搜索结果: 1-15 共查到“Lattice Boltzmann”相关记录21条 . 查询时间(0.078 秒)
Calculating the effective permeability of sandstone with multiscale lattice Boltzmann/finite element simulations
Finite elements Lattice Boltzmann Multiscale simulation Porous media Synchrotron microtomography Upscaling
2015/7/1
The lattice Boltzmann (LB) method is an efficient technique for simulating fluid flow through individual pores of complex porous media. The ease with which the LB method handles complex boundary condi...
岩体开采变形对流体渗流性质的影响是煤瓦斯共采、油气资源开发、CO2地质封存及地下水资源保护等关注的重要问题. 本文基于砂岩孔隙结构CT图像，发展了一种孔隙岩石CH4微细观渗流的LBM模拟方法及适合于大尺度孔隙模型的并行算法，运用此方法模拟分析了孔隙砂岩CH4微细观渗流性质及孔隙结构特征的影响，并与实验结果进行对比，验证了LBM方法的可靠性. 利用LBM+FEM方法分析了应力作用下孔隙结构变形对CH...
研究微纳尺度的汽泡动力学行为是微纳流动与传热的基础前沿。基于作者提出的能描述相变之热质传递的lattice Boltzmann 大密度比多相流复合模型,该文数值研究了单微通道中汽泡在人工空穴上核化跃离的物理过程,量化分析了汽泡核化、跃离和运动对微通道内液相流动和传热的影响,可为理论探索人工空穴强化微通道传热提供有意义的参考。 |
Viscous coalescence of droplets -- a Lattice Boltzmann study
Viscous coalescence of droplets Lattice Boltzmann study Fluid Dynamics
2012/5/29
The coalescence of two resting liquid droplets in a saturated vapor phase is investigated by Lattice Boltzmann simulations in two and three dimensions. We find that, in the viscous regime, the bridge ...
Numerical Study of the Properties of the Central Moment Lattice Boltzmann Method
Numerical Study Properties the Central Moment Lattice Boltzmann Method
2012/2/29
Central moment lattice Boltzmann method (LBM) is one of the more recent developments among the lattice kinetic schemes for computational fluid dynamics. A key element in this approach is the use of ce...
Incorporating Forcing Terms in Cascaded Lattice-Boltzmann Approach by Method of Central Moments
Incorporating Forcing Terms Cascaded Lattice-Boltzmann Approach Central Moments
2012/2/29
Cascaded lattice-Boltzmann method (Cascaded-LBM) employs a new class of collision operators aiming to improve numerical stability. It achieves this and distinguishes from other collision operators, su...
A fully relativistic lattice Boltzmann algorithm
Relativistic fluid dynamics Quark-gluon plasmas Lattice Boltzmann
2011/7/20
Starting from the Maxwell-Juettner equilibrium distribution, we develop a relativistic lattice Boltzmann (LB) algorithm capable of handling ultrarelativistic systems with flat, but expanding, spacetim...
Prandtl number effects in MRT Lattice Boltzmann models for shocked and unshocked compressible fluids
lattice Boltzmann method compressible flows multiple-relaxation-time Prandtl number shock wave reaction
2011/7/7
For compressible fluids under shock wave reaction, we have proposed two Multiple-Relaxation-Time (MRT) Lattice Boltzmann (LB) models [F. Chen, et al, EPL \textbf{90} (2010) 54003; Phys. Lett. A \text...
Prandtl number effects in MRT Lattice Boltzmann models for shocked and unshocked compressible fluids
lattice Boltzmann method compressible flows multiple-relaxation-time Prandtl number shock wave reaction
2011/9/9
For compressible fluids under shock wave reaction, we have proposed two Multiple-Relaxation-Time (MRT) Lattice Boltzmann (LB) models [F. Chen, et al, EPL 90 (2010) 54003; Phys. Lett. A 375 (2011) 2129...
Stable lattice Boltzmann scheme for a moving Burgers shock wave
Hyperbolic conservation laws entropy convex hull
2011/1/20
We follow the mathematical framework proposed by Bouchut [3] in order to derive equilibrium functions for D1Q3 lattice Boltzmann simulations of the Burgers equation. When a particular convexity proper...
Three-Dimensional Lattice Boltzmann Model for High-Speed Compressible Flows
Statistical Mechanics (cond-mat.stat-mech) Soft Condensed Matter (cond-mat.soft) Cellular Automata and Lattice Gases (nlin.CG) Computational Physics (physics.comp-ph) Plasma Physics (physics.plasm-ph)
2010/11/10
A highly efficient three-dimensional (3D) Lattice Boltzmann (LB) model for high speed compressible flows is proposed. This model is developed from the original one by Kataoka and Tsutahara[Phys. Rev. ...
Lattice Boltzmann study on Kelvin-Helmholtz instability: the roles of velocity and density gradients
Soft Condensed Matter (cond-mat.soft) Cellular Automata and Lattice Gases (nlin.CG) Computational Physics (physics.comp-ph) Plasma Physics (physics.plasm-ph)
2010/11/10
A two-dimensional lattice Boltzmann model with 19 discrete velocities for compressible Euler equations is proposed (D2V19-LBM). The fifth-order Weighted Essentially Non-Oscillatory (5th-WENO) finite d...
采用高频电控热激发汽泡的方式构造微通道人工泡状流,可以有效抑制微通道沸腾流动的不稳定性和强化传热。本文基于Lattice Boltzmann大密度比多相流复合模型,数值研究了通道内人工泡状流的流动和传热,通过比较分析不同发泡频率的泡状流,量化分析了汽泡运动和增长对微通道流动与传热的相互影响。一方面着重分析了汽泡运动对微通道运动边界层以及汽泡相变增长对热边界层的影响,另一方面也研究了边界层对汽泡动力...
A LATTICE BOLTZMANN COUPLED TO FINITE VOLUMES METHOD FOR SOLVING PHASE CHANGE PROBLEMS
lattice Boltzmann computational fluid dynamics phase-change
2009/10/14
A numerical scheme coupling lattice Boltzmann and finite volumes approaches has been developed and qualified for test cases of phase change problems. In this work, the coupled partial differential equ...
Simulations of time harmonic blood flow in the Mesenteric artery: comparing finite element and lattice Boltzmann methods
the Mesenteric artery finite element lattice Boltzmann methods
2010/2/25
Background
Systolic blood flow has been simulated in the abdominal aorta and the superior mesenteric artery. The simulations were carried out using two different computational hemodynamic methods: th...