پديد آورنده :
اسدي، طاهره
عنوان :
بررسي عددي انتقال جرم درخم 90 درجه درجريان متلاطم
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي شيمي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
سيزده، 92، [II]ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به: فارسي و انگليسي
استاد راهنما :
محسن نصر اصفهاني
توصيفگر ها :
جريان هاي چرخشي , مومنتوم , گسسته سازي , آنولوژي چيلتون- كلبرن
تاريخ نمايه سازي :
05/04/87
استاد داور :
محمد چالكش اميري، محمود اشرفي زاده
چكيده فارسي :
به فارسي و انگليسي: قابل رؤيت در نسخه ديجيتال
چكيده انگليسي :
Abstract This thesis aimed the numerical analysis of fluid field and mass transfer for turbulent flow in a 90 The RNG version of k model was used for turbulence modeling At first the continuity and momentum equations were solved for turbulent flow through a 3 D bend and flow field was obtained in different stations of the bend Also for validation of the results the predicted velocity profiles at 30 75 and the exit of the elbow stations were compared with the experimental data and showed good agreement Then by solving the component mass continuity equation for the naphthalene air system the mass transfer coefficient in the bend and the ratio of it to the mass transfer coefficient for fully developed flow in a straight pipe Sh Shp in different stations of the bend were obtained For all these cases the maximum of Sh Shp was observed at a distance about one diameter downstream of the elbow and changes between 1 26 to 1 46 Also a correlation for predicting the maximum mass transfer coefficient was developed This correlation is a function of Reynolds number Schmidt number and curvature ratio and shows that only the curvature ratio has the significant effect on maximum of this ratio These results showed that Sh Shp decreases about 20 percent as curvature ratio increases from 1 5 to 2 5 Results that obtained from numerical solution were in good agreement with the mass transfer coefficient obtained from the friction factor and by using the Chilton Colborn analogy Finally the numerical analysis results were compared with the experimental data for a naphthalene air system and showed good agreement pdfMachine is a pdf writer that produces quality PDF files with ease Get yours now Thank you very much I can use Acrobat Distiller or the Acrobat PDFWriter but I consider your product a lot easier to use and much preferable to Adobe s A Sarras USA
استاد راهنما :
محسن نصر اصفهاني
استاد داور :
محمد چالكش اميري، محمود اشرفي زاده
