Unsteady boundary layer flow and heat transfer over an exponentially shrinking sheet with suction in a copper-water nanofluid

作     者：Aurang Zaib Krishnendu Bhattacharyya Sharidan Shafie 

作者机构：Department of Mathematical SciencesFederal Urdu University of ArtsScience & Technology Department of MathematicsThe University of Burdwan Department of Mathematical SciencesFaculty of ScienceUniversiti Teknologi Malaysia 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2015年第22卷第12期

页      面：4856-4863页

核心收录：

学科分类：0810[工学-信息与通信工程] 080704[工学-流体机械及工程] 0806[工学-冶金工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Board for Higher Mathematics (NBHM),Department of Atomic Energy,Government of India for the financial support in pursuing this work the financial support from MOHE and the Research Management Center-UTM through FRGS and RUG vote number 4F109 and 02H80 for this research 

主　　题：unsteady boundary layer heat transfer nanofluid exponentially shrinking sheet dual non-similar solutions 

摘      要：An analysis of unsteady boundary layer flow and heat transfer over an exponentially shrinking porous sheet filled with a copper-water nanofluid is *** is treated as a base *** the investigation,non-uniform mass suction through the porous sheet is *** Keller-box method the transformed equations are solved *** results of skin friction coefficient,the local Nusselt number as well as the velocity and temperature profiles are presented for different flow *** results showed that the dual non-similar solutions exist only when certain amount of mass suction is applied through the porous sheet for various unsteady parameters and nanoparticle volume *** ranges of suction where dual non-similar solution exists,become larger when values of unsteady parameter as well as nanoparticle volume fraction ***,due to unsteadiness of flow dynamics and the presence of nanoparticles in flow field,the requirement of mass suction for existence of solution of boundary layer flow past an exponentially shrinking sheet is ***,the velocity boundary layer thickness decreases and thermal boundary layer thickness increases with increasing of nanoparticle volume fraction in both non-similar ***,for stronger mass suction,the velocity boundary layer thickness becomes thinner for the first solution and the effect is opposite in the case of second *** temperature inside the boundary layer increases with nanoparticle volume fraction and decreases with mass ***,for the unsteadiness and for the presence of nanoparticles,the flow separation is delayed to some extent.