Comparison of transient two-phase flow instabilities in a four parallel channel upflow system with and without cross-connections.

Özboya, Nail


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A thermochemical ablation modeling tool is developed for graphite material in air for reactive hypersonic flows. Multi-species and axisymmetric Navier-Stokes equations are solved for the flow field analysis. Arrhennius type of relations are utilized for finite rate reactions and chemical equilibrium is assumed on the eroding wall of graphite material. Total of thirteen species are included in the analysis in which eight of them are the products of the graphitic material ablation. Flow field, surface thermoc...
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In this paper, damage progression in curved CFRP composite laminates are experimentally investigated for static and fatigue loadings. Two different cross-ply laminate thicknesses are examined with grouped plies to elucidate the failure mechanisms. A test fixture is designed to apply moment/axial combined loading to curved specimens and DIC method is used to obtain the strain distribution in the curved region until failure. Our major finding is that under fatigue loading, the failure location and mechanism a...
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Multi-phase interleaved boost converters are widely used in high power applications thanks to their high efficiency, high power density, increased output power capability and low input current ripple features. However, increasing the phase number results in an increase in the overall volume of the converter. In order to reduce the volume of the converter, inductors in multi-phase interleaved boost converters can be coupled. For a two-phase interleaved boost converter, loosely-coupled inductor (LCI), close-c...
Citation Formats
N. Özboya, “Comparison of transient two-phase flow instabilities in a four parallel channel upflow system with and without cross-connections.,” Middle East Technical University, 1975.