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Transient Free Convective Flow of CNT Water Nanofluid with Heat Transfer from a Moving Cylinder

Author(s):

C. Sridevi* and A. Sailakumari   Pages 1 - 17 ( 17 )

Abstract:


Background: In this paper, transient two-dimensional laminar boundary layer viscous incompressible free convective flow of water based nanofluid with carbon nanotubes (CNTs) past a moving vertical cylinder with variable surface temperature is studied numerically in the presence of thermal radiation and heat generation.

Methods: The prevailing partial differential equations which model the flow with initial and boundary conditions are solved by implicit finite difference method of Crank Nicolson type which is unconditionally stable and convergent.

Results: Influence of Grashof number (Gr), nanoparticle volume fraction ( ), heat generation parameter (Q), temperature exponent (m), radiation parameter (N) and time (t) on velocity and temperature profiles are sketched graphically and elaborated comprehensively.

Conclusion: Analysis of Nusselt number and Skin friction coefficient are also discussed numerically for both single wall carbon nanotubes (SWCNTs) and multi wall carbon nanotubes (MWCNTs).

Keywords:

Carbon nanotubes, water based nanofluid, free convection, implicit finite difference numerical method, transient flow, vertical cylinder, thermal radiation, heat generation.

Affiliation:

Research Scholar, Department of Mathematics, JNTUA College of Engineering Anantapur, A.P., Department of Mathematics, JNTUA College of Engineering Anantapur, A.P.



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