Inflammation Ahmed M. Gharib, Simon Lambert, Khaled Z. Abd-Elmoniem, Ahmed A. Harouni, Theo Heller, Caryn Morse, and Ralph Sinkus National Institutes of Health, Bethesda, MD, United States, Division of Imaging Sciences and Biomedical Engineering, King’s College, London, England, United Kingdom, Division of Imaging Sciences and Biomedical Engineering, King's College, London, England, United Kingdom

An analytical model for predicting the universal time scale for formation of vortex rings generated through impulsively started jets is considered. The model is based on two assumptions, namely the validity of the slug model in simulating the discharge process of the fluid out of the cylinder and the approximation of the vortex at the pinch off moment by a vortex in the Norbury family. The nond...

Mostafa Zare, A Zhiani Asgharzade, S Mostafavi, F Abbasi, M Karimi, M Sobhani Shahmirzadi, H Zarei, MH Gharib. Student research committee, Golestan University of Medical Sciences, Gorgan, Iran; Neonatal & Children’s Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran; Department of Gastroenterology and Hepatology Research Center of Golestan, Golestan university of Medi...

A criterion for identifying vortex ring pinch-off based on the Lagrangian coherent structures (LCSs) in the flow is proposed and demonstrated for a piston-cylinder arrangement with a piston stroke to diameter (L/D) ratio of approximately 12. It is found that the appearance of a new disconnected LCS and the termination of the original LCS are indicative of the initiation of vortex pinch-off. The...

Farhad Assarzadegan, Atoosa Gharib, Shirin Behbahani, Meysam Ebrahimi-Abyaneh 1 Department of Neurology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2 Department of Pathology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran 3 Department of Neurosurgery, Imam Hossein Hospital, Shahid Beheshti University of Medical Scienc...