Index of /turbdata/agard/chapter6/SHL20

Name	Last modified	Size

Parent Directory		-
barre/	2011-06-20 13:45	-
menaa/	2011-06-20 13:45	-
quine/	2011-06-20 13:45	-
Data for the supersonic mixing layers

Data takers: J.P. Dussauge, S. Barre,
Quine, Menaa.

Universite d'aix Marseille

Supersonic turbulent mixing layer.
   
       TEST  case 20

--------- WARNING -----------------------------------

Two set of data are provided: the directories Quine and
Barre are concerned with a first wind tunnel
arrangement. The directory Menaa concerns a
slight different arrangement  of the wind tunnel. The
results obtained for the data common to Quine-Barre and
Menaa are comparable but
not exactly identical. The data provided are
complementary. The user then should consider the two
sets of results as INDEPENDENT FLOWS, unless some
averaging process (not provided by the authors) can be
used to collapse the data.

------------------------------------------------------------


Quine:
Quine contains the mean flow data for a mixing layer at a nominal convective 
Mach number Mc=0.62. The flow is documented in Barre, Quine, Dussauge 1994, 
J. Fluid Mech, vol. 259, pp. 47-78.There is a file for each section. The generic 
name of the files is GmquXXX.dat, where XXX is the distance (in mm) of the 
section from the trailing edge of the separating plate. For example the file 
Gmqu016.dat contains the measurements in the section x=16 mm. The exception 
is Gmqum05.dat which contains the data in the section x=-5mm. This is a section 
in the turbulent boundary layer upstream of the trailing edge, on the supersonic 
side.
The symbols are:

Po and pio: Stagnation pressure in the supersonic external flow. Po is expressed in 
N/m2 (Denoted by Pa for Pascal in French notations)
To: Total temperature in the supersonic external flow.
Y: vertical distance in mm. The origin y=0 is on the separating plate.
Pi: Stagnation pressure.
T: Static temperature in Kelvin.
U: velocity in m/s
Ro: density in kg/m3.
Reynolds: Reynolds number for a length of 1 micron and for a viscosity at the 
stagnation temperature.
Delts: entropy in S.I. units. Zero entropy is found in the supersonic external flow.
Mu: dynamic viscosity in S.I. units.

barre

barre contains turbulence data for the same mixing layer as Quine. The generic 
name is VarXXX.dat, with the same convention for XXX as in GmquXXX.dat.

Symbols:

Y: vertical distance in mm. The origin y=0 is on the separating plate.
Y* is a dimensioless ordinate defined in Barre et al. 1994.
DELTA is the layer thickness (Stanford Conference definition).
( )' denotes a rms value.

Tt : total temperature.
U: velocity.
Ro: density.
T: static temperature.
U'2:velocity variance in (m/s)**2
Du=U1-U2, velocity difference across the mixing layer.
Uc: isentropic convection velocity.
(UT)''=<U'T'> correlation function between velocity and temperature.
Rut : velocity temperature correlation coefficient.
SRA=((gamma-1)M2 (U'/U))/(T'/T), with gamma=Cp/Cv=1.4.

menaa:

menaa contains mean flow measurements in a mixing layer which is nominally the 
same as in Quine and Barre. In practice, different wind tunnel arrangements 
allowed to perform measurements  in a larger range, up to x=300 mm. There are 
however some differences in the external flows.

The files UeyeXXX.dat contain mean flow data. The meaning of XXX is the same 
as in the previous files. There are only few new symbols:

Tt: total temperature
M: Mach number
rho: density (kg/m3).

There are also two other files, Frottpri2.dat and Chaleury.dat.
Frottpri2.dat contains profiles of turbulent friction derived from mean flow data 
by mean momentum balance. 
tau= -<rho u'v'>, where < > denotes an average.

Similarly, Chaleury.dat contains the turbulent heat flux derived from mean 
measurements by integration of the mean total enthalpy equation. It is expressed in 
S.I. units.