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Applying Resin Radial Injection for Manufacturing Fiber-Reinforced Polymer Composite: Advanced Mathematical Modeling and Simulation.
Polymers (Basel)
December 2024
Department of Mechanical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil.
Recently, the liquid composite molding technique (LCM) has been used for producing fiber-reinforced polymer composites, since it allows the molding of complex parts, presenting good surface finishing and control of the mechanical properties of the product at the end of the process. Studies in this area have been focused on resin transfer molding (RTM), specifically on the resin rectilinear infiltration through the porous preform inserted in the closed cavity neglecting the sorption effect of the polymeric fluid by the reinforcement. Thus, the objective of this work is to predict resin radial flow in porous media (fibrous preform), including the effect of resin sorption by fibers considering a one-dimensional approach.
View Article and Find Full Text PDFImproving coalbed methane recovery in fragmented soft coal seams with horizontal cased well cavitation.
Sci Rep
December 2024
CCTEG Xi'an Research Institute, Xi'an, 710077, Shaanxi, China.
Effective coalbed methane extraction from soft coal seams is essential for mine safety and energy supply. To enhance the extraction efficiency of coal mine methane (CMM) and reduce the risk of gas outbursts in coal mining areas, we developed an original and innovate horizontal well hydraulic cavitation method. A mathematical model that can quantitatively optimize construction parameters and improve the effectiveness of engineering applications was also constructed to calculate the technological parameters of this construction method.
View Article and Find Full Text PDFA numerical platform for predicting the performance of paper-based analytical devices.
Anal Methods
November 2024
Dept. of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay, Hong Kong.
This article presents a numerical platform for predicting the performance of paper-based analytical devices. The capillary flow, reaction, dissolution, and other physicochemical phenomena associated with device operation are accounted for using Darcy's law, Richard's equation and other transport equations. The platform can be used for different paper substrates, biorecognition methods, detection systems (such as optical and electrochemical detection), device patterns and dimensions, and ways in which the device is operated such as the input method of the body fluid.
View Article and Find Full Text PDFModelling of enhanced gas extraction in low permeability coal seam by controllable shock wave fracturing.
Sci Rep
October 2024
College of Mining, Liaoning Technical University, Fuxin, 123000, China.
The controlled shock wave (CSW) fracturing is an effective method for enhancing permeability of coal seam to promote gas extraction. Based on Fick's law, Darcy's law, the ideal gas law and the Langmuir equation, a damage-seepage-deformation coupling mathematical model of CSW fracturing in coal seam combined with the maximum tensile stress and the Mohr-Coulomb criterion is established. This model is implemented into COMSOL Multiphysics to simulate the coal seam CSW fracturing and subsequent gas extraction.
View Article and Find Full Text PDFFlow Characterization in a Partially Liquefied Vitreous Humor.
Transp Porous Media
February 2024
Aerospace and Mechanical Engineering, USC Viterbi School of Engineering, Los Angeles, CA 90089, USA.
The purpose of this study is to systematically examine the basic fluid dynamics associated with a fully liquid region within a porous material. This work has come about as a result of our investigation on the ocular fluid dynamics and transport process in a partially liquefied vitreous humor. The liquid is modeled as a sphere with Stokes flow while the surrounding infinite porous region is described by Brinkman flow.
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