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RISTransport of Entropy Waves Within a High Pressure Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of an experimental study on the transport of entropy waves within a research turbine stage, representative of the key aero-thermal phenomenon featuring the combustor-turbine interaction in ...
The Role of Endwall Shape Optimization in the Design of Supersonic Turbines for Rotating Detonation Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rotating detonation engines (RDEs) are characterized by a thermodynamic cycle with an efficiency gain up to 15% at medium pressure ratios with respect to systems based on the conventional Joule–Bryton cycle. Multiple turbine ...
A Computational Fluid Dynamics Study on the Performance of Modified H-Shaped VAWTs for Tilted Operation Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wind energy harvesting may see radical transformation with the introduction of new wind turbine concepts. The vertical axis configuration offers significant advantages that may promote the installation in deep waters, where ...
Optimization of Turbomachinery Flow Surfaces Applying a CFD Based Throughflow Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work proposes an automated strategy for the preliminary design of turbomachinery, based on the application of a throughflow code and of a highly flexible and efficient optimization strategy. The code solves for the ...
Assessment of Deterministic Shape Optimizations Within a Stochastic Framework for Supersonic Organic Rankine Cycle Nozzle Cascades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of converging–diverging blades for organic Rankine cycle (ORC) applications widely relies on automated shape-optimization processes. As a result, the optimization produces an adapted-nozzle cascade at the design ...
Assessment of Deterministic Shape Optimizations Within a Stochastic Framework for Supersonic Organic Rankine Cycle Nozzle Cascades
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The design of converging–diverging blades for organic Rankine cycle (ORC) applications widely relies on automated shape-optimization processes. As a result, the optimization produces an adapted-nozzle cascade at the design ...
High-Fidelity Shape Optimization of Non-Conventional Turbomachinery by Surrogate Evolutionary Strategies
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a novel tool for the shape optimization of turbomachinery blade profiles operating with fluids in non-ideal thermodynamic conditions and in complex flow configurations. In novel energy conversion systems, ...
Amplification of Operational Uncertainty Induced by Nonideal Flows in Supersonic Turbine Cascades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In high-temperature transcritical organic Rankine cycles (ORCs), the expansion process may take place in the neighborhood of the thermodynamic critical point. In this region, many organic fluids feature a value of the ...
Computational and Experimental Study of Hot Streak Transport Within the First Stage of a Gas Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper discusses the migration, the interaction with the blades, and the attenuation of hot streaks generated by combustor burners, during their propagation within the first turbine stage of aero-engines. Experiments ...
The Role of Turbomachinery Performance in the Optimization of Supercritical Carbon Dioxide Power Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The successful penetration of supercritical carbon dioxide (sCO2) power systems in the energy market largely depends on the achievable turbomachinery efficiencies. The present study illustrates a systematic framework where ...