基于長程力的SPH方法固壁邊界處理
發(fā)布時間:2018-08-01 08:10
【摘要】:將近場動力學(PD)中的長程力引入光滑粒子流體動力學(SPH)的固壁邊界處理模型中,給出一種適合SPH方法邊界處理的新方法。通過液柱坍塌、Poiseuille流、水鑄造充型仿真和土體崩塌4個算例對該方法的有效性進行驗證。結果表明:該方法能很好地解決粒子非物理穿透邊界;能客觀反映真實的邊界作用;對于復雜幾何邊界和具有材料強度的動力學問題也相當有效。
[Abstract]:The long term force in near-field dynamics (PD) is introduced into the solid wall boundary treatment model of smooth particle hydrodynamic (SPH), and a new method suitable for SPH boundary treatment is presented. The effectiveness of the method is verified by four examples of liquid column collapse Poiseuille flow, water casting mold filling simulation and soil collapse. The results show that this method can solve the nonphysical boundary of particles well, can objectively reflect the real boundary action, and is also effective for complex geometric boundaries and dynamic problems with material strength.
【作者單位】: 河海大學力學與材料學院;黃岡師范學院數(shù)理學院;
【基金】:國家自然科學基金(11172088) 江蘇省普通高校研究生科研創(chuàng)新計劃項目(KYZZ16_0268) 黃岡師范學院高級別培育項目(201617603)
【分類號】:O35
本文編號:2156879
[Abstract]:The long term force in near-field dynamics (PD) is introduced into the solid wall boundary treatment model of smooth particle hydrodynamic (SPH), and a new method suitable for SPH boundary treatment is presented. The effectiveness of the method is verified by four examples of liquid column collapse Poiseuille flow, water casting mold filling simulation and soil collapse. The results show that this method can solve the nonphysical boundary of particles well, can objectively reflect the real boundary action, and is also effective for complex geometric boundaries and dynamic problems with material strength.
【作者單位】: 河海大學力學與材料學院;黃岡師范學院數(shù)理學院;
【基金】:國家自然科學基金(11172088) 江蘇省普通高校研究生科研創(chuàng)新計劃項目(KYZZ16_0268) 黃岡師范學院高級別培育項目(201617603)
【分類號】:O35
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1 廖益;;非粒子交換導致的長程作用力[J];物理;2008年05期
2 喻傅贊;宇宙中無限大的天體和無限小的基本粒子之間的聯(lián)系[J];西南師范學院學報(自然科學版);1984年02期
3 ;[J];;年期
,本文編號:2156879
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