<DOC>
<DOCNO>
283
</DOCNO>
<TITLE>
laminar heat transfer around blunt bodies in dissociated
air .
</TITLE>
<AUTHOR>
kemp,n.h., rose,p.h. and detra,r.w.
</AUTHOR>
<BIBLIO>
j.ae.sc. 26, 1959.
</BIBLIO>
<TEXT>
  a method of predicting laminar heat-transfer rates to blunt,
highly cooled bodies with constant wall temperature in dissociated
air flow is developed .  attention is restricted to the case of axisymmetric
bodies at zero incidence, although two-dimensional
bodies could be treated the same way .  the method is based on
the use of the /local similarity/ concept and an extension of the
ideas used by fay and riddell .  a simple formula is given for
predicting the ratio of local heat-transfer rate to stagnation-point
rate .  it depends on wall conditions and pressure distribution,
but not on the thermodynamic or transport properties of the hot
external flow, except at the stagnation point .
  experimental heat-transfer rates obtained with correct stagnation-point
simulation and high wall cooling in shock tubes are
also presented and compared with the theoretical predictions .
on the whole, the agreement is good, although in regions of rapidly
varying pressure there is evidence that the local similarity
assumption breaks down, and the theory underestimates the
actual heat-transfer rate by up to 25 per cent .
</TEXT>
</DOC>
