The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 53-621
Full Name: Nickolay Smirnov
Position: Professor
Age: ON
Sex: Male
Address: Bol. Filiovskaya, 19/18-1-40, Moscow
Country: RUSSIA
Tel:
Tel prefix:
Fax:
E-mail address: mex.mat.msu@inbox.ru
Other E-mails:
Title of the Paper: Spray injection and ignition in a heated chamber modeling
Authors as they appear in the Paper: Betelin V.B., Kushnirenko A.G.1,2, Nerchenko V.A., Nikitin V.F., Smirnov N.N.
Email addresses of all the authors: mex.mat.msu@inbox.ru
Number of paper pages: 13
Abstract: Computer simulation of liquid fuel jet injection into heated atmosphere of combustion chamber, mixture formation, ignition and combustion need adequate modeling of evaporation, which is extremely important for the curved surfaces in the presence of strong heat and mass diffusion fluxes. Combustion of most widely spread hydrocarbon fuels takes place in a gas-phase regime. Thus, evaporation of fuel from the surface of droplets turns to be one of the limiting factors of the process as well. The problems of fuel droplets atomization, evaporation being the key factors for heterogeneous mixtures reacting mixtures, the non-equilibrium effects in droplets atomization and phase transitions will be taken into account in describing thermal and mechanical interaction of droplets with streaming flows. In the present lecture processes of non-equilibrium evaporation of small droplets will be discussed. It will be demonstrated, that accounting for non-equilibrium effects in evapor!
ation for many types of widely used liquids is crucial for droplets diameters less than 100 microns, while the surface tension effects essentially manifest only for droplets below 0.1 micron. Investigating the behavior of individual droplets in a heated air flow allowed to distinguish two scenarios for droplet heating and evaporation. Small droplets undergo successively heating, then cooling due to heat losses for evaporation, and then rapid heating till the end of their life time. Larger droplets could directly be heated up to a critical temperature and then evaporate rapidly. Atomization of droplets interferes the heating and evaporation scenario.
Keywords: Combustion, Ignition, Phase Transition, Heat Flux, Evaporation, Non-equilibrium, Diffusion, Mathematical Simulation
EXTENSION of the file: .doc
Special (Invited) Session: Mathematical Fluid Dynamics
Organizer of the Session: Professor F.-K. Benra
How Did you learn about congress: Fluid Dynamics, Multiphase Flow, Spray Combustion
IP ADDRESS: 92.36.33.173
