sampling) used in 2D computations. Use of different strategies for adaptation enables
one to reduce computational cost, but still huge amount of computer memory is
required for modeling 3D flows.
Fast-speed Internet connection, modeling of chemically
reacting flows,
distributed machines
Research topic
The critical issue of modern numerical simulation of chemically
reacting flows
is the accurate prediction of all flow details in a multi-dimensional
statement,
which requires using both physically adequate models
for molecular collision
processes and efficient algorithms and approaches that
would allow one to
exploit all the capabilities of modern advanced computer
technologies.
The crucial part of improving computational performance
is to use
concurrent highly scalable numerical algorithms for flow
simulations.
Our activity is therefore aimed at an extensive use of
fast-speed internet
connections not only for data file transfer and flow
visualization, but also for
performing large-scale simulations on distributed remote
machines.
Results
The activity has been started toward
the numerical prediction of radiation in
plume flows. The first series of
computations has been performed by the DSMC
method for the plume exhausted
from the Progress engine and interacted
with the free stream at altitudes
of about 380 km. This series included
two-dimensional flow and showed
that even in this case considerable
comutational efforts are required.
For the three-dimensional case, use of parallel
machines is indispensible for obtaining
credible data, and Internet-2 fast
connection capabilities will be
utilized not only for flow visualization and
restart data transfer, but also
for the main simulations.
The figures below show different
grids (collisional and macroparameter
sampling) used in 2D computations.
Use of different strategies for adaptation enables
one to reduce computational cost,
but still huge amount of computer memory is
required for modeling 3D flows.
The collaboration is established between our group and
SCP Laborotory of Prof. Stephen
Taylor from Syracuse University and Prof. Mikhail Ivanov
from the Institute of Theoretical
and Applied Mechanics. We cooperate closely with Mr.
Jason Mader from the Virginia
Campus of the George Washington University. Joint work
with Prof. Shreiber of Ben-Gurion
University (Israel) in the processing of special materials
in shock heated bubble environments
is being planned.