What does the code number of a DNS database mean ?

[Code Number] = [8 characters]+ "." + [3 characters]
= [ABijklXY] + "." + [CDn]

AB: classification code #2.
ij: primary strain rate component, e.g., (12) denotes dU_1/dx_2.
k: primary scalar gradient direction, e.g., (2) denotes dT/dx_2.
l: buoyancy force direction, e.g., (3) denotes rho*g_3. l = 9,if buoyancy
affects multiple directions.
XY: classification code #3.
CD: classification code #1.
n: entry number among same flow category.

Classification Code #1

1. HM: Homogenous flows
2. FR: Free flows
3. WL: Wall flows
4. CM: Complex flows

Classification Code #2

1. Homogeneous flows
1.1 Homogeneous isotropic turbulence IS
1.2 Homogeneous anisotropic turbulence
1.2.1 Return to isotropy RE
1.2.2 Pure strain ST
1.2.3 Simple shear SH
1.2.4 Rotation RT

2. Free flows
2.1 Mixing layer ML
2.2.1 2-D jet 2J
2.2.2 Axisymmetric jet RJ
2.3.1 2-D wake 2W
2.3.2 Axisymmetric wake RW

3. Wall flows
3.1 Boundary layer BL
3.2.1 2-D channel flow CH
3.2.2 Plane Couette flow PC
3.3 Pipe flow PI
3.4 Flow between annuli AN
3.5 Rectangular duct flow RC
3.6 Wall jet WJ

4. Complex flows
4.1 Backstep flow BS
4.2 Flow in enclosure CL

Classification Code #3 (Influential factors)

XX: Unable to specify
CO: Compressibility
VP: Variable physical properties
UT: Unsteadiness
AC: Acceleration
DC: Deceleration
PG: Pressure gradient
CU: Streamline curvature
RT: Rotation and/or swirl
BU: Buoyancy force
MH: Magnetic or electric forces
FT: Free stream turbulence
BL: Wall blowing
SU: Wall suction
BS: Blowing and suction
RS: Surface roughness
SE: Separation
AT: Reattachment or impingement
CH: Chemical reaction
TP: Two-phase
PL: Particle laden

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