NUMERICAL INVESTIGATION OF CONTACT ANGLE EFFECT ON OIL-WATER SEPARATION FLOW PASSING THROUGH A POROUS STRUCTURE

T. Ha; I. Yoon; S. Shin

doi:10.6112/kscfe.2024.29.4.247

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2024 Vol.29, Issue 4 Preview Page Next Page

Original Article

NUMERICAL INVESTIGATION OF CONTACT ANGLE EFFECT ON OIL-WATER SEPARATION FLOW PASSING THROUGH A POROUS STRUCTURE 접촉각에 따른 다공성 구조물을 통과하는 기름-물 유동의 유수분리 영향 연구

31 December 2024. pp. 247-256

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Abstract

The primary objective of this study is to analyze the movement of the oil-water contact line and its effect on oil-water separation under various external pressure gradients, surface properties, and cylinder spacing. Capital a two-dimensional numerical simulation based on the Level Contour Reconstruction Method(LCRM) was conducted to investigate the two-phase(oil-water) flow through the gaps between cylinders representing mesh geometry for oil-water separation filter. The study considered a range of external pressure gradients(0–1000 kPa/m) and cylinder spacings(100–1000 µm), with a focus on comparing two extreme surface conditions of hydrophilicity and hydrophobicity. The results demonstrate that variations in contact angle and cylinder spacing significantly influence oil-water separation efficiency. Hydrophilic surfaces maintained a stable contact line and resisted oil penetration even under increased external pressure gradient, whereas hydrophobic surfaces exhibited rapid oil infiltration due to the ease of contact line displacement. Notably, in a specific range of cylinder spacing(300 µm < d < 600 µm), hydrophilic surfaces sustained a stable separation state at much higher pressure gradient compared to hydrophobic surfaces.

Keywords

Computational Fluid Dynamics, CFD

Oil-water separation

Hydrophilic surface

Hydrophobic surface

Porous structure

키워드

전산유체역학

유수분리

친수성 표면

소수성 표면

다공성 구조물

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Information

Publisher :Korean Society for Computational Fluids Engineering
Publisher(Ko) :한국전산유체공학회
Journal Title :Journal of Computational Fluids Engineering
Journal Title(Ko) :한국전산유체공학회지
Volume : 29
No :4
Pages :247-256
Received Date : 2024-10-07
Revised Date : 2024-12-04
Accepted Date : 2024-12-04
DOI :https://doi.org/10.6112/kscfe.2024.29.4.247

Journal of Computational Fluids Engineering ISSN:1598-6071(Print) 3022-6252(Online) 한국전산유체공학회지

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