Experimental investigation on wake characteristics behind a yawed square cylinder

Lou, Xiaofan; Zhou, Tongming; Zhou, Yu; Wang, H.; Cheng, Liang

doi:10.1016/j.jfluidstructs.2015.11.017

Cited by 14 publications

(4 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When KC is further increased to 20, the difference of between 0° and 45° is very small. This could be due to the reason that at these KC values, the flow approaches that of a steady current, at which condition, the IP is verified for  40-45° [7], [16].…”

Section: Resultsmentioning

confidence: 94%

“…Whereas the validity of IP of a circular cylinder have been studied previously by a number of researchers (e.g. [7]- [11]) that of an inclined square cylinder is very limited. In a previous study by this research group [7], the validity of IP of an inclined square cylinder in steady flow has been evaluated at a Reynolds number of 7,000.…”

Section:  Cos  Itsmentioning

confidence: 99%

“…[7]- [11]) that of an inclined square cylinder is very limited. In a previous study by this research group [7], the validity of IP of an inclined square cylinder in steady flow has been evaluated at a Reynolds number of 7,000. In a more recent study by this group, the validity of IP of an inclined square cylinder in oscillatory flows was also examined in terms of the force coefficients and Strouhal number [12].…”

Section:  Cos  Itsmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Investigation of Flow Field Around an Inclined Square Cylinder Under Forced Oscillation

Zhou

Lou

2018

Advances in Fluid Mechanics XII

View full text Add to dashboard Cite

Flow structures in the wake of a square cylinder inclined with angles of  = 0, 15, 30 and 45 undergoing forced oscillation are investigated experimentally using particle image velocimetry (PIV) at Keulegan-Carpenter (KC) numbers in the range of 5-30 to examine the performance of the Independent Principle (IP). For KC < 6, there is no vortex shedding from the cylinder for all angles and as a result, the IP is valid. For KC 820, IP does not work satisfactorily because at large inclination angles, the shear layers are stretched and reattach to the upper and lower sides of the cylinder body for most of the time within one oscillating cycle. When KC is increased further to 25, the phenomenon of shear layer attachment when the cylinder is at the neutral position, as well as the significant shedding at the end of each half cycle, indicate a similar flow field for both vertical and inclined cylinders. The present investigation indicates that the IP is valid when KC  6 and KC  20 as it is analogous to a steady current.

show abstract

Section: Resultsmentioning

confidence: 94%

Section:  Cos  Itsmentioning

confidence: 99%

Section:  Cos  Itsmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigation of Flow Field Around an Inclined Square Cylinder Under Forced Oscillation

Zhou

Lou

2018

Advances in Fluid Mechanics XII

View full text Add to dashboard Cite

show abstract

“…Lou et al 137 analysed the effects of the yaw angle ranging from zero to 45 degrees at a Re = 3,600 on wake characteristics behind a square cylinder and observed that as the yaw angle increases, the rms components of the velocity, as well as the spanwise and transverse vortices, decrease. This considerable reduction of velocity fluctuations on the centerline leads to a reduction of the vortex strength.…”

Section: Square Cylindersmentioning

confidence: 99%

A review of experiments on stationary bluff body wakes

Feshalami

Scarano

et al. 2022

Physics of Fluids

View full text Add to dashboard Cite

Experimental studies dealing with the wake of isolated stationary bluff-bodies are reviewed. After briefly recalling the pioneering works in this domain, the paper focuses on recent research conducted with the latest experimental methods and techniques. The review encompasses a range of topics, including, the effects of bluff-body geometry (non-circular cross sections and nonuniformity in spanwise direction), steady and unsteady (periodic and non-periodic) inflow conditions; surface proximity (rigid wall, confinement and water free surface) and non-Newtonian fluids. Focus is brought to the flow physics of the wakes, including especially the complex threedimensional and oscillatory behaviours induced by the periodic vortex shedding phenomenon. The paper aims to offer a critical and systematic review of new knowledge and findings on the subject area, as well as emerging? and the most frequently adopted experimental techniques. The review also helps identifying knowledge gaps in the literature that need to be addressed in future investigations.

show abstract

Local scour around a pipeline sleeper system under different flow directions

Mamoon

Zhao

et al. 2023

Coastal Engineering

View full text Add to dashboard Cite

Experimental investigation on wake characteristics behind a yawed square cylinder

Cited by 14 publications

References 57 publications

Experimental Investigation of Flow Field Around an Inclined Square Cylinder Under Forced Oscillation

Experimental Investigation of Flow Field Around an Inclined Square Cylinder Under Forced Oscillation

A review of experiments on stationary bluff body wakes

Local scour around a pipeline sleeper system under different flow directions

Contact Info

Product

Resources

About