Modelling of fully separated flow past a circular cylinder: Problems and best practice

Kojouharova, J.; Weisweiler, Hardy

doi:10.1063/1.4934304

Cited by 1 publication

(1 citation statement)

References 7 publications

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“…are some of the important fundamental studies in the field. Given the wide applicability of flow across a cylindrical object, circular cylinder is the most studied geometry in the past [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Steady and Pulsating Flow Past a Heated Rectangular Cylinder(s) in a Channel

Saxena

2018

Journal of Thermophysics and Heat Transfer

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In the present study, the effect of laminar steady (Re=100, Pr=0.74) and pulsating flow (4 Hz and amplitude 0.4) is numerically studied over a centrally located heated rectangular cylinder of varying aspect ratio (W/H=1 to 8) in a confined channel using finite volume method. To study the influence of channel walls at a fix distance, eccentric placement of the highest aspect ratio cylinder(s) with two gap ratios (B/H) of 5 and 0.5 is done. Isotherms and streamlines of the flow are presented along with lift and drag coefficients. Further, FFT spectral analysis is performed to evaluate the vortex shedding frequency of the flow upon interaction with the cylinder(s). For single cylinder at the center position in the channel, natural vortex shedding and "lock-on" shedding occurs for lower aspect ratio cylinder under steady and pulsating flow, respectively. An increase in aspect ratio has a suppressi ng effect on the vortex shedding with a substantial decrease in the heat transfer over the cylinder. Placing two cylinders (W/H=8) at a geometrically symmetrical eccentric location of B/H=5shows an extra peak at half of the flow inlet frequency in FFT spectral curve that possibly confirms the "lock-on" shedding with increased heat transfer over the cylinder.

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Section: Introductionmentioning

confidence: 99%

Steady and Pulsating Flow Past a Heated Rectangular Cylinder(s) in a Channel

Saxena

2018

Journal of Thermophysics and Heat Transfer

View full text Add to dashboard Cite

show abstract

Modelling of fully separated flow past a circular cylinder: Problems and best practice

Cited by 1 publication

References 7 publications

Steady and Pulsating Flow Past a Heated Rectangular Cylinder(s) in a Channel

Steady and Pulsating Flow Past a Heated Rectangular Cylinder(s) in a Channel

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