Abstract
The hydrodynamical problem of flow in proximal renal tubule is investigated by considering axisymmetric flow of a viscous, incompressible fluid through a long narrow tube of varying cross-section with reabsorption at the wall. Two cases for reabsorption have been studied (i) when the bulk flow,Q, decays exponentially with the axial distancex, and (ii) whenQ is an arbitrary function ofx such thatQ-Q 0 can be expressed as a Fourier integral (whereQ 0 is the flux atx=0). The analytic expressions for flow variables have been obtained by applying perturbation method in terms of wall parameter ε. The effects of ε on pressure drop across the tube, radial velocity and wall shear have been studied in the case of exponentially decaying bulk flow and it has been found that the results are in agreement with the existing ones for the renal tubules.
Similar content being viewed by others
Literature
Babsky, E. B., B. I. Khoolorov, G. I. Kositsky and A. A. Zubkov. 1970.Human Physiology, Vol. I, pp. 335. Moscow: Mir Publications.
Kelman, R. B. 1962. “A Theoretical Note on Experiment Flow in the Proximal Part of the Mammalian Nephron.”Bull. Math. Biophys.,24, 303–317.
Macey, R. I. 1963. “Pressure Flow Patterns in a Cylinder with Reabsorbing Walls.”Bull. Math. Biophys. 25, 1–9.
— 1965. “Hydrodynamics of Renal Tubule”Bull. Math. Biophys.,27, 117–124.
Marshall, E. A. and E. A. Trowbridge. 1974. “Flow of a Newtonian Fluid Through a Permeable Tube: the Application to the Proximal Renal Tubule.”Bull. Math. Biol.,36, 457–476.
Wesson, L. C., Jr. 1954. “A Theoretical Analysis of Urea Excretion by the Mammalian Kidney.”Am. J. Physiol.,179, 364–371.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Radhakrishnamacharya, G., Chandra, P. & Kaimal, M.R. A hydrodynamical study of the flow in renal tubules. Bltn Mathcal Biology 43, 151–163 (1981). https://doi.org/10.1007/BF02459440
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02459440