Abstract

The study on bio fuels is on an increase so as to reduce the dependency on the petroleum based fuels. Bio fuels were earlier studied in the engines and their characteristics were noted. But the diesel engine testing includes complex non-linear interaction between the intensive and the extensive properties. The complex interaction of fluid mechanics and the chemistry involved in the engines makes it difficult to understand the trends of the fuels and makes it difficult for comparison. As the pollutant and particulate matter formation is a function of physical and chemical properties, it is utmost required that the study should be done under controlled and calibrated environment.
This study particularly involves the behavior of bio diesel flames in a turbulent environment. Different bio diesels like Canola Methyl Ester (CME), Soy Methyl Ester (SME) and No.2 Diesel flames are presently studied for different Reynolds number and their emission properties are studies. The previous study includes global emission measurement, temperature measurement, radiation measurement and inflame concentration measurement. The further study will include the measurement of soot volume fraction with the help of laser beam attenuation due to the presence of soot and by measuring the intensity of light with the flame field, without the flame field and by measuring the intensity of the flame itself. The soot concentration along the length of the flame and the maximum soot concentration in the flames of different fuels are compared. In the next study the Phase Doppler Particle Analyzer (PDPA) will be used to measure the velocity profiles at various axial locations of the flame.
By studying all these characteristics the comparison can very well be made between the conventional diesel fuel and the biodiesel fuels, operating under different conditions.

CME flame with Reynolds number of 4500, 3600 and 2700

SME flame with Reynolds number of 4500, 3600 and 2700

Diesel flame with Reynolds number of 4500, 3600 and 2700