Exact solution of many heat conduction problems in engineering is frequently tedious and seldom warranted. Many analogue methods have in consequence been developed.
For steady-state problems the conducting sheet and electrolytic tank types appear to be the most convenient in use.
The solution of non-steady-state problems is generally best achieved through indirect analogy methods, whereby the partial differential equations characterizing the phenomenon are replaced by an approximating set of finite difference equations. Various networks for achieving this are reviewed and compared from the standpoint of economy, convenience and accuracy.
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