samadii/sciv
generalized DSMC(Direct Simulation Monte Carlo) solver
(for
rarefied gas dynamics)
Based on GPU Computing, samadii/sciv (Statistical Contact in Vacuum) analyzes fluid behavior,
deposition, and chemical reactions on rarefied gas flow
regime, by using DSMC(Direct Simulation Monte Carlo) methods. In general continuum regime, solving
Navier-Stokes equation is regarded as to analyze
fluid behavior; but this assumption cannot be applied in rarefied gas regime. Because continuum fluid
dynamics does not agree that liquid and gaseous
substances are composed of molecules, but it regards its motion as a continuous fluid.
Under continuum condition, viscosity coefficient represents momentum exchange with collision in a flow,
because mean free path of the gas molecules is very short.
On the other hand, in rarefied gas, the mean free path of the gas molecules is getting longer relatively.
Thus, Navier-Stokes equations are meaningless without the characteristic of continuum.
By replacing a large number of real molecules with representative particles (FN,
1011~1015), the DSMC method models physical
phenomena that Boltzmann equation represents, with a probabilistic simulation. With these representative
particles, physical phenomena such as Evaporation, deposition, and
chemical reactions can be analyzed effectively with flow of the rarefied gas. samadii/sciv
can implement a variety of inlet and outlet conditions;
and also it can be applied to the collisions on the wall surface, the deposition, the temperature conditions
and various chemical reactions.
.png "samadii/ray
radiation-conduction heat transfer analysis")
