Results 1 to 10 of about 1,101,461 (197)

Nonlinear Moving Boundary Model of Low-Permeability Reservoir

Energies, 2021
At present, there are two main methods for solving oil and gas seepage equations: analytical and numerical methods. In most cases, it is difficult to find the analytical solution, and the numerical solution process is complex with limited accuracy. Based
Xiarong Jiao, Shan Jiang, Hong Liu
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Sensitivity to the application range of buoyancy force in the diffuse-interface immersed boundary method

Journal of Fluid Science and Technology, 2022
We investigate the sensitivity to the application range of buoyancy force near the boundary in the diffuse-interface immersed boundary method. The flow fields not only inside the boundary but also outside the boundary are usually computed in the immersed
Madoka ENDO, Kosuke SUZUKI, Masato YOSHINO   +2 more
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Sensitivity analysis of vibration response of timoshenko beam to mass ratio and velocity of moving mass and boundary conditions: Semi-analytical approach

Forces in Mechanics, 2023
In real-world physics phenomena, the boundary conditions of structural members in the structural beam systems affect the system response. Also, moving load or mass problems are used widely in many engineering fields, such as structural, transportation ...
Amin Ghannadiasl, Massood Mofid
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A sharp interface direct-forcing immersed boundary method using the moving least square approximation

Journal of Fluid Science and Technology, 2021
Based on the Moving Least Square (MLS) approximation, we propose a sharp interface direct-forcing immersed boundary method for incompressible fluid flows with fixed and moving boundaries.
Mehdi BADRI GHOMIZAD, Hosnieh KOR, Koji FUKAGATA   +2 more
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Asymptotic Approximations of the Solution for a Traveling String under Boundary Damping [PDF]

Journal of Applied and Computational Mechanics, 2019
Transversal vibrations of an axially moving string under boundary damping are investigated. Mathematically, it represents a homogenous linear partial differential equation subject to nonhomogeneous boundary conditions.
Rajab A. Malookani, Sanaullah Dehraj, Sajad H. Sandilo   +2 more
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A Scalable Moving Boundary Treatment in the Lattice Boltzmann Method

Applied Sciences, 2021
Based on the lattice Boltzmann Method (LBM), a new moving boundary treatment is proposed by studying the influence of the moving boundary in a low-speed incompressible fluid.
Peng He, Jiang Xie, Liangjun Wang, Wu Zhang   +3 more
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Exact Null Controllability of a Wave Equation with Dirichlet–Neumann Boundary in a Non-Cylindrical Domain

Mathematics, 2023
In this paper, by applying the Hilbert Uniqueness Method in a non-cylindrical domain, we prove the exact null controllability of one wave equation with a moving boundary.
Lizhi Cui, Jing Lu
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Moving boundary problems [PDF]

Bulletin of the American Mathematical Society, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Unstable seepage modeling and pressure propagation of shale gas reservoirs

Petroleum Exploration and Development, 2016
Pressure disturbance propagation was investigated using the steady state replacement method, the relationship between moving boundary and time was obtained.
Weiyao ZHU, Qian QI, Qian MA, Jia DENG, Ming YUE, Yuzhang LIU   +5 more
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An analytical solution for fluid flow against valve closure in a long pipeline

Academia Engineering, 2023
In this study, we examine the situation at which a valve is closed against fluid flow in a long pipeline. The solution here obtained shows that the closure of the valve divided the flow region in the pipeline into several zones.
Arieh Pistiner
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