Studies on the effect of mean wind speed profile on the height of air layer affected by buildings

Chand, Ishwar; Bhargava, Pradeep

doi:10.1016/0960-1481(92)90089-l

Cited by 2 publications

(4 citation statements)

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“…For demonastrating the flow of the fluid,pertinent boundary conditions are necessary for actual simulation of flow.It is always problematic to define the limiting circumstances at the outlet and inlet of the flow domain.At the windward margin,a velocity inlet was used. Velocity, which is denoted by U is changing with height of the inlet domains and is comparable to the experimental research directed by Chand and Bhargava (1992, 1995, 1997) [24,25,26,27] and Roy et al…”

Section: Boundary Conditionssupporting

confidence: 75%

Wind Load Analysis on Gable Roof of Low-Rise Building

Tariq

Singh²,

Singh³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The effect of pressure because of the winds on the exterior of gable roof of a low-rise single-storey building has been analyzed in present research using CFD simulation. Roof slope, which is most important factor for safety of structure was taken into consideration. Many past researchers have studied roofed structures but the majority of these researches have been carried on flat roofs, hip roof, spherical roofs, pyramidal roofs. There is need of researches that analyses effect of winds on gable roofs as these kinds of roofs are generally more susceptible to wind damage. ANSYS ICM is used for modeling and meshing and ANSYS Fluent for simulation. Results are extracted here using CFD post. In this very study three models with slope ang 10°, 20° and 30° with same incidence angle 0° were examined. This study analyses the effect of slope of the roof and angle of incidence of wind. The streamlines of velocity around the building model and pressure coefficient (Cp ) contours on the surfaces of the roof are opted here to represent the results. When results were plotted it was found that pressure coefficients were switching from negative to positive as the slope of the roof increases and the formation of vortex on leeward gets complicated as we go on increasing the slopes.

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Section: Boundary Conditionssupporting

confidence: 75%

Wind Load Analysis on Gable Roof of Low-Rise Building

Tariq

Singh²,

Singh³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…With the following expressions for the along-wind component of velocity, a velocity inlet was used at the windward boundary. Velocity, U, which is varying with eight of the inlet domains, is similar to the experimental study conducted by Roy et al (2012) and Chand and Bhargava (1992, 1995, 1997, 1998. Standard depiction of the velocity profile in the atmospheric boundary layer (ABL) is as shown below:…”

Section: Boundary Conditionsmentioning

confidence: 65%

“…In the present study, the wind load investigation for pyramidal roof of a square plan low-rise building has been carried out through CFD modelling and simulation. Different types of wind tunnel experimental study at CSIR-CBRI, Roorkee, India, have been conducted by Roy et al (2012b) and Chand et al (1992Chand et al ( , 1995Chand et al ( , 1997Chand et al ( , 1998. Roy et al (2012a, b) carried out the wind load investigation for pyramidal roof of a square plan low-rise building.…”

Section: Cfd Simulation Of the Wind Tunnel Experimental Studymentioning

confidence: 99%

“…The detailed analysis of the flow field, performing CFD simulation, is modelled simultaneously in the same computational domain. The wind tunnel velocity and turbulence intensity measurements used in this study are from the experimental wind tunnel study on wind loads on different types of building carried out by Chand and Bhargava (1992); Chand et al (1995); Chad and Bhargava (1997); Chand et al (1998). CFD simulation study on pyramidal roof buildings with different wind incident angles carried out by Roy et al (2012) is used for CFD model validation in the present study.…”

Section: Introductionmentioning

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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Studies on the effect of mean wind speed profile on the height of air layer affected by buildings

Cited by 2 publications

References 0 publications

Wind Load Analysis on Gable Roof of Low-Rise Building

Wind Load Analysis on Gable Roof of Low-Rise Building

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

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