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Gravity Currents Propagating on Sloping Boundaries
Publisher: American Society of Civil Engineers
Abstract: Three-dimensional direct numerical simulations of gravity currents on different bottom slopes are presented in this paper. After the buoyancy closed in a lock is instantaneously released, the produced gravity currents go ...
Modified Thermal Theory for Gravity Currents on Sloping Boundaries
Publisher: American Society of Civil Engineers
Abstract: In this study, we generalize the classic thermal theory to account for both entrainment and detrainment effects occurring in the acceleration and deceleration phases of gravity current motion. Although the original thermal ...
Thermal Theory for Non-Boussinesq Gravity Currents Propagating on Inclined Boundaries
Publisher: American Society of Civil Engineers
Abstract: In this study the author derived the thermal theory for non-Boussinesq gravity currents produced from an instantaneous buoyancy source propagating on an inclined boundary. For Boussinesq gravity currents on a slope, it is ...
Discussion of “Note on the Analysis of Plunging of Density Flows” by Gary Parker and Horacio Toniolo
Publisher: American Society of Civil Engineers
Energy Dissipative Plunging Flows
Publisher: American Society of Civil Engineers
Abstract: The analysis of plunging flows using energy dissipation hypothesis is presented in this paper. The classic two-control-volume theory has recently been found questionable and needs to be corrected. In this study, we avoid ...
Meandering Instability of a Vertical Plume
Publisher: American Society of Civil Engineers
Abstract: The meandering instability of a two-dimensional vertical plume is considered in this paper. The base flow profile is derived using boundary layer approximation and similarity hypothesis, in the spirit of Blasius boundary ...
Stability of a Pair of Counterrotating and Corotating Vortices of Different Strengths
Publisher: American Society of Civil Engineers
Abstract: The stability of a pair of line vortices is considered. The two line vortices are different in strength of circulation and can be counter- or corotating. This work is a generalization reported by Crow in 1970 and Jimenez ...
Buoyancy-Driven Flow in a Two-Story Compartment
Publisher: American Society of Civil Engineers
Abstract: In this study we develop a theoretical model for the buoyancy-driven flow in a two-story compartment. In particular, the influence of the vent area