<DOC>
<DOCNO>
121
</DOCNO>
<TITLE>
a theory for base pressures in transonic and supersonic
flow .
</TITLE>
<AUTHOR>
korst,h.h.
</AUTHOR>
<BIBLIO>
j.app.mech. 23, 1956, 593.
</BIBLIO>
<TEXT>
  a physical flow model is devised based on the concepts of
interaction between the dissipative shear flow and the adjacent
free stream and the conservation of mass in the
wake .  four flow components are integrated in the model,.
namely, the flow approaching the trailing edge, the expansion
around the trailing edge, the mixing within the
free-jet boundary, and the recompression at the end of the
wake .  a unique and stable solution results for the base
pressure .  theoretical results obtained for thin approaching
boundary layer do not require empirical information
and are, therefore, best suited to evaluate the merits of the
theory .  here emphasized is the case of isoenergetic constant-pressure
mixing in the turbulent free-jet boundary
and agreement is found between theory and experimental
data .
</TEXT>
</DOC>
