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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 10    October 2019

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Adomian decomposition method simulation of von Kármán swrling bioconvection nanofluid flow
M D SHAMSHUDDIN1, S R MISHRA2, O ANWAR BEG3, A KADIR3

1. Department of Mathematics, Vaagdevi College of Engineering, Warangal, Telangana, India;
2. Department of Mathematics, Siksha ‘O’Anusandhan Deemed to be University, Khandagiri,
Bhubaneswar, Odisha, India;
3. Department of Aeronautical and Mechanical Engineering, University of Salford, Manchester,England, UK

Abstract:The study reveals analytically on the 3-dimensional viscous time-dependent gyrotactic bioconvection in swirling nanofluid flow past from a rotating disk. It is known that the deformation of the disk is along the radial direction. In addition to that Stefan blowing is considered. The Buongiorno nanofluid model is taken care of assuming the fluid to be dilute and we find Brownian motion and thermophoresis have dominant role on nanoscale unit. The primitive mass conservation equation, radial, tangential and axial momentum, heat, nano-particle concentration and micro-organism density function are developed in a cylindrical polar coordinate system with appropriate wall (disk surface) and free stream boundary conditions. This highly nonlinear, strongly coupled system of unsteady partial differential equations is normalized with the classical von Kármán and other transformations to render the boundary value problem into an ordinary differential system. The emerging 11th order system features an extensive range of dimensionless flow parameters, i.e., disk stretching rate, Brownian motion, thermophoresis, bioconvection Lewis number, unsteadiness parameter, ordinary Lewis number, Prandtl number, mass convective Biot number, Péclet number and Stefan blowing parameter. Solutions of the system are obtained with developed semi-analytical technique, i.e., Adomian decomposition method. Validation of the said problem is also conducted with earlier literature computed by Runge-Kutta shooting technique.

 

Key words: nanofluids; bioconvection; rotating disk bioreactors; von Kármán swirling flow; Stefan blowing; Adomian decomposition method (ADM)

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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