<DOC>
<DOCNO>
912
</DOCNO>
<TITLE>
the axisymmetric free-convection temperature field
along a vertical thin cylinder .
</TITLE>
<AUTHOR>
hama,p.r., recesso,j.v. and christiaens,j.
</AUTHOR>
<BIBLIO>
j. ae. scs. 1959, 335.
</BIBLIO>
<TEXT>
  with a view to studying the effect of strong transverse curvature
on boundary-layer problems, the axisymmetric free-convection
problem along a vertical thin cylinder is investigated
theoretically as well as experimentally .  a theory is developed
as an extension of the pohlhausen solution of a thick axisymmetric
laminar boundary layer by mark and by glauert and
lighthill .  experiments consist of a thermocouple survey of the
temperature field over an electrically-heated brass cylinder of
diameter and 10 ft. height and an interferometric study
of the density field over a bare tungsten wire of 0.02-in. diameter
and 5 ft. height .  the thermal-layer thicknesses are about five
and fifty times the radii of the cylinders, respectively .  experimental
results of the local heat-transfer coefficient are in excellent
agreement with the theory .  this, in turn, justifies the theories
of laminar boundary layer along a thin cylinder, at least indirectly .
</TEXT>
</DOC>
