A new optimization algorithm is proposed and tested for four different test cases: benchmark test functions, multi-element airfoil optimization in subsonic flow, active flow control parameter optimization in transonic flow, and a direct shape optimization of an airfoil in transonic flow.
The new approach significantly decreases the required CFD calls by approximately 50% in multi-element airfoil optimization; more than 70% in active flow control parameter optimization; and approximately 50% in direct shape optimization problem.
The application of flow control, shape optimization and endwall contouring are promising actions to shorten the diffuser length and, furthermore, to gain an engine weight reduction.
The direct and adjoint operators play an undeniably important role in a vast number of theoretical and practical studies that range from linear stability to flow control and nonlinear optimization.
Results obtained present details of high-speed compressor cascade flow, which is rare in the relating research fields and is beneficial to mechanism analysis, aerodynamic optimization and flow control design.
To validate the numerical study, a natural laminar flow airfoil, Rae5243, is chosen and then comparisons with experimental data have been made before the optimization of flow control parameters.
Potential applications include problems on distributed dynamic resource allocation, congestion and flow control in networked systems, as well as portfolio optimization in financial markets.
The work focuses on the development of an electrolysis optimization approach using the water flow control in its alliance with the PV power excess which is also maximized.
The optimization process and the analysis of optimum state provide guidance to the design of active flow control devices.
Fahl, Trust-region methods for flow control based on reduced order modeling, Ph.D. Thesis, Trier University, 2000], to update the reduced-order models during the optimization process.
