Affect of the Scattering Asymmetry by Structural Element of Thermal- or Environmental-Barrier Ceramics on Subsurface Radiant Overheating

The problem of the formation and estimation a thermoradiant temperature field in ceramics Thermal- Environmental-Barrier Coatings (TBC/EBC) has been considered with complex heat transfer but under influence penetrating intense radiant component. authors proposed to analyze not only TBC also EBC from point view optics semitransparent scattering absorbing media range ~0.4–4 μm external action. This paradigm allows us continue study ceramic fibers embedded matrix CMCs (C/C, C/SiC, SiC/SiC) as traditional class opaque materials. However, at same time, mullites, Al2O3/Al2O3 have reviewed elements for designing CMCs. relevance studying effect oriented on thermoradiation fields material was noted. Modeling asymmetry coefficient (scattering phase function) generation subsurface thermal radiation source carried out. methodology calculating thermoradiative medium (with relative absorption, indexes, coefficient) used one-dimensional two-flux model first approximation solving radiative equation. Calculations profiles were presented load typical combustion chambers operating regime diesel gas turbine engines.