Numerical simulation of the bubble column at elevated pressure with a CFD-PBM coupled model

PurposeThe purpose of this paper is to perform the thermo-hydro-mechanical (THM) numerical analysis in order to study the thawing process for frozen soil and to predict the thawing settlement.Design/methodology/approachA new one-dimensional multi-field physical coupled model was proposed here to describe the thawing process of saturated frozen soil, whereby the void ratio varied linearly with effective stress (Eq. 10) and hydraulic conductivity (Eq. 27b). The thawing process was simulated with different initial and boundary conditions in an open system with temperature variations. The mechanical behavior and water migration of the representative cases were also investigated.FindingsThe comparisons of representative cases with experimental data demonstrated that the model predicts thawing settlement well. It was found that the larger temperature gradient, higher overburden pressure and higher water content could lead to larger thawing settlement. The temperature was observed that to distribute height linearly in both frozen zone and unfrozen zone of the sample. Water migration forced to a decrease in the water content of the unfrozen zone and an increase in water content at the thawing front.Research limitations/implicationsIn this study, only the one-directional thawing processes along the frozen soil samples were investigated numerically and compared with test results, which can be extended to two-dimensional analysis of thawing process in frozen soil.Originality/valueThis study helps to understand the thawing process of frozen soil by coupled thermo-hydro-mechanical numerical simulation.

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Numerical simulation of a square bubble column using Detached Eddy Simulation and Euler–Lagrange approach

International Journal of Multiphase Flow ◽

10.1016/j.ijmultiphaseflow.2018.06.006 ◽

2018 ◽

Vol 107 ◽

pp. 275-288 ◽

Cited By ~ 9

Author(s):

M.V. Masterov ◽

M.W. Baltussen ◽

J.A.M. Kuipers

Keyword(s):

Numerical Simulation ◽

Bubble Column ◽

Detached Eddy Simulation ◽

Eddy Simulation ◽

Lagrange Approach

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NUMERICAL SIMULATION OF CYCLONIC STORM SURGES OVER THE BAY OF BENGAL USING A METEOROLOGY-WAVE-SURGE-TIDE COUPLED MODEL

Coastal Engineering Proceedings ◽

10.9753/icce.v34.currents.26 ◽

2014 ◽

Vol 1 (34) ◽

pp. 26

Author(s):

Khandker Masuma Tasnim ◽

Ohira Koichiro ◽

Tomoya Shibayama ◽

Miguel Esteban ◽

Ryota Nakamura

Keyword(s):

Numerical Simulation ◽

Bay Of Bengal ◽

Coupled Model ◽

Storm Surges ◽

Cyclonic Storm

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Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

Chinese Journal of Chemical Engineering ◽

10.1016/j.cjche.2020.08.031 ◽

2020 ◽

Author(s):

Bay Van Tran ◽

Son Ich Ngo ◽

Young-Il Lim ◽

Keon Bae ◽

Dong Hyun Lee ◽

...

Keyword(s):

Flow Regime ◽

Bubble Column ◽

Elevated Pressure ◽

Homogeneous Flow

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Numerical Modeling of Oil Spill with Tidal and Wind-Driven Coupled Model in Bohai Bay

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.1394 ◽

2013 ◽

Vol 423-426 ◽

pp. 1394-1397

Author(s):

Ming Chang Li ◽

Guang Yu Zhang ◽

Qi Si ◽

Shu Xiu Liang ◽

Zhao Chen Sun

Keyword(s):

Numerical Simulation ◽

Numerical Modeling ◽

Oil Spill ◽

Hydrodynamic Model ◽

Field Data ◽

Coupled Model ◽

Bohai Bay ◽

Trajectory Simulation ◽

Simulation Results

Based on the hydrodynamic model and wind field data, a multi-module coupled oil spill model is constructed for simulating the trajectory of oil movement. A case study is researched in Bohai Bay. The model works well and the numerical simulation results show the model is suitable for oil spill trajectory simulation. Two cases are considered with and without wind to show its important influence for the oil spill.

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