Time-averaged topological flow patterns and their influence on vortex shedding of a square cylinder in crossflow at incidence

Huang, Rong Fung; Lin, Bing Hao; Yen, Shih-Chieh

doi:10.1016/j.jfluidstructs.2010.01.003

Cited by 68 publications

(86 citation statements)

References 44 publications

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“…For solving the above equations, only determining is necessary. Prantle in 1925 proposed equation (14) for determining this value [16]. ( 14 ) Using different turbulent models, the problem will be solved completely.…”

Section: Governing Equationsmentioning

confidence: 99%

“…King and Pfizenmayer [13] researched the sound generated by rigid cylinders in cross flow experimentally in 2009. Another experimental work has been carried out by Huang, Lin and Yen [14] in 2010. They studied flow regimes around a square cylinder between the angles of 0 to 45 degree and showed that the angle of 20 has a maximum Strouhal Number.…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic analysis of flow around square cylinders and determination of the strouhal number as a function of angles of attack and reynolds numbers

Razughi

Ghadimi

Kermani

2013

International Journal of Scientific World

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Hydrodynamic analysis of flow around square cylinders at different inclined angles of attach ranging from 0 to 45 at low Reynolds numbers, both in water and air, has been carried out using commercial software ANSYS CFX. Twenty different square cylinders were modeled at angles 0, 5, 10, 15, 20, 25, 30, 40 & 45 degrees. Results obtained by the hydrodynamic analyses were analyzed by Eureqa software to find a relation between non dimensional parameters. Strouhal number was determined to be a function of angle of attack and 1/Re in water and air. The obtained formulas were tested at two random angles of 33 and 50 against the results of Ansys-CFX. Comparison displayed good agreement which is demonstrative of the acceptability of the obtained relationships.

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Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrodynamic analysis of flow around square cylinders and determination of the strouhal number as a function of angles of attack and reynolds numbers

Razughi

Ghadimi

Kermani

2013

International Journal of Scientific World

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“…Associated flow-induced noise can be a significant nuisance. Understanding the interdependence between the geometry, the wake and the forces exerted on a body is very important and has been extensively studied over many years [13,19,24,26,33,45,60,64]. We focus on a square rod as a generic geometry.…”

Section: Chapter 2 Flow Around Square Rod At Incidenceliterature Reviewmentioning

confidence: 99%

“…One can observe a higher pressure fluctuation on rear face with respect to the side face for angles α > 15 o . Huang [24] gives in his review the following classification merging the two first groups of Igarashi [26] into a single one:…”

Section: Critical Angle Of Attack α Cr and Flow Regime Classificationmentioning

confidence: 99%

“…Locations of separation and reattachment of the boundary layer on the rod surface can be identified by examining the positions of accumulated oil strips on the rod surface. In the experiment of Huang [24], those are the dark-blue traces whose normalised locations can be seen in Figure 2.3: Two-dimensional flow patterns from Huang [24]. S denotes a saddle and N a node.…”

Section: Figure 22mentioning

confidence: 99%

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Large Eddy simulation of cross-flow around a square rod at incidence with application to tonal noise prediction

Mueller¹

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Power‐law flow and heat transfer over an inclined square bluff body: effect of blockage ratio

Kumar

Dhiman

Bharti

2013

Heat Trans. Asian Res.

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Flow and heat transfer of non‐Newtonian power‐law fluids over an inclined square cylinder placed inside a channel are studied numerically at low Reynolds numbers. In particular, calculations are carried out for Reynolds number (Re) = 1–40; power‐law index (n) = 0.4–1 and blockage ratio (β) = 12.5–50% at a Prandtl number (Pr) = 50. An increase in blockage ratio results in an increase in the total drag coefficient and decrease in the wake length. The Strouhal number and the root mean square value of the lift coefficient increase with the increasing Reynolds number for the fixed values of blockage ratio and power‐law index. The average Nusselt number increases with power‐law index and/or blockage ratio. The maximum enhancement in heat transfer is approximately 49, 41, and 35% for the values of blockages of 50, 25, and 12.5%, respectively, as compared to the corresponding Newtonian value. The average Nusselt number for the inclined square cylinder (at α = 45°) is always greater than the average Nusselt number for the regular square cylinder (at α = 0). Finally, simple expressions of drag and Nusselt number have been established for the above range of settings. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res 43(2): 167‐196, 2014; Published online 20 June 2013 in Wiley Online Library (http://wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21071

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Time-averaged topological flow patterns and their influence on vortex shedding of a square cylinder in crossflow at incidence

Cited by 68 publications

References 44 publications

Hydrodynamic analysis of flow around square cylinders and determination of the strouhal number as a function of angles of attack and reynolds numbers

Hydrodynamic analysis of flow around square cylinders and determination of the strouhal number as a function of angles of attack and reynolds numbers

Large Eddy simulation of cross-flow around a square rod at incidence with application to tonal noise prediction

Power‐law flow and heat transfer over an inclined square bluff body: effect of blockage ratio

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