Multinode Unsteady Surface Element Method With Application to Contact Conductance Problem

[+] Author and Article Information
B. Litkouhi

Mechanical Engineering Department, Manhattan College, Riverdale, NY 10471

J. V. Beck

Mechanical Engineering Department, Michigan State University, East Lansing, MI 48824

J. Heat Transfer 108(2), 257-263 (May 01, 1986) (7 pages) doi:10.1115/1.3246913 History: Received April 06, 1984; Online October 20, 2009


The unsteady surface element method is a powerful numerical technique for solution of linear transient two- and three-dimensional heat transfer problems. Its development originated with the need of solving certain transient problems for which similar or dissimilar bodies are attached one to the other over a part of their surface boundaries. In this paper a multinode unsteady surface element (MUSE) method for two arbitrary geometries contacting over part of their surface boundaries is developed and formulated. The method starts with Duhamel’s integral (for arbitrary time and space variable boundary conditions) which is then approximated numerically in a piecewise manner over time and the boundaries of interest. To demonstrate the capability of the method, it is applied to the problem of two semi-infinite bodies initially at two different temperatures suddenly brought into perfect contact over a small circular region. The results show excellent agreement between the MUSE solution and the other existing solutions.

Copyright © 1986 by ASME
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