- Prof. Hertzberg's research interests center around pulsatile, vortex dominated flows with applications ranging from combustion to cardiac and pulmonary fluid dynamics. Three dimensional flows and vortex rings of varied shapes are longtime favorites. Prof. Hertzberg pioneered a unique course on flow visualization and uses flow vis in research whenever possible. .Her disciplinary research centers around pulsatile, vortex dominated flows with applications in both combustion and bio-fluid dynamics. She is also interested in a variety of flow field measurement techniques. Current projects include velocity and vorticity measurements in human cardiac ventricles and large vessels.