A 3D fully thermo–hydro–mechanical coupling model for saturated poroelastic medium

Cui, Xin; Wong, Louis Ngai Yuen

doi:10.1016/j.cma.2022.114939

Cited by 17 publications

(5 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Past work has highlighted that hydrologic loading due to meteorological and oceanographic effects can induce seasonal variations in crustal seismic velocities in Japan ( 24 ). We use a 3D fully coupled hydromechanical model to simulate the evolution of excess pore pressure ( P p ) due to these environmental variations ( 26 ) and quantify the seasonal variations in seismic wave velocity.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Untangling the environmental and tectonic drivers of the Noto earthquake swarm in Japan

Wang,

Cui,

Frank

et al. 2024

Sci. Adv.

Self Cite

View full text Add to dashboard Cite

The underlying mechanism of the ongoing seismic swarm in the Noto Peninsula, Japan, which generates earthquakes at 10 times the average regional rate, remains elusive. We capture the evolution of the subsurface stress state by monitoring changes in seismic wave velocities over an 11-year period. A sustained long-term increase in seismic velocity that is seasonally modulated drops before the earthquake swarm. We use a three-dimensional hydromechanical model to quantify environmentally driven variations in excess pore pressure, revealing its crucial role in governing the seasonal modulation with a stress sensitivity of 6 × 10 −9 per pascal. The decrease in seismic velocity aligns with vertical surface uplift, suggesting potential fluid migration from a high–pore pressure zone at depth. Stress changes induced by abnormally intense snow falls contribute to initiating the swarm through subsequent perturbations to crustal pore pressure.

show abstract

Section: Resultsmentioning

confidence: 99%

“…A 3D fully coupled thermal-hydromechanical simulator HENGYI ( 26 ) is used in this study to simulate the pore pressure evolution underneath the Noto Peninsula from 2012 until 2023. We define the 3D geometry of the model by tracing the outline of the Noto Peninsula in map view and then sweeping the outline in the vertical direction by 10 km.…”

Section: Methodsmentioning

confidence: 99%

Untangling the environmental and tectonic drivers of the Noto earthquake swarm in Japan

Wang,

Cui,

Frank

et al. 2024

Sci. Adv.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Splitting the pressure term in the momentum equation allows TPA to account for both pressurized and open channel flows, with h s representing the pressure of the conduit in pressurized flow and h c measuring the flow depth in the open channel flow regime. In TPA, the pressure head and pipe acoustic wave speed are related by the following equation [29]:…”

Section: Mtpamentioning

confidence: 99%

“…Maddahian et al [28] employed 1d-3D analysis in rapid pressurization of a pipe system with an entrapped air pocket and showed that the modeling results are consistent with experiments. Different CFD-1D coupling analysis approaches, including the Picard-based and Newton-based methods, have been successfully utilized in other realms of engineering [29][30][31]. Nevertheless, to the best of the authors' knowledge, the 1D-3D coupling approach has not been utilized for calculating column separation so far.…”

Section: Introductionmentioning

confidence: 99%

Calculating Column Separation in Liquid Pipelines Using a 1D-CFD Coupled Model

Khani

Lim

Malekpour³

2022

Mathematics

View full text Add to dashboard Cite

This paper proposes a coupled 1D-CFD model for calculating column separation in liquid pipelines. ANSYS Fluent is utilized to calculate two-phase flow analysis. Method of Characteristics and Discrete Gas Cavity Model (DGCM) are both employed to conduct 1D transient analysis. The results show that the proposed model, with both 2D and 3D CFD analysis, captures the transient responses of the system that have nearly identical accuracy and are both consistent with the results of a physical experiment. The results of a pure CFD analysis are employed to evaluate the performance of the proposed model in capturing the shape of the vapor cavity. The comparison shows that the results are generally consistent. However, the vapor cavity in the pure CFD model is established and grown on top of a film of liquid, while the cavity in some places fills the whole pipe cross-section in the proposed model. In addition, the results obtained from using Modified Two-Component Pressure Approach (MTPA), an open-channel based model proposed by the authors, also confirm the results obtained from the pure CFD analysis. Some minor discrepancies are found, which may be attributed to the uniform velocity distribution considered at the interface between 1D and CFD zones.

show abstract

“…All the variables in the interface are taken into consideration for the former coupling method. Several researchers employed the full coupling strategy to solve the transient multi-physics coupling problems [29][30][31]. On the contrary, only the dominant variables are utilized in the latter.…”

Section: Introductionmentioning

confidence: 99%

Refined 1D–3D Coupling for High-Frequency Forced Vibration Analysis in Hydraulic Systems

Zhou¹,

Ye²,

Zhang³

et al. 2022

Energies

View full text Add to dashboard Cite

High-Frequency Pressure Fluctuation (HFPF) is an extensively observed hydraulic phenomenon in pumped-storage power stations and water conveyance projects. The investigation of the propagation characteristics of the pressure perturbation is of great significance for the safe operation of hydraulic facilities. In this study, a one-dimensional (1D)–three-dimensional (3D) coupling model is established based on the combination of the Method of Characteristics (MOC) and Computational Fluid Dynamics (CFD) and implanted in the open source software OpenFOAM. The established model in this study implants the dynamic mesh module into the original OpenFOAM solver sonicLiquidFoam and presents the complete solution procedure of the CFD model with the dynamic mesh considered. The vibration of the pipe walls modeled by the mesh motion is employed to numerically generate the HFPF in the hydraulic system, which could not be implemented in the traditional MOC model. The independence of the pressure perturbation in the pipeline system is validated by the time-domain pressure variation. The graphical method is applied to describe the multiple reflection and superposition characteristics of the traveling wave in a simplified hydraulic system. Based on this, the mechanism of the superimposed characteristic of the traveling and standing pressure waves in the hydraulic system are analyzed, and the theoretical superimposed time-domain processes and the variations of the pressure oscillation magnitude are analyzed and presented. The 1D–3D coupling method and the theoretical analysis method could be referenced by other complex hydraulic systems.

show abstract

A 3D fully thermo–hydro–mechanical coupling model for saturated poroelastic medium

Cited by 17 publications

References 60 publications

Untangling the environmental and tectonic drivers of the Noto earthquake swarm in Japan

Untangling the environmental and tectonic drivers of the Noto earthquake swarm in Japan

Calculating Column Separation in Liquid Pipelines Using a 1D-CFD Coupled Model

Refined 1D–3D Coupling for High-Frequency Forced Vibration Analysis in Hydraulic Systems

Contact Info

Product

Resources

About