Some Aspects of Uncertainty in Computational Fluid Dynamics Results

Mehta, Unmeel B.

doi:10.1115/1.2926512

Cited by 54 publications

(18 citation statements)

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“…The CFD analysis was carried out using the ANSYS 12. boundary walls of the macroclimate (the flow domain) at a distance from the geometry to avoid reversed flow in the region (Mehta 1991).…”

Section: Computational Modelmentioning

confidence: 99%

“…The geometry of the standard row housing model (microclimate) with the height, width and length of 6, 10 and 9 m was used for the computational analysis. An enclosure representing the macroclimate was created to obtain a sufficient distance between the boundary conditions (Mehta 1991). The enclosure with a height, width and length of 23, 40 and 39 m creates a direct interface through the geometry.…”

Section: Design Geometrymentioning

confidence: 99%

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A numerical investigation into the feasibility of integrating green building technologies into row houses in the Middle East

Calautit

Hughes

Ghаni

2013

Architectural Science Review

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A traditional row house was re-designed to be adapted to the hot and arid climate of the Middle East. The vernacular design features include a number of cooling devices such as an open courtyard, wind towers and heat-storing building materials to reduce overheating during the summer months. This paper reports on the results of a computational fluid dynamics (CFD) modelling study of the performance of a wind tower incorporated into the row house to replace the traditional ventilation devices. The study investigated the ways in which the resulting natural air flows in the house operated using the ANSYS Fluent CFD tool to develop a numerical model of an optimized wind tower system. Achieved ventilation rates and temperature distribution inside the structure were investigated. The results demonstrated that the proposed wind tower configuration was able to increase the average indoor air velocity by 63%. An improved airflow distribution is observed inside the modified row housing model.

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Section: Computational Modelmentioning

confidence: 99%

Section: Design Geometrymentioning

confidence: 99%

A numerical investigation into the feasibility of integrating green building technologies into row houses in the Middle East

Calautit

Hughes

Ghаni

2013

Architectural Science Review

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“…The air streamline had a constant velocity of 3 m/s through the enclosure to simulate the actual wind environment. The enclosure (the flow domain) was set at a distance from the geometry to avoid reversed flow in the region [10]. A flow domain representation of the physical geometry of the wind tower design under investigation and location of set boundary conditions are shown in Figure 3.…”

Section: Cfd Set-upmentioning

confidence: 99%

CFD analysis of a heat transfer device integrated wind tower system for hot and dry climate

et al. 2013

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Increasing focus on reducing energy consumption has raised public awareness of renewable energy resources, particularly the integration of natural ventilation devices in buildings such as wind towers. The purpose of this study is to integrate heat transfer devices in a wind tower to meet the internal comfort criteria in extreme external condtions. Computational Fluid Dynamics (CFD) was used to develop a numerical model of a wind tower system and simulate the air flow pattern around and through the device to the test room. Results have indicated that the average internal airflow rate was reduced following the integration of the vertical and horizontal heat transfer device configuration, reductions of 4.11% and 8.21% was obtained respectively. The work also compared the thermal performance of the passive ventilation device incorporating traditional evaporative cooling and heat transfer devices. The proposed cooling system was capable of reducing the air temperatures by 12-15K.

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“…The CAD model was imported directly and an enclosure created to provide the external wind environment. The enclosure was set with boundary walls of the macroclimate (the flow domain) at 2.5 times the distance from the nearest geometrical face to avoid reversed flow in the region, a methodology widely used and validated for natural ventilation [10,11]. To establish the velocity entering and exiting the integrated wind turbine, two vertex points were created.…”

Section: Cfd Modelmentioning

confidence: 99%

Computational analysis of dynamic architecture

Chaudhry

Hughes

2011

Proceedings of the Institution of Mechanical Engineers, Part A:

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Dynamic architecture is a term devised for a new generation of off-grid high-rise structures that rotate. The proposed structures contain wind turbines between floors which are used to generate the power to rotate the floors and for consumption by residents. This study analyses the capabilities of this system in comparison with the standard vertical arrangement of a wind turbine. A performance analysis of the WinWind 3.0 MW wind turbine is performed. Data from the Dubai Meteorological Services were collected and analysed in conjunction with the performance analysis of this wind turbine. Furthermore computational fluid dynamic modelling was carried out and analysed for comparison. The results demonstrated that the standard horizontal orientation of a wind turbine yielded 80 per cent more power. The proposed horizontal orientation requires 46 turbines to generate enough power to sustain the consumption of the building.

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Some Aspects of Uncertainty in Computational Fluid Dynamics Results

Cited by 54 publications

References 0 publications

A numerical investigation into the feasibility of integrating green building technologies into row houses in the Middle East

A numerical investigation into the feasibility of integrating green building technologies into row houses in the Middle East

CFD analysis of a heat transfer device integrated wind tower system for hot and dry climate

Computational analysis of dynamic architecture

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