A review of integration between BIM and CFD for building outdoor environment simulation

Zheng, Lang; Lu, Weisheng; Wu, Liupengfei; Zhou, Qi

doi:10.1016/j.buildenv.2022.109862

Cited by 19 publications

(4 citation statements)

References 116 publications

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“…However, it is difficult and time-consuming to consider the detailed characteristics of individual buildings to describe the wind field of the urban environment accurately. A complex model of many buildings significantly increases the number of grids in the CFD simulation and the computational complexity of modeling, decreasing simulation efficiency [20,21].…”

Section: Introductionmentioning

confidence: 99%

A Generalization of Building Clusters in an Urban Wind Field Simulated by CFD

Qiu,

He,

et al. 2023

Atmosphere

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The urban climate has a critical influence on developing sustainable cities, and one important factor is the urban wind environment. Moreover, refining urban wind fields is required for the quantitative assessment of urban wind environments. Computational fluid dynamics (CFD) is a powerful tool for modeling the wind flow characteristics in urban areas. Although CFD has been widely used in various fields, its use for simulating urban wind fields has limitations because of the complexity of urban building models and the high computational workload. Accordingly, we consider the generalization parameters in the vertical and horizontal directions based on the CFD results and the building topology based on the state of the building nodes. We perform a two-dimensional generalization of building clusters, conduct spatial analysis in a geographic information system (GIS), and generate three-dimensional models. This generalization scheme is applied to Meiling Street in Jinjiang City, Fujian Province, China. The results indicate that the generalization decreases the number of buildings from 7003 to 3367 and the computation time from 11 h and 26 min to 10 h and 25 min. The computation efficiency is improved by 8.89%, with 1.85% changes in the average wind speed ratio. This scheme substantially improves the computational efficiency of urban wind field CFD simulations by reducing the geometric model’s complexity without compromising the accuracy. This strategy is suitable for simulating large-scale urban wind fields.

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Section: Introductionmentioning

confidence: 99%

A Generalization of Building Clusters in an Urban Wind Field Simulated by CFD

Qiu,

He,

et al. 2023

Atmosphere

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“…An emerging technology that is being utilized in structural engineering is the use of CFD. CFD is an integrable technology that can be used to estimate important information about the outdoor environment, such as wind flow patterns, air temperature distributions, relative humidity, and even contaminant concentrations if necessary [4]. In recent times, computational fluid dynamics (CFD) has emerged as a useful tool to address many similar problems [5].…”

Section: Introductionmentioning

confidence: 99%

Wind Loads on Structures: A Finite Element-Based Computational Fluid Dynamics Analysis in Evaluating the Wind Tunnel Effects on Low-Rise Structures

Flores,

Silva

2023

Fuzzy Systems and Data Mining IX

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This research paper evaluates the effects of wind tunnel testing on low-rise buildings using a Finite Element-based computational fluid dynamics (CFD) model in order to compare the results of the traditional Directional Procedure (Building of All Heights Method) to the results of the CFD analysis. This study utilized all necessary parameters for the Wind Tunnel Procedure in accordance with the National Structural Code of the Philippines section 207F together with the guidelines prescribed in ASCE 7-16. The mathematical prototype of 3 different buildings with the same dimensions were created using midas NFX, and the necessary boundary conditions for CFD analysis were set up. The pressure caused by wind load on these buildings were evaluated and compared with the Directional procedure in Section 207B of the NSCP (Buildings of all heights method). Atmospheric turbulence was also modelled using Kinetic Energy and Length Scale method utilizing 2-equation k-ε turbulence model. The results show significant differences in pressure effects on walls with considerable number of openings and unique façade features. CFD results also show accurate internal pressure and velocity profile in areas near the wall openings and building edges. This research is particularly relevant for the design and construction of buildings in areas prone to strong winds, such as the Philippines, where accurate wind load calculations are crucial to ensuring structural safety and integrity. While numerous studies in other countries have explored the impact of wind on low-rise structures through mathematical simulations, there remains a substantial gap in the Philippines regarding research concerning wind tunnel effects on structures using mathematical and numerical approaches. This study aims to fill this gap by connecting the existing National Structural Code of the Philippines with contemporary trends in mathematical simulations.

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“…By improving combustion efficiency and reducing emissions, CFD contributes to more sustainable energy production from fossil fuels during the transition to cleaner alternatives [9]. CFD is also used to optimize the design and layout of energy infrastructure, such as cooling systems for power plants [10] and energy-efficient buildings [11]. Efficient infrastructure reduces energy waste and promotes sustainable energy use.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Bioenergy Potential of Microfluidics: The Case of a T-Micromixer with Helical Elements for Sustainable Energy Solutions

Mahammedi,

Tayeb,

Rahmani

et al. 2023

Energies

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This study explores the potential application of microfluidics in the field of bioenergy, with a particular focus on the energy potential of biogas derived from vine shoots, a locally abundant waste material. The enhanced mixing capability of a micromixer has been analyzed to make it suitable for microfluidic energy applications. Mixing index, pressure drop, and kinematic measurements within the T-micromixer with helical elements and their related mixing performances have been studied and validated using CFD for different values of Reynolds number (0.1–60) for laminar Newtonian miscible fluid. Geometrical characteristics were further examined to improve the mixing performance. Various values of twisted angles were evaluated and compared to choose the optimal angle. A new parameter, Q, was introduced to represent the ratio of vorticity square over the sum of vorticity square and deformation square intensities. Furthermore, the results of the numerical simulation were compared with the given data in the literature, showing a significant agreement, in addition to the fact that a high-quality mixture can be created with a geometry angle of 90°, and a mixing index above 0.99 can be obtained at low Reynolds numbers. The numerical investigation of the flow regimes of miscible fluid in the T-microkenics with the proposed angle can be utilized to develop the mixing performance of the micromixers in a wide variety of processes.

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A review of integration between BIM and CFD for building outdoor environment simulation

Cited by 19 publications

References 116 publications

A Generalization of Building Clusters in an Urban Wind Field Simulated by CFD

A Generalization of Building Clusters in an Urban Wind Field Simulated by CFD

Wind Loads on Structures: A Finite Element-Based Computational Fluid Dynamics Analysis in Evaluating the Wind Tunnel Effects on Low-Rise Structures

Exploring the Bioenergy Potential of Microfluidics: The Case of a T-Micromixer with Helical Elements for Sustainable Energy Solutions

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