پديد آورنده :
سميعي يزدي، هدي
عنوان :
محاسبه ويسكوزيته سيالات در چگالي هاي بالا با استفاده از نظريه اصطكاك و پتانسيل جفت موثر
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شيمي فيزيك
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
دوازده، 71، [I] ص.: مصور، جدول، شكل، نمودار
استاد راهنما :
يوسف غايب، بيژن نجفي
توصيفگر ها :
اصطكاك كولمب , نظريه جنبشي گازها , الكتروستاتيك , نيروي القايي،تفرق , گازهاي تك اتمي، چند اتمي , نظريه چاپمن-انسكوگ
استاد داور :
عزت كشاورزي، ناهيد فرضي
تاريخ ورود اطلاعات :
1396/10/26
چكيده فارسي :
به فارسي و انگليسي: قابل رويت درنسخه ديجيتالي
چكيده انگليسي :
AbstractThere are several reported correlation functions for the calculation of viscosity offluids which are expressed in terms of density instead of pressure which is the desiredquantity in most of engineering works In this thesis friction theory and van derWaals equation of states are used to derive correlation functions in terms of pressurefor the viscosity calculation The van der Waals equation of states was used for thecalculation of repulsive and attractive pressures The fundamental difference betweenthe friction theory and other available theories is the fact that the viscosity of densefluids which characterizes pure shear flow is approached as a mechanical rather thana transport property and it is not until the approaching of the dilute gas limit that thekinetic principles of the theory of gases become important Thus since this newtheory is applicable to dense fluids in most cases it should be used together with adilute gas model in order to cover the low to high pressure range Therefore theviscosity of five typical gases are calculated in terms of pressure over a widetemperature pressurerange with average relative error less than Z In the second part of this thesis viscosity of monatomic and polyatomicgases over high density rang up to about mol per liter is calculated by using theeffective potential parameters in the Chapman Enskog theory It is assumed that themathematical form of the effective potential function is the same as the isolatedpotential function with this distinction that the potential parameters arethermodynamic state dependent It is shown that the distance potential parameter dependency is so insignificant that it is possible to take as its value of isolatedpotential function parameter The density dependencyof potential well is shown by aquadratic pad equation In this way the viscosity of 0 typical gasesis calculated by less than Z error t lJt Af
استاد راهنما :
يوسف غايب، بيژن نجفي
استاد داور :
عزت كشاورزي، ناهيد فرضي
