Range Of Parameters Used In This Study

Setting up the parameter range of this study proved to be a. difficult task. It was found that there are very few data sources of such information, and less yet of those which are in a form suitable for extraction of information needed for the present study. Nevertheless, using the literature as a guide, ranges of possible values were established for all

The heat transfer coefficient, radiation/convection temperatures and the product of volumetric fraction of soot times radiation path length (fyL) are shown in Figures 16-a, 16-b and 16-c respectively. It should be noted that the radiation quantities T . and fyL are non-zero only during combustion. The time averaged heat transfer coefficient had a value of 935 W/m^K, and the effective gas temperature (Teff = JhgTg/Jhg) for the convective temperature profile shown in Figure 16-b was 1046K.

The cooling-side boundary conditions were adjusted so that the metal substrate below the ceramic layer would be maintained at 650K for all cases considered in this study. This reflects a situation where the engine component

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