The main motivation of the current study is to propose a high-pressure hydrogen injection as an hybrid active flow control technique in order manipulate flow-field front blunt nose during hypersonic flight. Hydrogen can lead self-igition under right environment conditions stagnation zone, and may cause thermal heat addition through combustion provide counterjet effect together by pushing bow sh...

Expanding traditional time geography, this study examines personal exposure to air pollution and personal pollutant intake, and defines personal health danger zones by accounting for individual level space-time behavior. A 3D personal air pollution and health risk map is constructed to visualize individual space-time path, personal Air Quality Indexes (AQIs), and personal health danger zones. P...