Parametric study of a VLS based on 2-D FSI analysis

Joo HyunShig; Cho Haeseong; Lee Younghun; Shin SangJoon; Yoh Jack J.; Shin Jae-Cheol

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Parametric study of a VLS based on 2-D FSI analysis

机译：基于二维FSI分析的VLS参数研究

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Vertical launching system (VLS) is useful in operating and sheltering high-speed rockets. The aft closure in the plenum plays a significant role in protecting the interiors from the exhaust gas induced by the ignition of adjacent or in-positioned canisters. During the aft opening/closing event, a complex flow is propagated into the VLS. By presence of such structural components, it is necessary to analyze the interaction between the deforming aft closure and a highly pressurized plume.This paper presents a two-dimensional fluid-structure interaction (FSI) simulation under high pressure loading condition for preliminary design of VLS. A quadrilateral 9-node element based on co-rotational (CR) framework is used to predict the geometrically/materially nonlinear deformation of the aft closure while supersonic impinging jet plume is predicted by fully Eulerian modeling. A contact mechanism is also utilized to apply reaction forces between the structures and inclined plenum using a penalty term. The interface and boundary conditions are obtained by the hybrid particle level-set method via the Ghost framework. Furthermore, a parametric study is conducted by changing the thickness of the aft closure and the inclined angle of the plenum. It is expected that the magnitudes of pressure and temperature can be decreased by the introduction of appropriate thickness of the aft closure and inclined angle in the plenum. (C) 2018 Elsevier Masson SAS. All rights reserved.

机译：垂直发射系统（VLS）可用于操作和掩蔽高速火箭。增压室中的后部封闭件在保护内部免受因相邻或就位的碳罐点火而产生的废气中起重要作用。在后部打开/关闭事件期间，复杂的流传播到VLS中。由于存在这样的结构成分，有必要分析变形后尾盖与高压羽流之间的相互作用。本文提出了在高压载荷条件下二维流体-结构相互作用（FSI）的模拟，用于VLS的初步设计。。基于同向旋转（CR）框架的四边形9节点元素用于预测后盖的几何/材料非线性变形，而通过完全欧拉建模预测超音速撞击射流。还使用接触机制利用惩罚项在结构和倾斜气室之间施加反作用力。界面和边界条件是通过Ghost框架通过混合粒子水平集方法获得的。此外，通过改变后盖的厚度和气室的倾斜角度进行参数研究。可以预期，通过在后通风室中引入适当的后盖厚度和倾斜角度，可以降低压力和温度的大小。（C）2018 Elsevier Masson SAS。版权所有。

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《Aerospace science and technology》 |2019年第1期|530-542|共13页
作者
Joo HyunShig; Cho Haeseong; Lee Younghun; Shin SangJoon; Yoh Jack J.; Shin Jae-Cheol;
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作者单位

Seoul Natl Univ, Dept Mech & Aerosp Engn, 1 Gwanak Ro, Seoul 151744, South Korea;

Seoul Natl Univ, Inst Adv Machines & Design, BK21 Plus Transformat Training Program Creat Mech, 1 Gwanak Ro, Seoul 151744, South Korea;

Seoul Natl Univ, Dept Mech & Aerosp Engn, 1 Gwanak Ro, Seoul 151744, South Korea;

Seoul Natl Univ, Inst Adv Aerosp Technol, Dept Mech & Aerosp Engn, 1 Gwanak Ro, Seoul 151744, South Korea;

Seoul Natl Univ, Inst Adv Aerosp Technol, Dept Mech & Aerosp Engn, 1 Gwanak Ro, Seoul 151744, South Korea;

Agcy Def Dev, Yuseong 305600, Daejeon, South Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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关键词
Vertical launching system; 2D fluid-structure interaction; Elastoplasticity; Contact analysis; Level-set method; Parametric study;

机译：垂直发射系统二维流固耦合弹塑性接触分析水平设定法参数研究;

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Parametric study of a VLS based on 2-D FSI analysis

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