Fundamental flame studies of soot formation and morphology at elevated pressures

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To achieve higher thermal efficiencies and smaller engine volumes, combustion engines are designed to operate at pressures much higher than the atmospheric. One of the major pollutants emitted from the gas turbines and diesel engines is soot, also known as particulate matter or black carbon, which forms during the combustion process when the mode of operation is non-premixed or partially-premixed, and its formation rate is significantly increased by increasing the combustion pressure. Soot aerosols affect the Earth's temperature and climate, both regionally and globally by altering the radiative properties of the atmosphere. The contribution to global warming may be substantial, perhaps second only to that of CO