Emulating Satellite Drag from Large Simulation Experiments

The Drag-Free Satellite

A scientific earth satellite that is guided in a drag-free orbit by a shielded, free-falling proof mass has been proposed by a number of investigators. This paper examines the feasibility and some of the applications of this scheme. The control and guidance system is analyzed with respect to system performance and gas usage requirements. The principal trajectory errors that are due to vehicle g...

Modeling Satellite Drag Coefficients With Response Surfaces

Blocking technique for emulating very large polyelectrolytes.

A new Monte Carlo method for computing thermodynamical properties of very large polyelectrolytes is presented. It is based on a renormalization group relating the original polymer to a smaller system, where, in addition to the naively rescaled forces, a corrective nearest-neighbor interaction originating from the short distance Coulomb cutoff is introduced. The method is derived for low T but i...

Drag-and-Pop: Accelerating Drag-and-Drop on Large Screens

Drag-and-pop is an interaction technique designed to accelerate drag-and-drop on large screens. By animating potential targets and bringing them to the dragged object, drag-and-pop reduces the user effort required for dragging an object across the screen to a desired target. To preserve users’ spatial memory, targets are not moved away from their original location, but are instead stretched usi...

On integrating large eddy simulation and laboratory turbulent flow experiments.

Critical issues involved in large eddy simulation (LES) experiments relate to the treatment of unresolved subgrid scale flow features and required initial and boundary condition supergrid scale modelling. The inherently intrusive nature of both LES and laboratory experiments is noted in this context. Flow characterization issues becomes very challenging ones in validation and computational labo...