Turbulence, Coherent Structures, Dynamical Systems and SymmetryP. Holmes, J. L. Lumley, G. Berkooz, and C. W. Rowley, 2nd ed., Cambridge University Press, Cambridge, England, U.K., 2012, 386 pp., $90

A comprehensive survey of the analytical, numerical and experimental methodologies for dynamics of multibody mechanical systems with clearance or imperfect joints

Flow-induced vibration of a circular cylinder with splitter plates placed upstream and downstream individually and simultaneously

Experimental study on the effect of Reynolds number on aerodynamic performance of high-speed train with and without yaw angle

Predicting wind pressures around circular cylinders using machine learning techniques

Effects of splitter plates and Reynolds number on the aerodynamic loads acting on a circular cylinder

Firefly Algorithm (FA, for short) is inspired by the social behavior of fireflies and their phenomenon of bioluminescent communication Based on the fundamentals of FA, two improved strategies are proposed to conduct size and topology optimization for trusses with discrete design variables Firstly, development of structural topology optimization method and the basic principle of standard FA are introduced in detail Then, in order to apply the algorithm to optimization problems with discrete variables, the initial positions of fireflies and the position updating formula are discretized By embedding the random-weight and enhancing the attractiveness, the performance of this algorithm is improved, and thus an Improved Firefly Algorithm (IFA, for short) is proposed Furthermore, using size variables which are capable of including topology variables and size and topology optimization for trusses with discrete variables is formulated based on the Ground Structure Approach The essential techniques of variable elastic modulus technology and geometric construction analysis are applied in the structural analysis process Subsequently, an optimization method for the size and topological design of trusses based on the IFA is introduced Finally, two numerical examples are shown to verify the feasibility and efficiency of the proposed method by comparing with different deterministic methods

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Size and Topology Optimization for Trusses with Discrete Design Variables by Improved Firefly Algorithm

Modeling the mean wind loads on cylindrical roofs with consideration of the Reynolds number effect in uniform flow with low turbulence

Characteristics of wind pressure spectra on spherical domes have been investigated based on a series of wind tunnel experiments and a synthetic spectral model is derived for load estimation of cladding. First, wind pressure fluctuations on twelve dome models with various geometric parameters (rise/span and height/span ratios) are measured in a turbulent boundary layer. A discussion is detailedly made regarding the spectral distributions and patterns under different conditions. It is found though the pressure spectra vary with different tap locations and geometric parameters, similar spectral shapes and amplitudes can be observed. Then the statistics of pressure fluctuations are carefully checked and three typical spectra have been derived to represent the evolution of spectral pattern transforming from the windward to leeward region. Finally, a model of pressure spectra is proposed and utilized for generating local pressure fluctuations on spherical domes, which can be applied for the extreme and fatigue ...

Yue Wu

Papers

Effects of splitter plates and Reynolds number on the aerodynamic loads acting on a circular cylinder

Size and Topology Optimization for Trusses with Discrete Design Variables by Improved Firefly Algorithm

Modeling the mean wind loads on cylindrical roofs with consideration of the Reynolds number effect in uniform flow with low turbulence

Modeling of Wind Pressure Spectra on Spherical Domes

The 2017–18 design and construction of ice composite structures in Harbin