Numerical analysis of spray characteristics with methane and nanoparticles under various injection velocities

Abstract

Utilization of the numerical simulations has been increased rapidly to test many innovative concepts in the field of advanced fuel technologies. Implementation of many chemical compound's interaction is viable option by the numerical tools. Hence in this current study, the numerical simulation has been performed to evaluate the effect of spray velocities on the mass fraction of various compounds. The conceptual numerical domain has been constructed with mixture of two inlets such as Air and CH4using ANSYS-CFD. In addition to the CH4, the nanoparticles were injected in the same inlet using volume of fluid method. The fuel was injected at different velocities of 100 m/s, 125 m/s, 150 m/s and 175 m/s. Here two sections of the domains are created, one of the oxidizers and another for the CH4 with nanoparticles. Throughout the entire trails run the nanoparticle concentration has been maintained constant. A series of the pictorial contours has been captured to understand the influence of the fuel impinging characteristics and the rate of the chemical reactions in the combustion chamber. Form the findings it is evident that, when the CH4 injection velocity is higher the formation of the vortices was high inside the combustion chamber. Further, the turbulence intensity inside the chamber is high which delays the reaction time and which leads to the higher combustion indeed.