A very robust MMALE method based on a novel VoF method for two-dimensional compressible fluid flows

Sha, Bojiao; Jia, Zupeng

doi:10.1016/j.camwa.2024.02.003

Computers & Mathematics with Applications

2024

DOI: 10.1016/j.camwa.2024.02.003

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A very robust MMALE method based on a novel VoF method for two-dimensional compressible fluid flows

Bojiao Sha,

Zupeng Jia

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2024

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Cited by 3 publications

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Construction and Analysis of a Resource Optimization and Allocation Model for Large-Scale Online Classrooms

Zhang

2024

Applied Mathematics and Nonlinear Sciences

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Online classrooms are characterized by a large number of resources and a complex composition of student users, so how to mine the association between students’ learning habits, grades and other characteristics to achieve more effective resource provisioning and optimization. To achieve this objective, this paper proposes an Apriori classroom resource provisioning model that is optimized using the MPM algorithm. The model regards the data points as prime points, uses the MPM algorithm to track the trajectory of the prime points to avoid redundant polling, and then projects the data points onto the background grid, derives the derivation, and then projects it onto the data points to discover the correlation between the data and realize the effective allocation of classroom resources. According to the experimental findings, MPM-Apriori’s average BRPD and average RPD values are 0.32 and 3.33 when dealing with large-scale online classroom resource data, indicating improved optimality and stability. The average post-test mean score of each dimension of “Introduction to International Politics” is 0.378 points higher than the pre-test, and 66.6% of the indicators in the satisfaction survey on the effectiveness of classroom resource allocation have a satisfaction rate of more than 50%. It shows that the proposed online classroom resource allocation model has good application effects.

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Construction and Analysis of a Resource Optimization and Allocation Model for Large-Scale Online Classrooms

Zhang

2024

Applied Mathematics and Nonlinear Sciences

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Simulation Study of Microscopic Seepage in Aquifer Reservoirs with Water–Gas Alternated Flooding

Yang,

Zhou

2024

Energies

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Underground gas storage (UGS) is a beneficial economic method of compensating for the imbalance between natural gas supply and demand. This paper addresses the problem of a lack of research on the two-phase distribution pattern and seepage law during the water–gas alternated flooding in gas storage reservoirs. The study constructed a three-dimensional digital core of the aquifer reservoir based on Computed Tomography (CT) scanning technology, and extracted the connecting pore structure to establish the tetrahedral mesh model. A two-phase microscopic seepage model was established based on the Volume of Fluid (VOF)method, and microscopic gas and gas–liquid two-phase unsaturated microscopic seepage simulation was carried out. The results show that the effective reservoir capacity increases with the increase in the number of alternated flooding cycles. The irreducible water is mainly distributed in the dead-end of the pore space and small pore throats, and the residual gas is mainly distributed as a band in the gas–water interface and the dead-end of the pore space of the previous round. The reservoir capacity can be increased by appropriately increasing the intensity of injection and extracting and decreasing the pressure of the reservoir.

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A Study on the Breakthrough Pressure of Porous Rock Formations in Gas Storage Reservoirs

Gao,

Wang,

Wang

et al. 2024

Processes

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Breakthrough pressure of natural gas in rock is an important evaluation parameter in gas reservoir development. In this study, experimental measurements of porosity and permeability of the caprock core were carried out. A digital core model was obtained by body rendering of rock CT (Computed Tomography) slices using Avizo software. Then, the grid model was imported into Fluent software for a numerical simulation of natural gas breakthrough pressure in the core. The innovations of this paper include (1) an accurate calculation method of cap breakthrough pressure based on the VOF method; (2) the method performs a perceptual analysis of average pore radius, wettability, roughness height, and viscosity ratio.

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A very robust MMALE method based on a novel VoF method for two-dimensional compressible fluid flows

Cited by 3 publications

References 54 publications

Construction and Analysis of a Resource Optimization and Allocation Model for Large-Scale Online Classrooms

Construction and Analysis of a Resource Optimization and Allocation Model for Large-Scale Online Classrooms

Simulation Study of Microscopic Seepage in Aquifer Reservoirs with Water–Gas Alternated Flooding

A Study on the Breakthrough Pressure of Porous Rock Formations in Gas Storage Reservoirs

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