Some new aspects of the slow flow of a viscous fluid through an axisymmetric duct expansion or contraction. I ? Numerical part

Sigli, D.; Monnet, P.

doi:10.1007/bf00388665

Cited by 7 publications

(7 citation statements)

References 14 publications

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“…For 1<Re<15R c values decrease, which agree well with Reference [10]. As the Re number is further increased, this value stays at the same value as indicated in Reference [10]. Ref.…”

Section: Creeping Flowsupporting

confidence: 89%

“…It is found that the dimensionless eddy reattachment length L r remains unchanged in the range of 0.01<R<1 with value of L r = 0.66 and agrees well with the experimental result at L r = 0.6 [10]. With an increasing of the Re number, Re>1, L r increases.…”

Section: Creeping Flowsupporting

confidence: 88%

“…With an increasing of the Re number, Re>1, L r increases. Further, the dimensionless ordinate of the eddy center R c also stays at the value of 1.886 while the value of Reference [10] equals about the value of 1.96. For 1<Re<15R c values decrease, which agree well with Reference [10].…”

Section: Creeping Flowmentioning

confidence: 97%

“…Further, the dimensionless ordinate of the eddy center R c also stays at the value of 1.886 while the value of Reference [10] equals about the value of 1.96. For 1<Re<15R c values decrease, which agree well with Reference [10]. As the Re number is further increased, this value stays at the same value as indicated in Reference [10].…”

Section: Creeping Flowmentioning

confidence: 97%

“…Badekas and Knight [4] have examined laminar axisymmetric sudden expansion flow numerically for 50<Re<200 and 1.5< <6 by using the full axisymmetric Navier-Stokes equations and the SIMPLE algorithm and presented complete correlation equations for the dimensionless reattachment length, location of eddy center and eddy intensity as functions of Reynolds number and expansion ratios. Other related studies can be found in References [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Numerical analysis of axisymmetric and planar sudden expansion flows for laminar regime

Dagtekin

Ünsal

2011

Numerical Methods in Fluids

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SUMMARYIn this study, the Navier-Stokes equations are solved numerically for axisymmetric and planar sudden expansion flows. The flow is considered laminar and steady state, and the fluid is incompressible. Finite difference equations are obtained using a control volume method in a non-staggered grid arrangement, and solved by line-by-line TDMA technique using the SIMPLEM (SIMPLEM-Modified) algorithm. Calculations are performed for higher expansion ratios, , ranging from 1.5 to 10 and Reynolds numbers from 0.1 to 500. Results are presented in terms of streamlines, relative eddy intensity, location of the eddy center, and the eddy reattachment length depending on Re number and values for both axisymmetric and planar sudden expansions. It is aimed to provide a picture of the effects of high values of expansion ratio and Reynolds number on the sudden expansion flow. As a result, it is found that the flow characteristics keep their structure for both higher expansion ratios and higher Reynolds numbers. Further, correlations were developed for the nondimensional eddy reattachment length, location of the eddy center and the relative eddy intensity, which have agreeable results to the computed results available from the literature.

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“…For 1<Re<15R c values decrease, which agree well with Reference [10]. As the Re number is further increased, this value stays at the same value as indicated in Reference [10]. Ref.…”

Section: Creeping Flowsupporting

confidence: 89%

Section: Creeping Flowsupporting

confidence: 88%