A Numerical Study on the Effect of Pressure on Propulsive Droplets sizing in a Ramjet

The effects of Pressure on the average diameter of fuel propulsive droplets sizing and efficient mass fraction in combustion chamber of a ramjet are numerically investigated in the present paper. We named the mass of fuel vapor inside the flammability limit as the efficient mass fraction. The inlet pressure of entrance airflow is varied as 1, 2, 3, 4 and 5(atm) to examine its effects on the fuel droplets and fuel/air mixing phenomena. As well, by growing the entrance air flow velocity from 36 to 50 (m/s) we have repeated this test again, which provides worthwhile information for the combustor design work. To fulfill the calculation we used a modified version of KIVA-3V

کلیدواژه ها:

Ramjet ، Efficient mass fraction ، Droplets sizing ، Spray cone ، pressure