Wang, Baotian, Shao, Jianli, Zhang, Guangcai, Li, Weidong, Zhang, Ping
Molecular dynamics simulations are performed to investigate the structural phase transition in body-centered cubic (bcc) single crystal iron under high strain rate loading. We study the nucleation...
Multiple-relaxation-time lattice Boltzmann model for compressible fluids (2009)
Chen, Feng, Xu, Aiguo, Zhang, Guangcai, Li, Yingjun
We present an energy-conserving multiple-relaxation-time finite difference lattice Boltzmann model for compressible flows. This model is based on a 16-discrete-velocity model. The collision step is...
Simulating liquid-vapor phase separation under shear with lattice Boltzmann method (2009)
Wang, Ce, Xu, Aiguo, Zhang, Guangcai, Li, Yingjun
We study liquid-vapor phase separation under shear via the Shan-Chen lattice Boltzmann model. Besides the rheological characteristics, we analyze the Kelvin-Helmholtz(K-H) instability resulting from...
Morphological characterization of shocked porous material (2009)
Xu, Aiguo, Zhang, Guangcai, Pan, X. F., Zhang, Ping, Zhu, Jianshi
Morphological measures are introduced to probe the complex procedure of shock wave reaction on porous material. They characterize the geometry and topology of the pixelized map of a state variable...
Simulation study of shock reaction on porous material (2009)
Xu, Aiguo, Zhang, Guangcai, Pan, X. F., Zhu, Jianshi
Direct modeling of porous materials under shock is a complex issue. We investigate such a system via the newly developed material-point method. The effects of shock strength and porosity size are the...
Two-Dimensional Lattice Boltzmann Model For Compressible Flows With High Mach Number (2008)
Gan, Yanbiao, Xu, Aiguo, Zhang, Guangcai, Yu, Xijun, Li, Yingjun
In this paper we present an improved lattice Boltzmann model for compressible Navier-Stokes system with high Mach number. The model is composed of three components: (i) the discrete-velocity-model by...
Pan, X. F., Xu, Aiguo, Zhang, Guangcai, Zhu, Jianshi
Criterion for contacting is critically important for the Generalized Interpolation Material Point(GIMP) method. We present an improved criterion by adding a switching function. With the method...
Three-dimensional multi-mesh material point method for solving collision problems (2007)
Pan, Xiaofei, Xu, Aiguo, Zhang, Guangcai, Zhu, Jianshi, Ma, Shang, Zhang, Xiong
Contact algorithm between different bodies plays an important role in solving collision problems. Usually it is not easy to be treated very well. Several ones for material point method were proposed...
Material-Point Simulation to Cavity Collapse Under Shock (2007)
Xu, Aiguo, Pan, X. F., Zhang, Guangcai, Zhu, Jianshi
The collapse of cavities under shock is a key problem in various fields ranging from erosion of material, ignition of explosive, to sonoluminescence, etc. We study such processes using the...
Lattice Boltzmann Approach to High-Speed Compressible Flows (2007)
Pan, X. F., Xu, Aiguo, Zhang, Guangcai, Jiang, Song
We present an improved lattice Boltzmann model for high-speed compressible flows. The model is composed of a discrete-velocity model by Kataoka and Tsutahara [Phys. Rev. E \textbf{69}, 056702 (2004)]...