Abstract:An investigation is conducted on the unsteady flow characteristic of a variable turbine guide vane. Subsequently, an analysis is performed on the unsteady flow characteristic under three situations, namely, no gap, partial gap, and full gap at the endwall of a variable guide vane. Investigation result demonstrates that an obvious leakage flow will occur when a partial gap or a full gap is present at the endwall of a variable turbine guide vane. Such leakage flow will cause turbine grade loss to deteriorate. Th… Show more
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