An early example: a buoyant smoke plume in a tunnel
The turbulent Bunsen burner
The plane turbulent mixing layer, with a multi-fluid turbulence model
More recent compressible-flow developments are described below.
Because the flow is partly sonic and partly subsonic, the PIL variable IPARAB has to be set equal to 5 in the Q1 file; and STORE(MACZ) should appear, also, in order that the appropriate testing for Mach Number can be carried out.
The typical succession of higher- and lower-pressure regions is clearly
seen in the following pictures, in which the flow is from right to left.
* Mach number contours
* pressure contours
* axial-velocity contours
* velocity vectors
The flow is three-dimensional. The IPARAB and MACZ settings are as before.
The typical succession of higher- and lower-pressure regions is clearly
seen in the following pictures.
* Mach number contours
* pressure contours
* axial-velocity contours
* velocity vectors
When the flow is wholly supersonic, IPARAB may be set to 4 in
the Q1 file; and STORE(MACZ) is not needed.
The following pictures relate to such a flow. The gas enters
from the left, in a direction parallel to the lower wall.
A shock wave starts from the upper wall, in order to change the flow
direction to accord with the inclination of that wall. This wave
crosses the duct and is then reflected from the lower wall.
* Mach number contours
* pressure contours
* density contours
* velocity vectors
The axi-symmetrical sonic jet in near-stagnant surroundings
PHOENICS has been used for the simulation of the spread of a laminar
jet of compressible fluid emerging from a circular orifice into a large reservoir of the same fluid.
The flow is axi-symmetrical.
The three-dimensional sonic jet in near-stagnant surroundings
PHOENICS has also been used for the simulation of the spread of a laminar
jet of compressible fluid emerging from a square orifice into a large
reservoir of the same fluid.
Supersonic flow in a plane converging duct
