Opening and Compartmentalization Effects of Internal Pressure in Low-Rise Buildings with Gable and Hip Roofs

Tecle, Amanuel; Bitsuamlak, Girma; Chowdhury, Arindam

doi:10.1061/(asce)ae.1943-5568.0000101

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…12c, the components of the force in the along-wind and across-wind directions are called drag and lift, respectively. The drag, lift, and moment are affected by the shape of the body, the Reynolds number, and the incoming flow turbulence (Simiu and Yeo 2019). For horizontal flows, considering Bernoulli's equation, the airflow velocity (V) produces a local pressure (P) which can be written as…”

Section: Velocity Streamlinesmentioning

confidence: 99%

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Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation

Singh

Roy

2019

Int J Adv Struct Eng

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Roof shape and slope are both important parameters for the safety of a structure, especially when facing wind loads. The present study demonstrates the pressure variations due to wind load on the pyramidal roof of a square plan low-rise building with 15% wall openings through CFD (Computational Fluid Dynamics) simulation. Many studies on roofed structures have been performed in the past; however, a detailed review of the literature indicates that the majority of these studies focused on flat, hip, gable and spherical roofs only. There is a lack of research that analyses these effects on pyramidal roof buildings. ANSYS (Analysis System) ICEM (Integrated Computer Engineering and Manufacturing)-CFD and ANSYS Fluent commercial packages have been used for modelling and simulation, respectively, and ANSYS CFD Post was used to obtain the results. A realizable k-ε turbulent model was used for the pressure distribution on the roof of the building model. In the present study, twenty-four models with different roof slopes (α), i.e. 0°, 10°, 20°, and 30°, with various wind incidence angles (ϴ), i.e. 0°, 15°, 30°, 45°, 60° and 75° were investigated. The influence of roof slope and wind incidence angle are analysed in this study. Results have been represented through pressure coefficient (Cp) contours on the roof surface and velocity streamlines of the flow field of the different cases. The optimization of the roof slope may be achieved by considering different wind incidence angles for buildings so that they may better withstand wind force in a specific area. When wind pressure coefficients from building models with openings were compared with pressure coefficients from building models without openings, it was found that the pressure coefficients for building models without openings are almost twice or three times that of the pressure coefficients for models with openings.

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Section: Velocity Streamlinesmentioning

confidence: 99%

“…Building model and b meshing of CFD domain with quality check Wind tunnel experimental study velocity profile (U) and turbulence intensity (I) used for CFD simulation(Sanyal 2018;Sarkar et al 2014;Simiu 2019; Stathopoulos and Baniotopoulos 2007) …”

mentioning

confidence: 99%

Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation

Singh

Roy

2019

Int J Adv Struct Eng

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“…It was reported that severe damages took place among low-and medium-rise buildings as a result of heavy wind in extreme weather conditions [38]. Consequently, various theoretical and experimental investigations have been carried out on low-and medium-rise building models to examine the performance of the structures during excessive wind events in order to estimate and control the windinduced loads [39][40][41][42][43]. Dynamic wind loads on buildings generate vibrations simultaneously in all directions, and the response of the buildings can be determined through the fundamental mode response analysis.…”

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confidence: 99%

Evidence of extreme events in wind-induced normal stress of the columns of low- and medium-rise building structures

Suresh

Gopal

Pillai

et al. 2021

EPL

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We designed models for low- and medium-rise building structures with square and rectangular plans and tested the wind-induced normal stress of the building columns. We demonstrate the structures' normal stress response due to the wind load is non-Gaussian and shows evidence of extreme events, which are four to seven times larger than the mean standard deviation. We have estimated the probability distribution function to corroborate the long-tail nature of the extreme events, and randomness of the events is confirmed by plotting inter-event intervals and return maps. Further, the number of extreme events is calculated, which validates the exponentially decaying fit as a function of the number of standard deviations.

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Parameters to be Considered for Wind Analysis of Roofs with Openings—A Review

Mary¹,

Nizar²

2019

Lecture Notes in Civil Engineering

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Opening and Compartmentalization Effects of Internal Pressure in Low-Rise Buildings with Gable and Hip Roofs

Cited by 9 publications

References 18 publications

Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation

Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation

Evidence of extreme events in wind-induced normal stress of the columns of low- and medium-rise building structures

Parameters to be Considered for Wind Analysis of Roofs with Openings—A Review

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