific entropy generation infer that in the Reynolds number of 4000 with changing TiO2 particle concentration from 0 (pure water) to 0.3%, the specific entropy generation increases from 0.97 to 1.209 kJ kg-1 K-1. A triple-objective optimization with overall heat transfer, friction factor, and specific entropy generation as objective functions, and nanoparticle concentration, Reynolds number, and spiral diameter as decision variables, is done. Different states regarding three objectives introduces as optimum studied system.