پديد آورنده :
نصيري، محمد
عنوان :
بررسي تجربي انتقال حرارت جابجايي اجباري در جريانهاي آرام و آشفته توسط نانو سيالات با سيالات پايه نيوتني و غير نيوتني در كانال غير مدور
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
ده،93ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
غلامرضا اعتماد، روح ا... باقري
توصيفگر ها :
عدد ناسلت , كانال حلقوي , كانال مربعي
تاريخ نمايه سازي :
16/5/90
استاد داور :
محسن نصر اصفهاني، مسعود حق شناس فرد، تورج توكلي
كد ايرانداك :
ID375 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Experimental Investigation on Newtonian and Non Newtonian Nanofluid Convective Heat Transfer through Noncircular Duct in Laminar and Turbulent Flows Mohammad Nasiri mohammadnasiri@yahoo com Date of submission June 14 2011 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree PhD Language Farsi st1 supervisor s Name Prof Seyed Gholamreza Etemad etemad@cc iut ac ir2nd supervisor s Name Prof Roholah Bagheri bagheri@cc iut ac irDepartment Graduate Coordinator Dr Hamid ZiloueiAbstractThis thesis is related to the experimental investigation of forced convective heat transfer through noncircularannular and square channels For this purpose we examined Newtonian nanofluids with water and ethyleneglycol as base fluids and Non Newtonian nanofluids with base 0 5 wt carboxymethyl cellulose solution basefluid using aluminum oxide and titanium dioxide nanoparticles Experiments were done under constant walltemperature boundary condition with both laminar and turbulent flow regimes Based on the experimentalresults both Newtonian and Non Newtonian nanofluids have better heat transfer performance in comparisonwith the base fluids through noncircular channels Heat transfer coefficient and Nusselt number of nanofluidsare higher than those of the base fluid Heat transfer coefficient is enhanced for both employed nanofluids andthe enhancement increases with increase of nanparticle concentration According to the results nanofluidscontaining aluminum oxide nanoparticles possess better heat transfer performance in comparison to thenanofluids containing titanium dioxide nanoparticles Furthermore we found that thermal performance ofNewtonian nanofluids in both channels is higher than that of non Newtonian nanofluids Comparison of theperformance of nanofluids through square and annular channels shows that there is a higher increase inconvective heat transfer coefficient and Nusselt number in square duct for both turbulent and laminar flows Based on the experimental results of this research some equations have been developed for nanofluid Nusseltnumber in square and annular channels KeywordsNanofluid Convective heat transfer coefficient Nusselt number Non circular channel
استاد راهنما :
غلامرضا اعتماد، روح ا... باقري
استاد داور :
محسن نصر اصفهاني، مسعود حق شناس فرد، تورج توكلي
