Experimental and Numerical Modeling of Fluid Flow

Schwarze, Rüdiger

doi:10.3390/app12189042

Cited by 1 publication

(1 citation statement)

References 10 publications

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“…The MIV and EIV problems have been studied extensively and addressed by means of experiments and finite element model (FEM) simulations. Schwarze [10] overviewed the new applications of experimental and numerical flow models in different cases, such as railway tunnels after a train fire accident [11], isolated cubical buildings in a warm Mediterranean climate [12], parabolic trough solar collectors [13], flexible flaps in a laminar glycerin flow [14], and boiling model for rod bundle flows [15]. Ciappi et al [16] proposed the reliable analytical computational fluid dynamics models of wells turbines for oscillating water column systems, exploring the most straightforward and reliable solution for utilizing sea wave energy.…”

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confidence: 99%

Aeroelastic Experimental Investigation of Hyperbolic Paraboloid Membrane Structures in Normal and Typhoon Winds

Liu

Zhang

et al. 2022

Sustainability

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The lightweight and flexible membrane structure of roofs are susceptible to wind loads with the risk of damage and failure. Compared with uniform and low-level turbulence flow cases (i.e., normal winds) that have been well investigated, the wind-induced vibration problem of membrane structures in high-level turbulence flows such as typhoons has been paid little attention. To address the gap, this paper aimed at investigating the aerodynamic behavior of hyperbolic paraboloid membrane structures in normal and typhoon winds by a series of wind tunnel tests. Some distinct wind characteristics of upcoming normal and typhoon flows in terms of vertical profiles of wind velocity, turbulence intensity, and power spectrum density of fluctuating winds were well simulated in an automatically controlled wind tunnel. The aeroelastic behavior of a scaled model was analyzed and discussed in terms of displacement time-history responses, probability distribution characteristics, and dynamic characteristics including the natural frequency, mode shape, and damping ratio. Results show that the increasing suction in a typhoon leads to significant growth in maximum deformations and more risks to suffer from aeroelastic instability. Non-Gaussian characteristics appear more remarkable with skewness and kurtosis increasing almost two-fold in typhoons. Structural modal parameters are influenced by both turbulence intensity and wind velocity. This study provides basic insights into the deficiency of dynamic response of membrane structures in typhoons, and promotes the applications of membrane structures in green buildings.

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