Abstract
The problem of determining fluid discharge rates from the side (as
opposed to the bottom) of punctured cylindrical and spherical vessels
was recently addressed by Crowl1. Both vertical and horizontal cylindrical
configurations were examined. Analytical solutions to the spherical
and vertical cylindrical problems were obtained in rather straightforward
fashion. However, the geometry is considerably more complex in the
case of the horizontal cylindrical configuration. Crowl does not
present an analytical solution to this more complicated problem,
but employs numerical methods in order to integrate the governing
differential material balance equation. The purpose of this communication
is to present a direct analytical solution to the problem of side
drainage from a punctured horizontal cylindrical vessel with the
use of elliptic integrals, values of which are tabulated in numerous
mathematical handbooks. Because of their inherently greater accuracy,
analytical solutions can serve as standards or benchmarks against
which to check the reliability of numerical solutions and, in addition,
are generally readily programmable on computers and/or spreadsheets.
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