Mechanical study of blood flow through a permeable capillary with slippery wall

J Mech Behav Biomed Mater. 2024 Feb:150:106265. doi: 10.1016/j.jmbbm.2023.106265. Epub 2023 Nov 24.

Abstract

This research presents the mechanical behavior of blood flow through capillary having smooth inner surface. In this study modelling of blood flow via permeable and lubricated capillary caused by nutrients re-absorption has been done by the help of laws of momentum and mass. The nutrients re-absorption is assumed to be constant and inner walls of the capillary are smooth and slippery therefore slip condition on the velocity and constant rate in vertical direction at the wall has considered. The Kelvin Voigt model is employed to simulate blood flow via capillaries, and results for pressure, blood flow pattern, and shear force necessary for blood flow are discovered by recursive approach. Numerical results for nutrient re-absorption from the blood and impact of smooth and slippery surfaces on blood flow are shown through graphs. The novelty of the research invents that the smoothness and slickness of capillary wall is a crucial presumption to examine the blood as non-Newtonian fluid via capillary.

Keywords: Creeping flow; Kelvin voigt fluid model; Permeable capillary; Recursive approach; Smooth and slippery walls.

MeSH terms

  • Blood Flow Velocity / physiology
  • Capillaries* / physiology
  • Computer Simulation
  • Hemodynamics
  • Models, Cardiovascular*
  • Stress, Mechanical