Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session G08: Multiphase Flows: Particle-Laden Flows I
10:35 AM–12:45 PM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B213
Chair: Greg Voth, Wesleyan University
Abstract ID: BAPS.2018.DFD.G08.1
Abstract: G08.00001 : Theoretical and Experimental Investigation of Forward Spatter of Blood from a Gunshot*
10:35 AM–10:48 AM
Presenter:
Patrick Comiskey
(Univ of Illinois - Chicago)
Authors:
Patrick Comiskey
(Univ of Illinois - Chicago)
Alexander Yarin
(Univ of Illinois - Chicago)
Daniel Attinger
(Iowa State University)
A theoretical model predicting forward blood spatter patterns resulting from a 9 mm Luger copper full metal jacket bullet gunshot wound is proposed. The chaotic disintegration of a blood layer located in the vicinity of the bullet is considered in the framework of percolation theory. The size distribution of the resulting blood droplets is determined which allows for the prediction of a blood spatter cloud being ejected from the rear side of the target where the bullet exits. Then, droplet trajectories are numerically predicted accounting for gravity and air drag which is affected by the experimentally verified collective aerodynamic interaction of droplets. The proposed model predicts the number and area of individual stains, as well as their distribution as a function of distance from the region of origin. The theoretical predictions are compared with experimental data acquired in this work fired from a 9 mm Glock model 19 and the agreement between the predicted and experimentally measured parameters is found to be good. Implications and future applications are discussed.
*This work was financially supported by the United States National Institute of Justice (award NIJ 2014-DN-BX-K036).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.G08.1
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