Influences of wind flow over heritage sites: A case study of the wind environment over the Giza Plateau in Egypt

Hussein, Ashraf S.; El‐Shishiny, Hisham

doi:10.1016/j.envsoft.2008.08.002

Cited by 47 publications

(24 citation statements)

References 17 publications

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“…Mesh cell-size continuity was considered at the interfaces between the three subdomains to efficiently minimize the numerical dissipation at these interfaces. The mesh cell-size continuity between the different subdomains and the quality of the entire computational mesh have been confirmed [Hussein and El-Shishiny 2009]. …”

Section: Mesh Generationmentioning

confidence: 91%

“…Although their investigations shed some light on the vulnerable parts of the Sphinx, which experience maximum wind pressure and friction, the study did not consider the Sphinx surrounding topography and the corresponding wind interactions. Recently, Hussein and El-Shishiny [2009] presented their computational framework to investigate the influences of wind flow over heritage sites. This framework employs the three-dimensional Reynolds Averaged Navier-Stokes (RANS) equations along with the multiblock approach and nonconformal meshes to perform wind flow simulations over such sites with complex geometry and disparate length scales.…”

Section: Introductionmentioning

confidence: 99%

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Wind flow modeling and simulation over the Giza Plateau cultural heritage site in Egypt

Hussein

El‐Shishiny²

2009

J. Comput. Cult. Herit.

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In this article, the wind flow over one of the most important Egyptian historical heritage sites, the Giza Plateau, was investigated using the Computational Fluid Dynamics (CFD) state-of-the-art techniques. The present study addresses the influences of wind flow structure, as an important denudation factor, on the site and its famous monuments: the Pyramids and the Great Sphinx. Three-dimensional CFD simulations have been performed based on the Reynolds Averaged Navier-Stokes (RANS) equations for the cases of the northwest wind, at the average wind speed over the year, and the southwest windstorms. In addition, the wind-driven sand was considered for the same cases. Particular attention was paid to the Great Sphinx and the Pyramids to investigate their parts most vulnerable to the wind, which is contributing to the erosion of these monuments. The Great Sphinx was buried by sand and it was cleared several times throughout its history. In this study, we also address the less understood, yet important, burial mechanism of the Great Sphinx. The present work may give more insight to the effect of wind around the Giza Plateau when developing a global plan for conserving and protecting the site. ACM Reference Format:Hussein, A. S. and El-Shishiny, H. 2009. Wind flow modeling and simulation over the Giza Plateau cultural heritage site in

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Section: Mesh Generationmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Wind flow modeling and simulation over the Giza Plateau cultural heritage site in Egypt

Hussein

El‐Shishiny²

2009

J. Comput. Cult. Herit.

Self Cite

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“…Two methods are commonly used by CFD practitioners to formulate a profile of k (see for example Hussein and El-Shishiny, 2009;Ramponi and Blocken, 2012;Steffens et al, 2013), especially when detailed experimental data about the streamwise turbulence intensity (I u ) or (and) the fluctuating velocity components (u 0 ; v 0 ; w 0 ) is available.…”

Section: Effect Of Kmentioning

confidence: 99%

Modeling of coupled urban wind flow and indoor air flow on a high-density near-wall mesh: Sensitivity analyses and case study for single-sided ventilation

Mak

2014

Environmental Modelling & Software

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“…Such discrepancies are a well-known deficiency of the steady RANS approach combined with two-equation turbulence models. Although more advanced turbulence modelling approaches, for example large-eddy simulation or direct numerical simulation, could result in more accurate CHTC results on these surfaces, steady RANS is still often preferred for complex configurations at high Reynolds numbers for reasons of computational economy (e.g., Hussein and El-Shishiny, 2009;van Hooff and Blocken, 2010;Gousseau et al, 2011;van Hooff et al, 2011). Based on this perspective, it was also used in this study.…”

Section: Numerical Simulationmentioning

confidence: 99%

CFD simulation of heat transfer at surfaces of bluff bodies in turbulent boundary layers: Evaluation of a forced-convective temperature wall function for mixed convection

Defraeye

Blocken

Carmeliet

2012

Journal of Wind Engineering and Industrial Aerodynamics

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Keywordswall function; computational fluid dynamics; buoyancy; convective heat transfer coefficient; cube; urban heat transfer; mixed convection Defraeye T., Blocken B., , CFD simulation of heat transfer at surfaces of bluff bodies in turbulent boundary layers: evaluation of a forced-convective temperature wall function for mixed convection, Journal of Wind Engineering and Industrial Aerodynamics 104-106, 439-446. http://dx.doi.org/10.1016/j.jweia.2012.02.001 Abstract Accurate predictions of convective heat transfer are essential in building-engineering and environmental studies on urban heat islands, building energy performance, (natural) building and inter-building ventilation and buildingenvelope durability and conservation. In computational fluid dynamics (CFD) studies of these applications, wall functions are mostly used to model the boundary-layer region. Recently, an adjusted wall function for temperature (CWF) has been proposed (Defraeye, T., Blocken, B., Carmeliet, J., 2011a.). This CWF was intended for forcedconvective heat transfer at surfaces of bluff bodies, such as buildings in the atmospheric boundary layer (ABL). This CWF provides increased (wall-function) accuracy for convective heat transfer predictions and can be easily implemented in existing CFD codes. As ABL flow around buildings is often in the mixed-convective regime, the CWF performance is evaluated for situations with mixed convection in this paper. The CWF accuracy for mixed convection (~16% for the convective heat transfer coefficient, CHTC) is also much better than standard wall functions (~47% for the CHTC), but is Richardson-number dependent. The CWF approach can therefore significantly improve the accuracy of forced-or mixed-convective heat transfer in large-scale building-engineering or environmental studies, which are bound to rely on wall functions, but where accurate convective heat transfer predictions are required.Defraeye T., Blocken B., Carmeliet J. (2012), CFD simulation of heat transfer at surfaces of bluff bodies in turbulent boundary layers: evaluation of a forced-convective temperature wall function for mixed convection, Journal of Wind [439][440][441][442][443][444][445][446]

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Influences of wind flow over heritage sites: A case study of the wind environment over the Giza Plateau in Egypt

Cited by 47 publications

References 17 publications

Wind flow modeling and simulation over the Giza Plateau cultural heritage site in Egypt

Wind flow modeling and simulation over the Giza Plateau cultural heritage site in Egypt

Modeling of coupled urban wind flow and indoor air flow on a high-density near-wall mesh: Sensitivity analyses and case study for single-sided ventilation

CFD simulation of heat transfer at surfaces of bluff bodies in turbulent boundary layers: Evaluation of a forced-convective temperature wall function for mixed convection

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