A comparison of smoothed particle hydrodynamics simulation with exact results from a nonlinear water wave model

IF 0.7 Q4 ENGINEERING, OCEAN Ocean Systems Engineering-An International Journal Pub Date : 2021-06-01 DOI:10.12989/OSE.2021.11.2.185

H. X. Nguyen, V. Dinh, B. Basu

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引用次数: 1

Abstract

The aim of this paper is to verify the velocity profile and the pressure variation inside the fluid domain over one wavelength obtained from a numerically simulated Smoothed Particle Hydrodynamics model with some exact qualitative results (i.e., increasing/decreasing trend or constant value of a flow field) from a fully nonlinear Euler equation for water wave model. A numerical wave flume has been modeled and a regular wave train is created by the horizontal displacement of a wave paddle on one side of the flume. A passive beach is used to dissipate the energy of the wave on the other side. The extracted numerical results are compared with some recently available exact results from a nonlinear steady water wave model based on the Euler equations for irrotational flow. The flow properties under wave crests, wave troughs, and along the distance from the wave crest to the wave trough over one wavelength are investigated. The horizontal and vertical velocity components and the pressure in the fluid domain agree well with the analytical results.

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光滑颗粒流体力学模拟与非线性水波模型精确结果的比较

本文的目的是验证从数值模拟的光滑粒子流体动力学模型中获得的一个波长上流体域内的速度分布和压力变化，以及从水波模型的完全非线性欧拉方程中获得的一些精确的定性结果（即流场的增加/减小趋势或常数值）。建立了波浪水槽的数值模型，通过水槽一侧波浪桨的水平位移产生了规则的波浪列。被动海滩用于消散另一侧波浪的能量。将提取的数值结果与基于无旋流欧拉方程的非线性定常水波模型最近获得的一些精确结果进行了比较。研究了在一个波长上波峰、波谷下以及从波峰到波谷的距离上的流动特性。流体域中的水平和垂直速度分量以及压力与分析结果非常一致。

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来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.