海水流中溢油扩散的多相光滑粒子流体动力学模拟  

A multi-phase SPH simulation of oil spill diffusion in seawater currents

作　　者：Diana De Padova Michele Mossa Stefano Sibilla 

机构地区：[1]Polytechnic University of Bari,DICATECh,Bari,Italy [2]University of Pavia,DICAr,Pavia,Italy

出　　处：《Acta Mechanica Sinica》2023年第2期49-60,共12页力学学报（英文版）

摘　　要：在灾害造成石油泄漏的情况下,引发的主要环境问题之一是石油的轨迹及其空间分布.本文通过二维光滑粒子流体力学(SPH)多相模拟方法研究海底溢油情形,可以更好地了解原油在水中的扩散过程.重点研究了射流在静水中或横向进入不同流速的流动流中诱导流动的主要特征,此外,还研究了原油泄漏速率的影响.通过与实验数据的对比,验证了SPH数值模型的有效性,分析了主要物理参数对流动的影响.模拟结果表明,流速是影响溢油运移流量的关键因素.In case of oil spills due to disasters,one of the main environmental concerns is the oil trajectory and,consequently,its spatial distribution.In the present study,two-dimensional(2D)smoothed particle hydrodynamics(SPH)multi-phase simulations of submarine oil spills give a better insight into the process of oil diffusion in water.The study focuses on the main characteristics of the flow induced by jets discharged either in still water or transversally into flowing currents characterized by different current velocities.Furthermore,the influence of the oil leaking rate is studied.After validation of the SPH numerical model through the comparison with experimental data,an analysis of the effects of the main physical parameters of the flow is performed.The simulation results indicate that the current velocity is the flow quantity that most influences the migration of the oil spilling.

关 键 词：Smoothed particle hydrodynamics models Oil spill diffusion Seawater currents 

分 类 号：O35[理学—流体力学]