Book ChapterDOI
Computational Simulation of Wind Flow Behavior Around a Building Structure
K. B. Rajasekarababu,G. Vinayagamurthy +1 more
- pp 325-331
TLDR
In this paper, the authors focused on building structures with an aspect ratio in the plan of 1:2:3 for the computational simulation, and the building was geometrically scaled down to 1:300 and simulated using the Improved Delayed Detached Eddy Simulation turbulence model (IDDES) along with the formulation of k-ω Shear Stress Transport (SST).Abstract:
The evaluations of wind forces on structures are highly complex due to overall building design and scale. The wind flow on and around buildings is receiving more importance among architects and urban planners to ensure the safety and economical design. Computational fluid dynamics (CFD) simulation is regularly employed for the evaluation of wind forces like accessing the wind flow pattern and aerodynamic coefficients. The present study focuses on building structures with an aspect ratio in the plan of 1:2:3 for the computational simulation. The building is geometrically scaled down to 1:300 and simulated using the Improved Delayed Detached Eddy Simulation turbulence model (IDDES) along with the formulation of k–ω Shear Stress Transport (SST). This simulation investigates and compares the aerodynamic parameters, wind flow patterns, the size of recirculation, and wake separation zones in a three-dimensional plane. The velocity profiles are quantified in terms of width of the building (D) and Cpmean (mean pressure coefficients) at 0° and 90° wind incidences. The Cpmean is validated against the results obtained from the Boundary Layer Wind Tunnel (BLWT) experimental results.read more
Citations
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Book ChapterDOI
Computational Modeling of Wind Flow in an Urban Environment: A Case Study Navi Mumbai
TL;DR: In this article , simulations of wind flow around the building and evaluating the wind conditions at pedestrian level using computational fluid dynamics (CFD) package available in ANSYS Fluent software were performed.
References
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Journal ArticleDOI
Two-equation eddy-viscosity turbulence models for engineering applications
TL;DR: In this paper, two new two-equation eddy-viscosity turbulence models are presented, which combine different elements of existing models that are considered superior to their alternatives.
Proceedings ArticleDOI
A one-equation turbulence model for aerodynamic flows
Philippe R. Spalart,S. Allmaras +1 more
Journal ArticleDOI
A hybrid RANS-LES approach with delayed-DES and wall-modelled LES capabilities
TL;DR: In this article, a CFD strategy is proposed that combines delayed detached-eddy simulation (DDES) with an improved RANS-LES hybrid model aimed at wall modelling in LES (WMLES).
Journal ArticleDOI
CFD simulation of the wind environment around an isolated high-rise building: An evaluation of SRANS, LES and DES models
Jianlin Liu,Jianlei Niu +1 more
TL;DR: In this article, the authors compared the performances of the Steady Reynolds Averaged Navier-Stokes (SRANS) RNG k-e, Large Eddy Simulation (LES) and Detached Eddy simulation (DES) modeling approaches in simulating the wind flow around an isolated building (with a 1:1:2 shape).
Journal ArticleDOI
Flow around a high-rise building using steady and unsteady RANS CFD: Effect of large-scale fluctuations on the velocity statistics
TL;DR: In this paper, the performance of the unsteady Reynolds-averaged Navier-Stokes (URANS) turbulence modeling of the flow field around a high-rise building with a 1:1:2 shape was examined.
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