INFLUENCE OF THE PHYSICAL PROPERTIES OF MIXED BIOFUELS ON THE SPRAY CHARACTERISTICS

An analysis has been made of the infl uence of the physical properties of mixed biofuels on the characteristics of spraying by centrifugal atomizers. It has been shown that the characteristics of the jet downstream of devices effectively atomizing oil fuels can signifi cantly degrade in using biofuels. To avoid collapse of the fuel bubble, it is necessary to calculate the form of the fuel sheet. We have constructed the boundary curves in coordinates fuel Reynolds number–Laplace number characterizing the transition from the ″tulip″ form of disintegration of the sheet to its atomization and enabling one to determine the boundaries of the spraying region for any atomizer. The swirl of the air surrounding the atomizer in the same direction as the twist of the fuel sheet markedly upgrades the spraying characteristics of strongly bound fuels. The determining infl uence on the form of the sheet is exerted thereby by the value of the tangential air fl ow velocity, and the value of the axial velocity is immaterial
   
Author:  A. Yu. Vasil′ev, A. I. Maiorova, A. A. Sviridenko, and O. G. Chelebyan
Keywords:  atomization, biofuel, centrifugal atomizer, combustion chamber
Page:  1475