Download (DPLR) Code Version 4.01.0 User Manual

Using DPLR
5
Perform basic grid alignment, but hold first 40% of grid
points in the body-normal direction fixed (should only be
used with a restart file; permits rapid alignment of grid to
shock wave and more aggressive CFL ramp between
alignments, but should only be used after coarse alignment
has been achieved; still experimental) (Not Tested in DPLR
4.01.0)
11 Automatic grid alignment (basic) (Allows DPLR to
determine when to perform grid adaptions; not extensively
tested, so use with caution)
20 Surface morphing (constant amount) (Allows you to
morph the surface of the body by an amount specified in the
ds1 flag; used primarily for surface recession calculations;
not extensively tested at this time, so use with caution)
21 Surface morphing (variable delta specified in a
pointwise boundary condition file ) (Not Working in
DPLR 4.01.0)
Tech Tips:
1). If you set igalign=1 before a restart file from an existing
solution exists, a runtime error will occur.
2). When igalign=5, ngeom and imradial are ignored.
3) When igalign=20, the remainder of the flags in this block
are ignored and the body-normal distribution is taken as a
scaled version of the previous distribution at every body
location.
4). Two options that were allowed in v3.05, igalign=4 and
igalign=14, are deprecated in this release. As of v4.01.0, the
input flag ismooth is provided in order to give the user more
flexibility in controlling the type of smoothing that occurs. The
functionality of igalign=4 and igalign=14 can be
replicated in the current release by setting igalign=1 and
igalign=11 respectively, along with ismooth=3.
ngiter
-
Sets the frequency at which a grid alignment is
performed. Recommended values:
500 – 1500
DPLR Code Version 4.01.0 User Manual
4-31
2/6/09