Bloodstain Pattern Analysis: implementation of a fluid dynamic model for position determination of victims

摘要: Bloodstain Pattern Analysis is a forensic discipline in which, among others, the position of victims can be determined at crime scenes on which blood has been shed. To determine where source was investigators use straight-line approximation for trajectory, ignoring effects gravity and drag thus overestimating height source. We how accurately location origin estimated when including into trajectory reconstruction. created eight bloodstain patterns one meter distance from wall. The origin's each pattern with: approximation, our method gravity, both drag. latter two methods require volume impact velocity bloodstain, we are able to with 3D scanner advanced fluid dynamics, respectively. conclude that by calculation, roughly four times more than approximation. Our study enables if victim sitting or standing, it might possible connect wounds body specific patterns, important scene