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光滑粒子流体动力学研究圆柱腔的坍塌。

A smoothed particle hydrodynamics study of the collapse for a cylindrical cavity.

机构信息

School of Chemical Engineering, University of Birmingham, Birmingham, United Kingdom.

出版信息

PLoS One. 2020 Sep 29;15(9):e0239830. doi: 10.1371/journal.pone.0239830. eCollection 2020.

DOI:10.1371/journal.pone.0239830
PMID:32991631
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7523992/
Abstract

In this study, we propose a mesh-free (particle-based) Smoothed Particle Hydrodynamics model for simulating a Rayleigh collapse. Both empty and gas cavities are investigates and the role of heat diffusion is also accounted for. The system behaves very differently according to the ratio between the characteristic time of collapse and the characteristic time of thermal diffusion. This study identifies five different possible behaviours that range from isothermal to adiabatic.

摘要

在这项研究中，我们提出了一种无网格（基于粒子的）光滑粒子流体动力学模型，用于模拟瑞利崩溃。研究了空腔和气体腔，并考虑了热扩散的作用。根据崩溃的特征时间与热扩散的特征时间之比，系统的行为会有很大的不同。本研究确定了五种不同的可能行为，从等温到绝热。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/75797a62fa74/pone.0239830.g015.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/130469e0e8dd/pone.0239830.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/0927d57e69fe/pone.0239830.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/0a0dbe5fc868/pone.0239830.g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/dd4c841a4e1d/pone.0239830.g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/c127a2245c1c/pone.0239830.g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/521413b4d9d3/pone.0239830.g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bac6/7523992/75797a62fa74/pone.0239830.g015.jpg

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