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Item
A Diffuse-interface Tracking Method for the Numerical Simulation of Motions of a Two-phase Fluid on a Solid Surface
https://aist.repo.nii.ac.jp/records/2002069
https://aist.repo.nii.ac.jp/records/20020693c13d24e-1c7d-4217-9715-873159cf1aa6
| Name / File | License | Actions |
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2014004104.pdf
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| Item type | Research Data (v9)(1) | |||||||||||
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| PubDate | 2014-01-01 | |||||||||||
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| Title | A Diffuse-interface Tracking Method for the Numerical Simulation of Motions of a Two-phase Fluid on a Solid Surface | |||||||||||
| Language | en | |||||||||||
| Description of data | ||||||||||||
| Description Type | Abstract | |||||||||||
| Description | Applicability of two kinds of computational-fluid-dynamics method adopting Cahn-Hilliard (CH) and Allen-Cahn (AC)-type diffuse-interface advection equations based on a phase-field model (PFM) is examined to simulation of motions of microscopic incompressible two-phase fluid on solid surface. A capillarity-driven gas-liquid motion in rectangular channel is simulated by use of a PFM method for solving Navier-Stokes (NS) equations and a CH equation, whereas an immiscible liquid-liquid flow in a microchannel with T-junction and square cross section is simulated by use of another PFM method proposed in this study, which adopts a lattice-Boltzmann method based on fictitious particles kinematics as numerical scheme for solving NS equations and an AC equation that is modified to improve volume-of-fluid conservation. The major findings are as follows: (1) effect of capillary force on the dynamic two-phase fluid system with a high density ratio is well predicted for cross-sectional aspect ratio of the channel = 1 and 2; (2) mono-dispersed slug flow pattern transition is reproduced in good agreement with experimental observations in terms of variation in length and interval of droplets as increasing their volumetric flow rates at a constant flow rate ratio = 1. These results prove that the PFM methods can be used for analyzing two-phase fluid motions in various microfluidic devices and micro fabrication processes. | |||||||||||
| Language | en | |||||||||||
| Author (Creator) name |
高田 尚樹
× 高田 尚樹
× 松本 純一
× 松本 壮平
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| Access Rights | ||||||||||||
| Access Rights | open access | |||||||||||
| Access Rights URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| APC | ||||||||||||
| APC | Not required | |||||||||||
| Rights Holder | ||||||||||||
| Right Holder Name | 高田 尚樹 | |||||||||||
| Language | en | |||||||||||
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| Publisher | Multi Science Publishing Co., Ltd. | |||||||||||
| Language | en | |||||||||||
| Date | ||||||||||||
| Date | 2014-01-01 | |||||||||||
| Date Type | Issued | |||||||||||
| Language | ||||||||||||
| Language | eng | |||||||||||
| Resource Type | ||||||||||||
| Resource Type Identifier | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| Resource Type | journal article | |||||||||||
| Identifier | ||||||||||||
| Identifier | 10.1260/1757-482X.6.3.283 | |||||||||||
| Identifier Type | DOI | |||||||||||
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| Relation Type | isVersionOf | |||||||||||
| Identifier Type | URI | |||||||||||
| Related Identifier | http://multi-science.metapress.com/content/4878620042310421/?genre=article&id=doi%3a10.1260%2f1757-482X.6.3.283 | |||||||||||
| Language | ja | |||||||||||
| Related Title | 関連 URI | |||||||||||
| Source Title | ||||||||||||
| Source Title | The Journal of Computational Multiphase Flows | |||||||||||
| Language | en | |||||||||||
| Volume Number | ||||||||||||
| Volume | 6 | |||||||||||
| Issue Number | ||||||||||||
| Issue | 3 | |||||||||||
| Page Start | ||||||||||||
| Start Page | 283 | |||||||||||
| Page End | ||||||||||||
| End Page | 298 | |||||||||||
