Asymptotic study of unsteady mass transfer through a rigid artery with multiple irregular stenoses

Roy, AK and Beg, OA ORCID: 2021, 'Asymptotic study of unsteady mass transfer through a rigid artery with multiple irregular stenoses' , Applied Mathematics and Computation, 410 , p. 126485.

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The present article examines the transport of species in streaming blood through a rigid artery in the presence of multi-irregular stenosis. The carrier fluid i.e., blood is assumed to be non-Newtonian fluid (Casson’s viscoplastic model is used) and the arterial wall is considered to be rigid. A robust model is developed for non-Newtonian flow and hydrodynamic dispersion with first-order chemical reaction on the arterial boundary in multiple irregular stenosed arterial geometries. Multiple scale solutions of the nondimensional boundary value problem are presented. Asymptotic expressions are developed for velocity and shear stress. Extensive visualization of velocity, concentration, and other flow characteristics is included for various stenotic scenarios, Péclet numbers, and Damköhler numbers. Significant modification in hemodynamic characteristics is computed with viscoplasticity. Mean concentration is also dramatically modified with yield stress and Péclet and Damköhler numbers.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Applied Mathematics and Computation
Publisher: Elsevier
ISSN: 0096-3003
Related URLs:
Depositing User: OA Beg
Date Deposited: 29 Jun 2021 08:23
Last Modified: 11 Jul 2022 02:30

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