Research on Reservoir Numerical Simulation with Consideration of Time-dependent Physical Properties

AbstractMultitudinous topological configurations spawn oases of many physical properties and phenomena in condensed-matter physics. Nano-sized ferroelectric bubble domains with various polar topologies (e.g., vortices, skyrmions) achieved in ferroelectric films present great potential for valuable physical properties. However, experimentally manipulating bubble domains has remained elusive especially in the bulk form. Here, in any bulk material, we achieve self-confined bubble domains with multiple polar topologies in bulk Bi0.5Na0.5TiO3 ferroelectrics, especially skyrmions, as validated by direct Z-contrast imaging. This phenomenon is driven by the interplay of bulk, elastic and electrostatic energies of coexisting modulated phases with strong and weak spontaneous polarizations. We demonstrate reversable and tip-voltage magnitude/time-dependent donut-like domain morphology evolution towards continuously and reversibly modulated high-density nonvolatile ferroelectric memories.

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Numerical Simulation of Time-Dependent Contact and Friction Problems in Rigid Body Mechanics

SIAM Journal on Scientific and Statistical Computing ◽

10.1137/0905028 ◽

1984 ◽

Vol 5 (2) ◽

pp. 370-393 ◽

Cited By ~ 77

Author(s):

Per Lötstedt

Keyword(s):

Numerical Simulation ◽

Rigid Body ◽

Time Dependent ◽

Rigid Body Mechanics

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Time-dependent Ginzburg–Landau equation of charge-density-waves and numerical simulation of the sliding

Physica B Condensed Matter ◽

10.1016/j.physb.2014.11.029 ◽

2015 ◽

Vol 460 ◽

pp. 6-10 ◽

Cited By ~ 2

Author(s):

Masahiko Hayashi ◽

Yositake Takane ◽

Hiromichi Ebisawa

Keyword(s):

Numerical Simulation ◽

Charge Density ◽

Landau Equation ◽

Charge Density Waves ◽

Time Dependent ◽

Density Waves ◽

Ginzburg Landau ◽

Ginzburg Landau Equation

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Numerical Simulation of Ship Collision and Validations With Experimental Results

10.1115/omae2021-63746 ◽

2021 ◽

Author(s):

Xiangbiao Wang ◽

Chun Bao Li ◽

Ling Zhu

Keyword(s):

Numerical Simulation ◽

Model Test ◽

Structural Damage ◽

Added Mass ◽

Ship Motion ◽

Time Dependent ◽

Structural Deformation ◽

Structure Interaction ◽

Ship Collision ◽

Good Agreement

Abstract Ship collision accidents occur from time to time in recent years, and this would cause serious consequences such as casualties, environmental pollution, loss of cargo on board, damage to the ship and its equipment, etc. Therefore, it is of great significance to study the response of ship motion and the mechanism of structural damage during the collision. In this paper, model experiments and numerical simulation are used to study the ship-ship collision. Firstly, the Coupled Eulerian-Lagrangian (CEL) was used to simulate the fluid-structure interaction for predicting structural deformation and ship motion during the normal ship-ship collision. Meanwhile, a series of model tests were carried out to validate the numerical results. The validation presented that the CEL simulation was in good agreement with the model test. However, the CEL simulation could not present the characteristics the time-dependent added mass.

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A One Dimensional, Time Dependent Inlet / Engine Numerical Simulation for Aircraft Propulsion Systems

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award ◽

10.1115/97-gt-333 ◽

1997 ◽

Cited By ~ 4

Author(s):

Doug Garrard ◽

Milt Davis ◽

Steve Wehofer ◽

Gary Cole

Keyword(s):

Numerical Simulation ◽

Gas Turbine ◽

High Frequency ◽

Gas Turbine Engine ◽

Simulation System ◽

Time Dependent ◽

Propulsion Systems ◽

Turbine Engine ◽

One Dimensional ◽

Supersonic Inlet

The NASA Lewis Research Center (LeRC) and the Arnold Engineering Development Center (AEDC) have developed a closely coupled computer simulation system that provides a one dimensional, high frequency inlet / engine numerical simulation for aircraft propulsion systems. The simulation system, operating under the LeRC-developed Application Portable Parallel Library (APPL), closely coupled a supersonic inlet with a gas turbine engine. The supersonic inlet was modeled using the Large Perturbation Inlet (LAPIN) computer code, and the gas turbine engine was modeled using the Aerodynamic Turbine Engine Code (ATEC). Both LAPIN and ATEC provide a one dimensional, compressible, time dependent flow solution by solving the one dimensional Euler equations for the conservation of mass, momentum, and energy. Source terms are used to model features such as bleed flows, turbomachinery component characteristics, and inlet subsonic spillage while unstarted. High frequency events, such as compressor surge and inlet unstart, can be simulated with a high degree of fidelity. The simulation system was exercised using a supersonic inlet with sixty percent of the supersonic area contraction occurring internally, and a GE J85-13 turbojet engine.

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Numerical Simulation of Droplet Ejection Based on VOF Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.1257 ◽

2014 ◽

Vol 548-549 ◽

pp. 1257-1264 ◽

Cited By ~ 1

Author(s):

Xiao Yong Suo

Keyword(s):

Numerical Simulation ◽

Surface Tension ◽

Numerical Model ◽

Physical Properties ◽

Vof Method ◽

Numerical Results ◽

Droplet Ejection ◽

Ejection Process ◽

Ink Jet ◽

Jet Nozzle

Taking ejection process of the ink droplets from ink-jet nozzle as the prototype, a similar numerical model of droplet ejection was established. The VOF method was applied to track the interface of droplet ejection process and it is shown that the numerical results simulated by the VOF method were accurate and reliable. Six kinds of liquid with different physical properties were chosen as the research object. The numerical results were analyzed and compared. Finally, the effect of the surface tension, viscosity and density on the droplet ejection process was discussed.

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