title: The exterior unsteady viscous flow and heat transfer due to a porous expanding or contracting cylinder.
abstract: Since the vessels in the biological tissues are characterized by low seepage Reynolds numbers and contracting or expanding walls, more attention is paid on the viscous flow outside the porous pipe with small expansion or contraction. This paper presents a numerical solution of the flow and heat transfer outside an expanding or contracting porous cylinder. The coupled nonlinear similarity equations are solved by Bvp4c, which is a collocation method with MATLAB. The effects of the different physical parameters, namely the permeability Reynolds number,the expansion ratio and the Prandtl number, on the velocity and temperature distribution are obtained and the results are shown graphically.
authors.affiliation: Department of Applied Mathematics, University of Science and Technology, Beijing, 100083, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Applied Mathematics, University of Science and Technology, Beijing, 100083, China.
authors.forename: Xinhui
authors.initials: X
authors.lastname: Si
authors.affiliation: Department of Applied Mathematics, University of Science and Technology, Beijing, 100083, China.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Shen
authors.affiliation: Department of Applied Mathematics, University of Science and Technology, Beijing, 100083, China.
authors.forename: Liancun
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Numerical Analysis School of Engineering, Physics and Mathematics, University of Dundee, DD1 4HN, Scotland.
authors.forename: Ping
authors.initials: P
authors.lastname: Lin
mesh_terms: D001826:Body Fluids / Q000502:physiology*; D001831:Body Temperature / Q000502:physiology*; D003198:Computer Simulation; D055119:Elastic Modulus / Q000502:physiology; D004735:Energy Transfer / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D010528:Peristalsis / Q000502:physiology*; D016062:Porosity; D011673:Pulsatile Flow / Q000502:physiology*; D012212:Rheology / Q000379:methods; D013696:Temperature; D013814:Thermal Conductivity; D014783:Viscosity
keywords: Expanding porous cylinder; expansion ratio; heat transfer; similarity solution