Validation of a two-layer depth-averaged model by comparison with an experimental dilute stratified pyroclastic density current

Experimental study of turbulence, sedimentation, and coignimbrite mass partitioning in dilute pyroclastic density currents

Experimental Investigation of Porosity, Installation Angle, Thickness and Second Layer of Permeable Obstacles on Density Current

This study explored the effect of porosity and installation angle, thickness (dimension) and second layer of permeable obstacles on density current control and trapping in the laboratory. For this purpose, an insoluble suspended polymer and two types of groove and cavity obstacles made from plexiglass sheets were selected. The experiments were conducted with two different concentrations, five d...

Simulation of entrainment near a density stratified layer: Laboratory experiment and LIDAR observation

In this paper a simple qualitative model of the growth of a mixed layer adjacent to a uniform layer with a stably stratified layer is presented. The depth variations of mixed layer can be estimated from direct measurements. The Entrainment of a stably stratified layer into a turbulent mixed layer in a confined region was studied in laboratory for different Richardson numbers. The internal waves...

Resonant-wave signature of an oscillating and translating disturbance in a two-layer density stratified fluid

MOHAMMAD­REZA ALAM, YUMING LIU and DICK K. P. YUE Journal of Fluid Mechanics / Volume 675 / May 2011, pp 477 ­ 494 DOI: 10.1017/S0022112011000309, Published online: 06 April 2011 Link to this article: http://journals.cambridge.org/abstract_S0022112011000309 How to cite this article: MOHAMMAD­REZA ALAM, YUMING LIU and DICK K. P. YUE (2011). Resonant­wave signature of an oscillating and translati...

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...