For complicated aerodynamic design problems, the efficient global optimization method suffered from defect of incorrect portrayal space, resulting in bad convergence and efficiency performance. To this end, a Kriging-based method, named space exploration (KSE), was proposed paper. It selected multiple promising local minima classified them into partially fully explored terms fitting quality sur...

Aerodynamic Drum Magnetic Separator (ADMS) uses an adjustable air flow to enhance the separation of magnetic particles from gangue. In order explore matching relationship between field, and gravity as well capture behavior under action multi-physics, a related simulation model is established using finite element software COMSOL Multiphysics accuracy results verified by measurement, formula calc...

In this paper, we develop an online, data-based framework for the aircraft airfoil to be able optimally morph vertically. The proposed combines data-driven analysis, optimization, and control-theoretic tools airfoils while guaranteeing efficiency safety. It incorporates a surrogate model that is based on deep neural network used predict aerodynamic coefficients meta-heuristic optimization algor...

Aircraft wings are commonly designed with nonplanar geometry, such as winglets, in order to improve aerodynamic efficiency. This work presents a method for generating wing designs through gradient-based optimization, which is then used investigate the performance characteristics of wings. The parameterization defined give large design space that allows formation highly features and permits chan...

In this paper we present a nonlinear programming solution to one of the most challenging problems in trajectory optimization. Unlike most aerospace trajectory optimization problems the ascent phase of a hypersonic vehicle has to undergo large changes in altitude and associated aerodynamic conditions. As a result, its aerodynamic characteristics, as well as its propulsion parameters, undergo dra...

This paper applies an exergy-based method on the two-dimensional airfoil and various threedimensional wing planforms to investigate the impact of exergy on aerodynamic designs. Our intent here is to report our efforts to couple a numerical code with an exergy analysis, a shape shifting algorithm and an optimization code to achieve desired airfoil and wing shapes. Exergy-based optimization is pe...

A methodology for performing optimization on 3D unstructured grids based on the Euler equations is presented. The same, low-memory-cost explicit relaxation algorithm is used to resolve the discrete equations which govern the ow, linearized direct and adjoint problems. The analysis scheme is a high resolution Local-Extremum-Diminishing (LED) type scheme which uses Roe decomposition for the dissi...

Approximate models have to be used in evolutionary optimization when the original fitness function is computationally very expensive. Unfortunately, the convergence property of the evolutionary algorithm is unclear when an approximate model is used for fitness evaluation because approximation errors are involved in the model. What is worse, the approximate model may introduce false optima that ...

The objective of this study is to minimize the drag coefficient of aerodynamics bodies for a specified design Reynolds number regime. With the aerodynamics model the gradient of the objective function (drag coefficient) cannot be determined analytically. Furthermore, it is expected that the objective function is multi-modal, i.e. it shows more than one minimum. Therefore, the optimization algor...