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Effects of streamwise rotation on the dynamics of a droplet
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10.1063/1.4746282
/content/aip/journal/pof2/24/8/10.1063/1.4746282
http://aip.metastore.ingenta.com/content/aip/journal/pof2/24/8/10.1063/1.4746282
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The coordinate systems set up for an initially rotating droplet at angular velocity, , suddenly accelerated by a uniform free flow, U . The axis of rotation is aligned in the free stream (z-) direction.

Image of FIG. 2.
FIG. 2.

(y, z)-plane cut view of the droplet shape evolution and isometric view of the droplet shape at the moment with the largest deformation. (a) We i = 40 and , (b) We i = 40 and , (c) We i = 40 and and (d) We i = 0.4 and . The solid gray lines indicate earlier (y, z)-plane cut view of the initially rotating droplet. The solid black lines are the (y, z)-plane cut view of droplet shape at the moment with the largest deformation.

Image of FIG. 3.
FIG. 3.

Time histories of the frontal area, A*, for : (a) We i = 40, (b) We i = 4, and (c) We i = 0.4.

Image of FIG. 4.
FIG. 4.

Time histories of the droplet angular velocity, , for : (a) We i = 40, (b) We i = 4, and (c) We i = 0.4.

Image of FIG. 5.
FIG. 5.

(a) Instantaneous angular velocity, ω of the droplet, versus angular momentum, L, and (b) axial length of the droplet, a, versus angular velocity. Case I: We i = 40, Case II: We i = 4, and Case III: We i = 0.4.

Image of FIG. 6.
FIG. 6.

Dynamic drag coefficient time-histories (C D /A*) for : (a) We i = 40, (b) We i = 4, and (c) We i = 0.4.

Image of FIG. 7.
FIG. 7.

Dynamic drag coefficients versus Reynolds numbers for : (a) We i = 40, (b) We i = 4, and (c) We i = 0.4.

Image of FIG. 8.
FIG. 8.

Instantaneous projected streamlines onto the (y, z)-plane for initial Re i = 40, We i = 40, and λ = η = 50 with reference frame moving with the droplet centroid.

Image of FIG. 9.
FIG. 9.

Instantaneous projected streamlines onto the (y, z)-plane for initial Re i = 40, We i = 4, and λ = η = 50 with reference frame moving with the droplet centroid.

Image of FIG. 10.
FIG. 10.

Instantaneous projected streamlines onto the (y, z)-plane for initial Re i = 40, We i = 0.4, and λ = η = 50 with reference frame moving with the droplet centroid.

Image of FIG. 11.
FIG. 11.

Instantaneous three-dimensional streamlines for initial Re i = 40, We i = 40, and λ = η = 50 with the reference frame moving with the droplet centroid.

Image of FIG. 12.
FIG. 12.

Instantaneous three-dimensional streamlines for initial Re i = 40, We i = 0.4, and λ = η = 50 with reference frame moving with the droplet centroid.

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/content/aip/journal/pof2/24/8/10.1063/1.4746282
2012-08-23
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of streamwise rotation on the dynamics of a droplet
http://aip.metastore.ingenta.com/content/aip/journal/pof2/24/8/10.1063/1.4746282
10.1063/1.4746282
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