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http://dx.doi.org/10.7837/kosomes.2018.24.5.611

CFD Validation of Solid-Liquid Two-Phase flow for Analysis of Drilling Fluid Flow Characteristics  

Choi, Yong-Seok (Busan Headquarters, Korea Marine Equipment Research Institute)
Park, Jae-Hyoun (Busan Headquarters, Korea Marine Equipment Research Institute)
Bae, Jae-Hwan (Busan Headquarters, Korea Marine Equipment Research Institute)
Lee, Bong-Hee (Busan Headquarters, Korea Marine Equipment Research Institute)
Kim, Jeong-Hwan (Busan Headquarters, Korea Marine Equipment Research Institute)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.24, no.5, 2018 , pp. 611-618 More about this Journal
Abstract
In this study, numerical analysis of solid-liquid two-phase flow was conducted as a preliminary step to analyze the flow characteristics of drilling fluid using the commercial CFD code, ANSYS CFX 14.5. The homogeneous model and separated flow model were used to simulate solid-liquid two-phase flow phenomena. In the separated flow model, Gidaspow's drag force model was applied with the kinetic theory model was applied for solid particles. The validity of the numerical model used in this study was verified based on the published experimental results. Numerical analysis was carried out for volume fractions of 0.1 to 0.5 and velocities of 1 to 5 m/s in a horizontal tube with a diameter of 54.9 mm and a length of 3 m. The Pressure drop and volume fraction distribution of solid particles were confirmed. The pressure drop was predicted using the homogeneous model and separated flow model within the MAE of 17.04 % and 8.98 %, respectively. A high volume fraction was observed in the lower part of the tube, and the volume fraction decreased toward the upper part. As velocity increased, variations in volume fraction distribution at varying heights were decreased, and the numerical results predicted these flow characteristics well.
Keywords
CFD; Drilling fluid; Homogeneous model; Numerical analysis; Separated model; Solid-liquid two-phase flow; Solid particle;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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