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From: smpod@csd.lerc.nasa.gov (Steve Podleski (Sverdrup))
Newsgroups: sci.military
Subject: Re: Reynolds number
Message-ID: <1990Jun6.142145.5135@cbnews.att.com>
Date: 6 Jun 90 14:21:45 GMT
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From: "Steve Podleski (Sverdrup)" <smpod@csd.lerc.nasa.gov>
In article <1531@cirrusl.UUCP>, you write...
:Since no professional aerodynamicist has said anything, I'll take a
:stab at it. I warn you, this will get long-winded, as I'm basically
:thinking out aloud.
:	Reynolds number (Rn) is a dimensionless number used in establishing
:flow conditions with incompressible fluids, just like Mach number can
:be used to compare flow conditions with compressible fluids (really,
:gases). ..........text deleted....

   Your explanation of Reynold's number is very good except that Rn is
   also used for compressible flow.  Mach number is an ADDITIONAL parameter
   needed to describe compressible flow.