پديد آورنده :
يوسف رادمندي ، مسعود
عنوان :
تحليل عددي عملكرد سيستم خشك كن بستر سيال
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
﴿مهندسي شيمي﴾
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
شانزده، 109، [I] ص.: مصور، جدول، نمودار
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
غلام رضا اعتماد ، شاپور رود پيما
استاد داور :
احمد محب ، ابراهيم شيراني
تاريخ ورود اطلاعات :
1396/02/31
رشته تحصيلي :
مهندسي شيمي
چكيده فارسي :
به فارسي و انگليسي : قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Abstract In this research flow field heat transfer and mass transfer in a batch fluidized beddryer with specific dimensions have been investigated numerically Drying gas is hotdry gas and the solid particles are unporous and wet The flow in dryer is assumedtwo dimensional axisymmetric turbulent incompressible and unsteady In order tomodeling the system a combination of Eulerian Eulerian and Eulerian Lagrangianapproaches have been applied The drying gas has uniform velocity and temperatureprofiles in the inlet of the dyer The atmospheric conditions exist in the outlet of thedryer and wall of the dryer assumed to be adiabatic Equations of the model are solvedwith appropriate boundary conditions and time step for optimized network using thefinite difference numerical method based on control volume In order to prove theaccuracy of the solving method the problem is simulated in a specific case and theresults are compared with available experimental data The comparison shows a goodagreement The effects of gas inlet velocity particles diameter particles density andbed depth on flow field and the effects of gas inlet velocity gas inlet temperatureand solid particles initial moisture on heat transfer and mass transfer field have beeninvestigated Results indicate that the bed expansion ratio increases with increasing inthe velocity and the bubbles form near the wall The bed expansion ratio decreaseswith increasing in the solid particles diameter and the bubbles form in the center ofthe bed The bed expansion ratio increases with decreasing in the solid particlesdensity and the bubbles form near the wall Also the region of the bed which has notany significant change increases The bed expansion ratio decreases with increasingin the bed depth The evaporation rate increases with increasing in the velocity gastemperature and solid particles initial moisture and finally the higher temperaturedrop occurs in the gas with increasing in the velocity decreasing in the gastemperature and increasing in the solid particles initial moisture
استاد راهنما :
غلام رضا اعتماد ، شاپور رود پيما
استاد داور :
احمد محب ، ابراهيم شيراني
