In this paper, analytical procedure is applied to a typical radial microcombustor to obtain a relation between wall and flame temperature. In order to establish a correlation, heat transfer within the reaction zone and through the walls is investigated. Assuming a linear flame temperature profile along the flame zone, a relation between flame and inner wall temperature at the end of combustion is derived. Then by considering wall thermal resistance, the flame temperature is related to the outer wall temperature. In this study, the flame flow is assumed to be laminar and Nu number along the radius is determined by a polynomial function. An available experimental investigation is used to validate the proposed relation through comparing measured flame radius by the flame radius which is calculated by predicted flame temperature and a good agreement was achieved.

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