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Influence of temperature dependent heat source/sink on transient MHD free convective flow in an infinite rigid impermeable vertical cylinder with chemical reaction

作     者:Naveen Dwivedi Ashok Kumar Singh Nirmal C.Sacheti 

作者机构:Department of MathematicsInstitute of ScienceBanaras Hindu UniversityVaranasi 221005India Department of MathematicsSahu Jain CollegeNajibabadAffiliated to M.J.P.Rohilkhand UniversityBareilly 246763India Retired ProfessorDepartment of MathematicsCollege of ScienceSultan Qaboos UniversityAl Khod PC 123MuscatSultanate of Oman 

出 版 物:《Propulsion and Power Research》 (推进与动力(英文))

年 卷 期:2023年第12卷第4期

页      面:568-583页

核心收录:

学科分类:080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学(可授工学、理学学位)] 

基  金:The author Naveen Dwivedi is thankful to the University Grant Commission New Delhi for financial support(UGC Ref.No.1274/PWD) 

主  题:Circular cylinder Hydromagnetic transient flow Chemical reaction Source/sink Free convection 

摘      要:It is increasingly apparent that the inclusion of mass transfer aspects,together with certain thermal conditions,in the momentum and energy equations governing MHD flows leads to a numbers of real life *** this in view,we have attempted an exact analysis of heat and mass transfer aspects in transient hydromagnetic free convective flow of an incompressible viscous fluid through a vertical pipe under an externally applied magnetic field,assuming presence of chemical reaction and heat source/*** governing PDEs,which simplify to a set of 3 linear ODEs in the physical set up considered here,have been solved using Laplace transform technique,with solutions for key physical variables presented in the term of Bessel and modified Bessel *** influence of governing non-dimensional parameters,namely,Hartmann number,Schmidt number,source/sink parameter,Prandtl number and chemical reaction parameter,has been illustrated on the developing velocity and some concentration *** important quantities of engineering interest-surface skin friction and volumetric flow rates-have been computed too and *** notable finding worth mentioning are:(a)heat source presence causes higher fluid velocity as compared to the heat sink;(b)all important surface shear stress can be suitably controlled,among others,by chemical reaction parameter and Schmidt *** key challenge of this study has been to obtain exact closed-form solutions of the field equations,including cumbersome Laplace *** study finds innovative applications in the emerging fields such as magnetic materials processing,chemical processes,solar energy systems,etc.

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