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Application of Compressible Multi-component Flow in Underwater Explosion Problems

Yu Jun, Pan Jian-qiang, Wang Hai-kun, Mao Hai-bin
2015 Procedia Engineering  
At last we attempted to use the method to simulate shock wave loading and underwater explosion (UNDEX) near a free surface  ...  High-order accurate shock-capturing schemes had been proposed to resolve compressible flow movement that involving shockwave problem in single-fluid Riemann problems previously.  ...  Introduction High-order accurate shock-capturing schemes have been widely used in computational fluid dynamics to resolve compressible flow features.  ... 
doi:10.1016/j.proeng.2015.11.203 fatcat:sxyzzrbd4navxndoxsqemhlsxm

A virtual test facility for simulating the dynamic response of materials

M. Aivazis, W.A. Goddard, D. Meiron, M. Ortiz, J. Pool, J. Shepherd
2000 Computing in science & engineering (Print)  
, tensional, and shear loadings, including loadings generated by high explosives.  ...  is to construct a Virtual Test Facility-a problem-solving environment for full 3D parallel simulation of the dynamic response of materials undergoing compression due to shock waves.  ...  The computational fluid dynamics (CFD) engine simulates phenomena of compressible fluid mechanics, such as high-explosive detonation, and simulates compressible turbulent mixing.  ... 
doi:10.1109/5992.825748 fatcat:2hbvedqvbvesvlf3tvztog6e6u

Study on Dynamic Numerical Simulation of String Damage Rules in Oil-gas Well Perforating Job

KANG Kai, MA Feng, ZHOU Haifeng, WANG Haiyan, WANG Shushan
2014 Procedia Engineering  
The technologies of high charge perforator and high density perforator are widely used in domestic and international oil-gas wells perforating job, which leads to the increase of the explosion load intensity  ...  The software of LS-DYNA was used to measure the dynamic response of the perforating gun under four types of perforation conditions.  ...  The fluid material includes explosive, liner and air in this simulation model. By using the keyword *CONTACT_ERODING_SURFACE_TO_SURFACE, we can define the erosive face to face contact algorithm.  ... 
doi:10.1016/j.proeng.2014.10.513 fatcat:rpws3lbeb5antifxrsy2nrdxsa

Animating explosions

Gary D. Yngve, James F. O'Brien, Jessica K. Hodgins
2000 Proceedings of the 27th annual conference on Computer graphics and interactive techniques - SIGGRAPH '00  
We simulate the propagation of an explosion through the surrounding air using a computational fluid dynamics model based on the equations for compressible, viscous flow.  ...  Using this technique, we can generate a variety of effects including shaped explosive charges, a projectile propelled from a chamber by an explosion, and objects damaged by a blast.  ...  An advantage of using a full volumetric fluid representation for explosions is that the simulation can be used to model a fireball in addition to the blast wave.  ... 
doi:10.1145/344779.344801 dblp:conf/siggraph/YngveOH00 fatcat:purzm4k3m5eqlijlzzchmt7quq

Structural response of laminated composite plates to blast load

F. Dolce, M. Meo, A. Wright, M. French, M. Bernabei
2010 Plastics, Rubber and Composites: Macromolecular Engineering  
The blast load was simulated using a Multi Materials Arbitrary Lagrangian Eulerian (MMALE) approach, with Fluid-Structure Interaction (FSI) between the Eulerian blast and Lagrangian target models.  ...  The paper deals with 3D Finite Element (FEM) simulations of fully clamped rectangular Carbon Fibre Reinforced Plastics (CFRP) composite plates subjected to blast loads generated by C4 explosive charges  ...  In 2001 Wang [16] presented a benchmark work of simulation of explosion in soil and air using LS-DYNA commercial code and Eulerian formulation.  ... 
doi:10.1179/174328910x12608851832858 fatcat:l7mct5svcfe67fgqh6ijv736ji

Lattice Boltzmann modeling to explain volcano acoustic source

Federico Brogi, Maurizio Ripepe, Costanza Bonadonna
2018 Scientific Reports  
We have used Lattice-Boltzmann modeling of the eruptive fluid dynamics to analyse the acoustic wavefield produced by different flow regimes.  ...  Acoustic pressure is largely used to monitor explosive activity at volcanoes and has become one of the most promising technique to monitor volcanoes also at large scale.  ...  Malaspinas for insightful discussions on the numerical simulations performed with the Lattice Boltzmann method.  ... 
doi:10.1038/s41598-018-27387-0 pmid:29934608 pmcid:PMC6015044 fatcat:7tmcso523vefxiqcerwp55glem

The Numerical Simulation of the Shock Wave of Coal Gas Explosions in Gas Pipe*

Zhenxing Chen, Kepeng Hou, Longwei Chen
2018 IOP Conference Series: Earth and Environment  
Based on explosion and three-dimension fluid dynamics theory, using unsteady, compressible, inviscid hydrodynamic equations and state equations, this paper considers pressure gradient's effects to velocity  ...  Numerical simulation of the impact of highspeed metallic plates using two approaches S V Fortova, P S Utkin, T S Narkunas et al.  ...  In 2001, based on the finite difference method, Yuling Shen and others used fluid in cell method to make numerical simulation of gas explosion in 2D visualization software, and analyzed the numerical simulation  ... 
doi:10.1088/1755-1315/128/1/012115 fatcat:cmefuh2ptfgsdgvjbwehotg3ve

Practical Animation of Compressible Flow for ShockWaves and Related Phenomena [article]

Nipun Kwatra, Jon T. Gretarsson, Ronald Fedkiw
2010 Proceedings of the 2004 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '04  
interest, and allows the use of state-of-the-art smoke simulation techniques.  ...  Previous methods either simplify away the compressible component of the flow and are unable to capture shock fronts or use a prohibitively expensive explicit method that limits the time step of the simulation  ...  A few papers have simulated phenomena related to the explosion itself.  ... 
doi:10.2312/sca/sca10/207-215 fatcat:rucuqqeelzc5nkwasblbird6bu

Evaluation of Pressure Distribution in Buried Pipes with Liquid in the Explosion

M. Parviz, B. Aminnejad, A.R. Fiouz
2019 Archives of Civil Engineering  
The arbitrary Lagrangian-Eulerian (ALE) method was employed using LS-DYNA software.  ...  Therefore, all figures in this study illustrate that fluid pressure levels in buried pipes can help in their stabilization.  ...  simple and useful "soil and foam" model raised by Krieg in 1972, which could be operated as a fluid in some way.  ... 
doi:10.2478/ace-2019-0030 fatcat:wvxfyfhvljabvknnbkppbnnr4y

Simulating Gaseous Fluids with Low and High Speeds

Yue Gao, Chen-Feng Li, Shi-Min Hu, Brian A. Barsky
2009 Computer graphics forum (Print)  
Gaseous fluids may move slowly, as smoke does, or at high speed, such as occurs with explosions.  ...  We model the low speed gaseous fluids by a grid approach and use a particle approach for the high speed gaseous fluids.  ...  Incompressibility is feasible for low speed gaseous fluid simulations, but not for high speed. Compressible fluid models have been exploited to simulate explosions. Yngve et al.  ... 
doi:10.1111/j.1467-8659.2009.01562.x fatcat:petpxpcoqbeojbljp5rc4qiyxa

Expansion shock waves in the implosion process from a time-reversible molecular-dynamics simulation of a dual explosion process

Nobuyoshi Komatsu, Takashi Abe
2007 Physics of Fluids  
Here we show that, through a dual implosion simulation ͑i.e., a time-reversible simulation of the explosion͒, a kind of expansion shock wave is successfully formed in the Bit MD simulation.  ...  In order to resolve the question from a microscopic viewpoint, an implosion process dual to an explosion process was investigated by means of the molecular-dynamics method ͑MD͒.  ...  Fluids 19, 056103 ͑2007͒ We have confirmed that the explosion simulation generates a discontinuous surface corresponding to a kind of compression shock wave, as has been described in previous works.  ... 
doi:10.1063/1.2717725 fatcat:mmplrodhkrhxldgowo2qprlpoy

Shock Induced Symmetric Compression in a Spherical Target

Labakanta Mandal, Sourav Roy, Manoranjan Khan, R. Roychoudhury
2015 Journal of Modern Physics  
However, temperature will change rapidly due to change of inner density and so would be the pressure of compressible fluid following adiabatic law.  ...  However, after implosion the plasma tries to expand in blow off/explosion situation and as a result the interfacial radius will increase.  ...  This study can explain the underwater explosion [1] or find out the time taken in filling up the cavity suddenly formed inside an incompressible fluid [2] .  ... 
doi:10.4236/jmp.2015.613178 fatcat:xcvhof7zbzgmxgkzpjpr3piafi

Animating suspended particle explosions

Bryan E. Feldman, James F. O'Brien, Okan Arikan
2003 ACM Transactions on Graphics  
Combustion is modeled using a simple but effective process governed by the particle and fluid systems. The method has enough flexibility to also approximate sprays of burning liquids.  ...  Rather than modeling the numerically troublesome, and largely invisible blast wave, the method uses a relatively stable incompressible fluid model to account for the motion of air and hot gases.  ...  Instead of using an illconditioned compressible fluid simulation, the method presented here uses an incompressible fluid simulation and generates the expansive flow caused by the explosion with constraints  ... 
doi:10.1145/882262.882336 fatcat:5wn7bua4rfb63bhime7crk65ma

From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae [article]

A. Nonaka, A. S. Almgren, J. B. Bell, H. Ma, S. E. Woosley, M. Zingale
2011 arXiv   pre-print
We also demonstrate our ability to initialize a compressible simulation of the explosion phase in CASTRO using data obtained directly from MAESTRO just before ignition.  ...  We compute the convective phase up to the time of ignition using our low Mach number code, MAESTRO, and the subsequent explosion phase using our compressible code, CASTRO.  ...  Acknowledgements We would like to thank Gunther Weber and Hank Childs of LBNL for their help in using the VisIt visualization software.  ... 
arXiv:1111.2959v1 fatcat:swokydonrbctbnl3u2yfa67yxu

Study on Load Characteristics of Underwater Explosion Using RKDG-LS-DGF and BEM

Longkan Wang, Hailong Chen, Xi Ye, Xiongliang Yao
2015 Shock and Vibration  
RKDG-LS-DGF method is used to simulate the physical process from the detonation of a column charge at one end to the formation of a nonspherical initial bubble and the process of bubble jet.  ...  Ghost Fluid method (RKDG-LS-DGF) and boundary element method (BEM).  ...  [21] [22] [23] used the RKDG finite element method in the simulation of 2D compressible multiphase flow and cavitation problems.  ... 
doi:10.1155/2015/165252 fatcat:b3eo7tvkqzgi7hkqppozcrxaue
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