Abstract
Fluid topology optimization has higher design freedom than traditional shape and size optimization methods. Its design parameters are represented by a porosity parameter defined at each grid node in the design domain. Hence, the topology optimization has superiorities in creating novel and high-performance structures or flow ducts. Considering this, this method is adopted in this work to design gas-turbine-related flow passages, which mainly include an abrupt pipe, and U-bend channel and the contouring profile of a rotor blade tip. The objective for all cases is to improve the duct aerodynamic performance. To do this, both a quasi-sensitivity and an adjoint sensitivity approaches are utilized. In addition, flow fields in all optimized flow ducts are predicted using CFD simulations. Results clarifies the mechanism in improving the aerodynamic performance of the designed structures.
Published Version
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