Further two-dimensional cod edevelopmetn for stirling space engine components

Cleveland State University, with support from NASA-Lewis Research Center, has been working on development of multidimensional models of Stirling engine components. In the work reported here, two-dimensional parallel plate models of an engine regenerator and a cooler were used to study heat transfer under conditions of laminar, incompressible oscillating flow. Substantial differences in the nature of the temperature variations in time over the cycle, were observed for the cooler as contrasted with the regenerator. Also, when the two-dimensional cooler model was used to calculate a heat transfer coefficient, it was found to be very different than that calculated using steady-flow correlations.