<DOC>
<DOCNO>
254
</DOCNO>
<TITLE>
boundary layers with suction and injection . a review
of published work on skin friction .
</TITLE>
<AUTHOR>
craven,a.h.
</AUTHOR>
<BIBLIO>
coa r136.
</BIBLIO>
<TEXT>
  available data on the effects of suction and injection on skin
friction are summarised and compared .
  it is shown that injection into a turbulent boundary layer can
produce a skin friction coefficient lower than the laminar value at the
same reynolds number on an impermeable plate .
</TEXT>
</DOC>
