THE INVESTIGATION OF OPTICAL PARAMETERS AND NANOSTRUCTURES OF DIESEL SOOT PARTICLES

Adaptation of zonal method of calculation radiation heat transfer with reference to marine diesels combustion chamber needs data about optical parameters of soot particles: their diameter, parameter of diffraction and attenuation coefficient. Experimental estimation of these parameters is a purpose of this investigation. Features of reciprocity of radiation heat fluxes in diesel engines combustion chamber are analyzed. Interconnection of optic-geometrical and energy parts of problem definition of radiation heat fluxes with help zonal method are showed. Data of electronic microscope investigations of optical parameters diesel soot particles and nanostructures are given. Method of soot particles sampling from combustion chamber is also given. It is stated that soot particles have the shape similar to sphere and range from 10 - 50 nm. This fact makes possible to classify the soot particles from optical point of view as small ones and justifies the application of zonal method to estimate the thermal condition of combustion chamber parts.