Study of Pressure Distribution on an Irregular Octagonal Plan Oval-Shape Building Using CFD

Kumar, Arun; Raj, Ritu

doi:10.28991/cej-2021-03091760

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…In truth, CFD is a method of numerically solving these equations and obtaining flow variables as a result. The number of unknown variables, such as velocity, pressure, and temperature must be defined for each flow field variable [30,31]. Even for more difficult flows such as turbulent and free surface motion flows, a unique numerical solution may be demonstrated theoretically in the majority of cases.…”

Section: Methodsmentioning

confidence: 99%

Hydraulic Performance of Seawater Intake System Using CFD Modeling

Yamini

Movahedi

Mousavi

et al. 2022

JMSE

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In recent years, tapping the sea for potable water has gained prominence as a potential source of water. Since seawater intake systems are often used in the infrastructure industry, ensuring proper efficiency in different operating conditions is very important. In this paper, CFD modeling is used to show general hydraulic design (flow patterns, stream flow, vortex severities, and pre-swirl) principles and performance acceptability criteria for pump intakes in different conditions. The authors explore scenarios for avoiding or resolving hydraulic problems that have arisen as a result of hydraulic model studies. The results show that the designer should make every effort to avoid small entrance and filtration areas from the basin to the intake forebay bottom, which could result in jet outlet and/or supercritical flow; too small logs at the basin outflow, which could result in high velocity flow jets; and sudden area contractions at the forebay to pump bay junction. There should be enough submergence at the pumps to reduce harmful vortex severities and pre-swirl. Curtain walls, baffles, fillets, and splitters, as well as flow redistributors, can all aid in improving approach flow patterns. Reduced flow separations and eddies will be greatly assisted by rounding corners and providing guide walls. Using a numerical model to figure out what is wrong and how to fix it will help the facility’s costs and maintenance decrease in the long run.

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Section: Methodsmentioning

confidence: 99%

Hydraulic Performance of Seawater Intake System Using CFD Modeling

Yamini

Movahedi

Mousavi

et al. 2022

JMSE

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show abstract

“…[1] calculated the uncertainties that arise while using computational fluid dynamics to forecast wind loads for full-scale constructions. [2] analyzed the properties of wind flow and the distribution of wind pressure on the surfaces of an octagonal-shaped building model. [3] studied the effects of wind on tall buildings using CFD simulation in various ways.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wind Effects on Tall Buildings of Irregular Cross-Sections Using Numerical Simulation

S M,

Sharma,

Raj

2024

Computational Analysis of Buildings

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The number of buildings built increased as the population grew, which in turn reduced the amount of available land. As a result of this more and more high-rise structures are being constructed to meet the existing demands. These high-rise structures are more vulnerable than a low-rise structure to dynamic loadings like wind load and earthquake load. The wind loads are such that, its effect increases as height increases. This study uses numerical simulations to examine the impact of wind load on high-rise structures with two alternative "Fish" shapes- Model 1 (S-1) and Model 2 (S-2). CFD simulation software ANSYS is used here. Both the shapes are analysed in isolated condition. Angles of wind incidence ranges from 0° to 180°. The scale used here is 1:100. The coefficient of pressure at different wind incidence angles and velocity streamlines of both models are found in the result part. Both the model shows almost similar variation in Cp in majority of faces under different wind incidence angles. Model 2 exhibited better streamline pattern at every angles.

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“…Raj et al (2020) [24] numerically investigate wind action on "H" plan shaped tall buildings. Kumar and Raj (2021) [25] numerically investigated the pressure distribution on an irregular octagonal plan oval shape building model and a detailed analysis of wind effects is provided in the form of pressure contours. [26] evaluated the interference effect on corner configured structures with variable geometry and blockage configurations under wind loads using CFD and it is observed that shielding effect suppress the interference effects on the principal building.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Wind Loads on Y Plan-Shaped Tall Building Using CFD

et al. 2022

Self Cite

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The increase in the population is at an exponential rate, and the available land is in the form of irregular shapes. That is why irregular shapes are very commonly built. Wind load increases with respect to height, so wind load evolution is necessary for such high-rise structures. Wind forces majorly depend on the plan's cross-sectional shape. Therefore, for an irregular shape, an investigation is needed for tall buildings. This paper demonstrates a detailed study on velocity stream line, external pressure coefficients, pressure distribution on the surfaces of the building and the turbulence kinetic energy for the Y-shaped plan for tall buildings under wind excitation for wind incidence angles of 0o to 180o. k- turbulence model is utilized to solve the problem using computational fluid dynamics techniques in ANSYS for terrain category II as per IS: 875 (Part3), 2015. Wind ward faces in all building models show positive pressure distribution, while the leeward faces are under the effect of negative pressure distribution. Wind load can be reduced on building models by modifying the corners, such as chamfering, rounding, and double recessed. The variation of pressure distribution on different faces of a "Y" plan shaped tall building for 0° and 180° is investigated using ANSYS CFX, and the pressure contours are plotted for all the faces of different "Y" shaped buildings to compute the effect of corner modification on pressure distribution. In this research, it was found that building models with rounded corners are highly efficient in resisting the wind load. Doi: 10.28991/CEJ-2022-08-02-06 Full Text: PDF

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Study of Pressure Distribution on an Irregular Octagonal Plan Oval-Shape Building Using CFD

Cited by 14 publications

References 10 publications

Hydraulic Performance of Seawater Intake System Using CFD Modeling

Hydraulic Performance of Seawater Intake System Using CFD Modeling

Analysis of Wind Effects on Tall Buildings of Irregular Cross-Sections Using Numerical Simulation

Numerical Study of Wind Loads on Y Plan-Shaped Tall Building Using CFD

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