Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Graeme A. Bird"'
Autor:
Graeme A. Bird
Publikováno v:
Nano Energy. 11:463-470
Physical simulation methods are used to determine the average time that is required for the molecules in standard air to transfer sufficient energy to an initially stationary particle to bring it to equilibrium with the gas as a Brownian particle. In
Autor:
Graeme A. Bird
Publikováno v:
NanoWorld Journal.
Publikováno v:
Journal of Computational Physics. 228:4532-4548
The convergence rate of a new direct simulation Monte Carlo (DSMC) method, termed ''sophisticated DSMC'', is investigated for one-dimensional Fourier flow. An argon-like hard-sphere gas at 273.15K and 266.644Pa is confined between two parallel, fully
Autor:
Graeme A. Bird, James N. Moss
Publikováno v:
AIAA Journal. 43:2565-2573
The capabilities of a relatively new direct simulation Monte Carlo (DSMC) code are examined for the problem of hypersonic laminar shock/shock and shock/boundary-layer interactions, where boundary-layer separation is an important feature of the flow.
Autor:
Graeme A. Bird, James N. Moss
Publikováno v:
Journal of Spacecraft and Rockets. 40:830-843
This paper presents results of flowfield calculations for typical hypersonic reentry conditions encountered by the nose region of the Space Shuttle Orbiter. Most of the transitional flow regime is covered by the altitude range of 150 to 92 km. Calcul
Autor:
Graeme A. Bird
Publikováno v:
Physics of Fluids. 14:1732-1735
The ratio of the mean time between collisions of a typical molecule to the scale time of the density change of an element moving with the flow has long been used as a criterion for the breakdown of translational equilibrium in gaseous expansions. The
Autor:
Graeme A. Bird
Publikováno v:
Computers & Mathematics with Applications. 35:1-14
The current status of the direct simulation Monte Carlo (or DSMC) method is reviewed with particular emphasis on its range of validity, the extent of its validation against experiment, and the new molecular models that have been developed in the cont
Autor:
Graeme A. Bird
Publikováno v:
Physics of Fluids. 28:062005
The procedures that are used to calculate the forces and moments on an aerodynamic body in the rarefied gas of the upper atmosphere are applied to a small sphere of the size of an aerosol particle at sea level. While the gas-surface interaction model
Autor:
Graeme A. Bird
Publikováno v:
AIP Conference Proceedings.
The DSMC method has been used to simulate the flow associated with several experiments that led to predictions of the dissociation rate in nitrogen. One involved optical interferometry to determine the density behind strong shock wave and the other i
Publikováno v:
Physics of Fluids. 6:2191-2201
For internal energy relaxation in rarefied gas mixtures, exact relationships are derived between the selection probability P employed in direct simulation Monte Carlo (DSMC) methods and the macroscopic relaxation rates dictated by collision number Z