PROBLEM DEFINITION
This problem examines the flow of a silicon nanoparticle carrier gas within a chamber that contains a silicon wafer. The top walls are heated, and the wafer is kept at a cold temperature. As the particles flow over the wafer, they are deposited on it because of thermophoresis. The geometry is shown below:
EXECUTABLE AND INPUT FILE
Input file (PROB.INP)
Windows 3.x/9x/ME/2000/NT Executable (PCSNDC.EXE)
Obtain both files in a compressed package (PCSNDC.ZIP)
SAMPLE RESULTS
Simulations
(Note: results
are rotated -90 degrees with respect to above figure)
Computational Grid (generated using CONTOUR):
Velocity vector field – vectors < 0.025 m s-1 are shown only (generated using ARROW):
Streamlines (generated using ARROW):
V-Velocity field contours (generated using CONTOUR):
Temperature field contours (generated using CONTOUR):
Sample results input file
(PROB.INP)
*
*
===[ PARAMETER FILE FOR SILICON NANOPARTICLE
CHAMBER UNITS IN SI ]======
*
===[
PROBLEM PARAMETRES
]===============================================
Length
of inlet, chamb1, chamb2, chamb3, plate [AL1-AL4,ALG]
1e-2,
2.8448e-2, 2.8448e-2, 2.8448e-2, 1e-2
Radius
of inlet, chamb1, chamb2, chamb3, outlet, plate [RL1-RL4,RLO,RLP]
1.0e-2, 5.08e-2, 12.7e-2,
5.08e-2, 2.032e-2, 10.16e-2
Temperature of inlet, chamb1,
chamb2 wall and plate [TIN,TCH1,TCH2,TPLATE]
273,
373, 373, 273
Inlet
Velocity [UIN]
0.05
Parabolic inlet velocity profile
(.TRUE.=yes, .FALSE.=no)
[UPARAB]
.TRUE.
===[
GRID AND GEOMETRY VARIABLES
]=======================================
Number
of cells in X, Y direction [NI, NJ]
40,
40
===[
DEPENDENT VARIABLES
]==============================================
Solve
for U, PP, T equations ? [INCALU, INCALP,
INCALT]
.T., .T., .T.
===[
THERMO-PHYSICAL PROPERTIES
]=======================================
Material Density, Laminar fluid
viscosity
[DENSIT, VISCOS]
1.0,
1e-5
Laminar
Prandtl number
[PRANDT]
0.7
===[
ITERATION PARAMETERS
]=============================================
Maximum number of iterations per
time step
[MAXIT]
500
Maximum acceptable value of residuals
[SORMAX]
0.005
Under-relaxation factors for
U,P,T equations [URFU,URFP,URFT]
0.4,
0.1, 1.0
===[
EQUATION SOLVER PARAMETERS
]======================================
Solver
selection for U, PP, T equations [ISLVU, ISLVP,
ISLVT]
1, 1,
1
Number
of iterations for PP-equation per cycle [LITERP]
7
===[
INPUT-OUTPUT PARAMETERS
]==========================================
I,J index of monitoring location [IMON, JMON]
25,
25
Iteration Index for field printout
[NITPRI]
1000
Read
IN initial field
[INREAD]
.F.
Name
of restart file
[RSTFIL]
RESTAR2.BIN
Copy
OUT FINAL field
[INWRIT]
.TRUE.
Name
of SAVE file
[SAVFIL]
RESTAR2.BIN
Name
of RESULTS file
[OUTFIL]
CHAMBER.OUT