Date: November, 1997.
Smooth is a program for performing smoothing on a curve, surface, or volume grid. It is based on an older program by Robert Meakin. Smoothing is performed in any combination of J, K, L directions on a subset of a single grid in PLOT3D format. The user has the option to control the size of the transition region where the grid disturbance smoothly changes from zero at the subset boundary to the maximum computed from the smoothing operation at the end of the transition region.
Note that if a surface is smoothed in both J and K for all J and K, the grid boundaries are also smoothed for IMETH=1. If the grid boundaries have to be fixed, IMETH=2 should be used.
JSMOO/KSMOO/LSMOO = 0 Do not smooth in J/K/L
= 1 Do smoothing in J/K/L
IMETH = 1 Second order smoothing
= 2 Laplacian smoothing
NSMOO = Number of smoothing steps
JS,JE,KS,KE,LS,LE = start/end indices of J,K,L subset to smooth
If JSMOO=1, then enter
JT0,JT1 = no. of points in transition region at JS, JE
endif
If KSMOO=1, then enter
KT0,KT1 = no. of points in transition region at KS, KE
endif
If LSMOO=1, then enter
LT0,LT1 = no. of points in transition region at LS, LE
endif
Note: IMETH=2 is not implemented yet.
Output PLOT3D command file - smooth.com
input_grid_filename output_grid_filename 0,1,0 JSMOO,KSMOO,LSMOO 1, 5 IMETH, NSMOO 1,-1,1,-1,1,1 JS,JE,KS,KE,LS,LE 4,4 KT0,KT1
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