DSM 2 - Applications of DSMC simulations (II) Fast,...

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6 Applications of DSMC simulations (II) Fast, non-equilibrium gas flows (laser ablation, evaporation, deposition) Flows on microscale, microfluidics Flows in microchannes Flows in electronic devices and MEMS Flow over microparticles and clusters Soot clusters Si wafer HD
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7 Basic approach of the DSMC method Gas is represented by a set of N simulated molecules ( similar to MD ) X ( t )=( r 1 ( t ), V 1 ( t ),…, r N ( t ), V N ( t )) Velocities V i (and coordinates r i ) of gas molecules are random variables. Thus, DSMC is a probabilistic approach in contrast to MD which is a deterministic one. Gas flow is simulated as a change of X ( t ) in time due to – Free motion of molecules or motion under the effect of external (e.g. gravity) forces – Pair interactions (collisions) between gas molecules – Interaction of molecules with surfaces of streamlined bodies, obstacles, channel walls, etc. Computational domain
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DSM 2 - Applications of DSMC simulations (II) Fast,...

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