Below are items from the 47th DCASS, held 8 March 2022.
Mie Scattering of Alumina Dust while Aligning a Laser
Gabriella Marie, Michael McKinney, and Michael W. Renfro
University of Kentucky
While optimizing a YAG:ND to perform a PLIF experiment this image of alumina dust was captured. Showing the flow of air in the laboratory while performing the setup of an experiment.
Vortex Blooming
Jielong "Jacky" Cai and Sidaard Gunasekaran
University of Dayton
The surface oil flow visualization shows the propeller flow pattern on a ground plane in the ground effect. The image shows two types of flow region, the center tangential and swirling flow and the outer radial flow, dividing by a stagnation streamline. The special pattern of a vortex blooming looks like a blooming flower.
Shock Droplet Interaction
Mitansh Tripathi, Himakar Ganti, and Prashant Khare
University of Cincinnati
This study quantitatively investigates the behavior of multiple liquid cylinders placed in the path of a traveling normal shock wave using high-fidelity numerical simulations. The focus of the current study is on the deformation and interfacial physics. Two identical cylinders of water in quiescent air have diameters of 4.8 mm and are placed 30 mm apart, are exposed to a shock wave moving a Mach number of 1.47. It is found that the shock and the flow field in its wake leads to the flattening of the cylinder eventually leading to ligament stripping.