Investigation of Atmospheric Boundary-Layer Effects on Launch-Vehicle Ground Wind Loads

Ivanco, Thomas G.; Keller, Donald F.; Pinkerton, Jennifer L.

doi:10.1109/aero47225.2020.9172608

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Existing studies on FSI largely rely on simplified physical models or numerical simulations under specific boundary conditions. These methods struggle to address complex geological conditions and real-world engineering challenges [13,14]. Particularly for sharp-curve tunnels, the transient effects of fluid, the nonlinear response of structures, and their interactions pose substantial challenges to accurate simulation [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Tunnel Design in Sharp Curves: A Numerical Simulation of Fluid-Structure Interaction

Cheng,

Zhang,

2024

IJHT

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With the rapid development of transportation infrastructure construction, tunnels, serving as key channels through complex terrains such as mountainous regions and rivers, are confronted with numerous challenges during design and construction phases. Particularly, in tunnel projects with sharp curves, traditional design methods, lacking in-depth analysis of fluid-structure interaction (FSI) effects under navigation conditions, struggle to ensure the long-term safety and stability of tunnels. This study systematically investigates the FSI issues in sharp-curve tunnel sections under navigation conditions through numerical simulation and optimization, aiming to enhance the scientific and practical aspects of tunnel design. Initially, a numerical model suitable for the FSI analysis of sharp-curve tunnel sections was established, capable of simulating the complex interplay between fluid dynamics and tunnel structures. The forces exerted by the fluid on the tunnel structure and its dynamic response characteristics were analyzed in detail through the calculation of coupled fields of fluid dynamics and structural mechanics. Subsequently, the impact of dynamic response parameters of tunnel structures on overall performance was explored using global sensitivity analysis methods. Finally, based on multi-objective optimization theory, the design parameters of tunnel structures were optimized to achieve higher safety and economic efficiency. The methodologies and findings of this article hold significant theoretical value for the design of sharp-curve tunnel sections and provide a reliable analysis and optimization tool for similar complex engineering problems. Practical outcomes indicate that this research significantly enhances the performance of tunnel design, playing a substantial role in ensuring the safe operation of tunnel projects.

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Section: Introductionmentioning

confidence: 99%

Optimizing Tunnel Design in Sharp Curves: A Numerical Simulation of Fluid-Structure Interaction

Cheng,

Zhang,

2024

IJHT

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“…For decades, numerous field studies observed the aerodynamic responses of vehicles and buildings that were fully immersed in the Atmospheric Boundary Layer (ABL) by submerging the small-scaled model into the ABL [1][2][3]. However, it is difficult to observe these responses in the real ABL due to non-control conditions where all properties need to be considered, including temperature.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the boundary layer development behind a single quarter elliptic-wedge spire

Fitriady

Rahmat

Mohammad

et al. 2023

JMES

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For decades wind tunnel has been utilized to generate a quasi-atmospheric boundary layer to observe the wake flow around objects submerged within the Atmospheric Boundary Layer. The quarter elliptic-wedge spire is the most commonly used as a vortex generator among other passive devices. However, despite numerous past studies that utilize rows of spires to generate deep quasi-ABL, only a few researchers targeted spires as the main subject of their investigation. Hence, the present work originally aims to investigate the wake flow structure behind a single quarter elliptic-wedge spire and its aerodynamic interaction with a smooth wall boundary layer. A computational fluid dynamics simulation predicting the wake flow structure behind a single quarter elliptic-wedge spire was conducted using the OpenFOAM® software. The computational domain consists a smooth flat plate, and a single quarter elliptic-wedge spire. A comparison of two Reynolds-Averaged Navier–Stokes turbulence models, namely the k-ɛ model and the SST k-ω model, was conducted. A SIMPLE algorithm was used as the solver in the simulation iteration and ParaFOAM® was used as the post-processing software. The development of the boundary layer height from streamwise x0=0.5S to downwind x0=20S was observed. The mean vertical velocity profiles predicted by both turbulence models are in good agreement with the previous wind tunnel experimental results. However, the results obtained with the k-ɛ model were overpredicted compared to the results of the SST k-ω model causing deviation of the boundary layer height from the wind tunnel experimental data. This anomaly might be caused by the velocity deficit recovery above the boundary layer height region where the turbulence is low.

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Wind Tunnel to Full Scale Mapping of Winds and Loads for Launch-Vehicle Ground Wind Loads

Ivanco

Keller

Pinkerton

2021

AIAA Scitech 2021 Forum

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Investigation of Atmospheric Boundary-Layer Effects on Launch-Vehicle Ground Wind Loads

Cited by 3 publications

References 9 publications

Optimizing Tunnel Design in Sharp Curves: A Numerical Simulation of Fluid-Structure Interaction

Optimizing Tunnel Design in Sharp Curves: A Numerical Simulation of Fluid-Structure Interaction

Numerical simulation of the boundary layer development behind a single quarter elliptic-wedge spire

Wind Tunnel to Full Scale Mapping of Winds and Loads for Launch-Vehicle Ground Wind Loads

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