We consider an explosion at the center of a halo which forms at the intersection of filaments inside a cosmological pancake, a convenient test-bed model for galaxy formation. ASPH/PM simulations reveal that such explosions are anisotropic. The energy and metals are channeled into the low density regions, away from the pancake. The pancake remains essentially undisturbed, even if the explosion i...

Rockfall impact is one of the fatal hazards in pipeline transportation of oil and gas. The deformation of oil and gas pipeline caused by rockfall impact was investigated using the finite element method in this paper. Pipeline deformations under radial impact, longitudinal inclined impact, transverse inclined impact, and lateral eccentric impact of spherical and cube rockfalls were discussed, re...

To reveal the inner mechanism of gas explosion dynamic behavior affected by gas equivalent concentration, a high speed Schlieren image system and flow field measurement technology was applied to record the gas explosion flame propagation and flame structure transition. The results show that a flame front structure transition occurs, followed by a flame accelerating propagation process. The lami...

Consider a pipeline with time dependent delivery volumes at various load points. Such a system can be controlled by changing with time the pressure setpoints at stations to manipulate flow and linepack. We present an algorithm that computes an optimum set of time-varying setpoint values (out to a user-specified simulation horizon) simultaneously for all stations. These setpoint values are compu...

Sarah Hodge Bournemouth University Talbot Campus, Fern Barrow Poole, BH12 5BB shodge@ bournemouth.ac.uk Jacqui Taylor Bournemouth University Talbot Campus, Fern Barrow Poole, BH12 5BB jtaylor@ bournemouth.ac.uk John McAlaney Bournemouth University Talbot Campus, Fern Barrow Poole, BH12 5BB jmcalaney@ bournemouth.ac.uk Christos Gatzidis Bournemouth University Talbot Campus, Fern Barrow Poole, BH...