Indian Journal of Science and Technology

Abstract

Engineers and researchers are struggling to reduce the emissions and improve the performance of the automobile engines. Many new techniques and alternative fuels have been introduced to overcome such obstacles. In alternative fuels, hydrogen as a fuel achieved prime importance on account of many better characteristics: broader flammability limit range and improved flame stability, the higher laminar and turbulent burning velocities as compared with conventional hydrocarbon fuels. Also since the hydrogen has very low ignition energy and such benefits to achieve ultra-lean-burn mixture. In this research work, the hydrogen was added from 10% to 90% with each interval of 10 % in the primary diesel fuel and varied equivalence ratio from 0.6 to 1.4 to examine the effect on tumble motion. ANSYS Fluent 17 for Internal Combustion (IC) Engines was employed to accomplish all the results. In results, the addition of hydrogen and increasing the equivalence ratio cause the tumble motion increased and boosts the flame propagation. 

Keywords: Computational Fluid Dynamics, Diesel Fuel, Equivalence Ratio, Hydrogen, Tumble Motion