A Combined Macro and Microvascular Model for Whole Limb Heat Transfer

[+] Author and Article Information
W. J. Song, S. Weinbaum, L. M. Jiji

Department of Mechanical Engineering, The City College of The City University of New York, New York, N.Y. 10031

D. Lemons

Department of Rehabilitation Medicine, Columbia University College of Physicians and Surgeons, New York, N.Y. 10029

J Biomech Eng 110(4), 259-268 (Nov 01, 1988) (10 pages) doi:10.1115/1.3108440 History: Received July 09, 1987; Revised September 20, 1988; Online June 12, 2009


A new prototype model for whole limb heat transfer is proposed wherein the countercurrent heat exchange from the large central arteries and veins in the core of the limb is coupled to microvascular models for the surrounding muscle and the cutaneous tissue layers. The local microvascular temperature field in the muscle tissue is described by the bioheat equation of Weinbaum and Jiji [1]. The new model allows for an arbitrary axial variation of cross-sectional area and blood distribution between the muscle and cutaneous tissue, accounts for the blood flow to and heat loss from the hand and treats the venous return temperature and surface temperature distribution as unknowns that are determined as part of the solution to the overall boundary value problem. Representative solutions are presented for a wide range of environmental conditions for a limb in both the resting state and during exercise.

Copyright © 1988 by ASME
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