Estimating interfacial tension via relaxation of drop shapes and filament breakup

Mahari Tjahjadi; Julio M. Ottino; Howard A. Stone

doi:10.1002/aic.690400302

Estimating interfacial tension via relaxation of drop shapes and filament breakup

Mahari Tjahjadi, Julio M. Ottino, Howard A. Stone

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

Two methods are presented for calculating the interfacial tension between two immiscible Newtonian fluids. The procedures require only two measurements of the approximate interface shape during the low‐Reynold‐number interfacial‐tension‐driven transient motion of (i) the relaxation of a modestly elongated drop back to a spherical shape or (ii) the growth of capillary wave instabilities along the surface of a thread. The interfacial tension can be estimated by comparing the time differences between the two experimental measurements with tabulated and numerically generated results for the approximate shape evolution. The numerical results are generated using boundary integral method for similar model free‐boundary problems at low Reynolds numbers. The tabulated results are presented for drop to suspending fluid viscosity ratios 0.01 to 10.

Original language	English (US)
Pages (from-to)	385-394
Number of pages	10
Journal	AIChE Journal
Volume	40
Issue number	3
DOIs	https://doi.org/10.1002/aic.690400302
State	Published - Mar 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Biotechnology
Environmental Engineering
General Chemical Engineering

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10.1002/aic.690400302

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title = "Estimating interfacial tension via relaxation of drop shapes and filament breakup",

abstract = "Two methods are presented for calculating the interfacial tension between two immiscible Newtonian fluids. The procedures require only two measurements of the approximate interface shape during the low‐Reynold‐number interfacial‐tension‐driven transient motion of (i) the relaxation of a modestly elongated drop back to a spherical shape or (ii) the growth of capillary wave instabilities along the surface of a thread. The interfacial tension can be estimated by comparing the time differences between the two experimental measurements with tabulated and numerically generated results for the approximate shape evolution. The numerical results are generated using boundary integral method for similar model free‐boundary problems at low Reynolds numbers. The tabulated results are presented for drop to suspending fluid viscosity ratios 0.01 to 10.",

author = "Mahari Tjahjadi and Ottino, {Julio M.} and Stone, {Howard A.}",

year = "1994",

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T1 - Estimating interfacial tension via relaxation of drop shapes and filament breakup

AU - Tjahjadi, Mahari

AU - Ottino, Julio M.

AU - Stone, Howard A.

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Y1 - 1994/3

N2 - Two methods are presented for calculating the interfacial tension between two immiscible Newtonian fluids. The procedures require only two measurements of the approximate interface shape during the low‐Reynold‐number interfacial‐tension‐driven transient motion of (i) the relaxation of a modestly elongated drop back to a spherical shape or (ii) the growth of capillary wave instabilities along the surface of a thread. The interfacial tension can be estimated by comparing the time differences between the two experimental measurements with tabulated and numerically generated results for the approximate shape evolution. The numerical results are generated using boundary integral method for similar model free‐boundary problems at low Reynolds numbers. The tabulated results are presented for drop to suspending fluid viscosity ratios 0.01 to 10.

AB - Two methods are presented for calculating the interfacial tension between two immiscible Newtonian fluids. The procedures require only two measurements of the approximate interface shape during the low‐Reynold‐number interfacial‐tension‐driven transient motion of (i) the relaxation of a modestly elongated drop back to a spherical shape or (ii) the growth of capillary wave instabilities along the surface of a thread. The interfacial tension can be estimated by comparing the time differences between the two experimental measurements with tabulated and numerically generated results for the approximate shape evolution. The numerical results are generated using boundary integral method for similar model free‐boundary problems at low Reynolds numbers. The tabulated results are presented for drop to suspending fluid viscosity ratios 0.01 to 10.

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Estimating interfacial tension via relaxation of drop shapes and filament breakup

Abstract

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