Efficient simulation of thermally fluctuating biopolymers immersed in fluids on 1-micron, 1-second scales [0.03%]
在微米和秒的时间尺度上对热力学涨落的生物高分子进行高效模拟浸入流体中
Kai Liu,John Lowengrub,Jun Allard
Kai Liu
The combination of fluid-structure interactions with stochasticity, due to thermal fluctuations, remains a challenging problem in computational fluid dynamics. We develop an efficient scheme based on the stochastic immersed boundary method,...
Error scaling of large-eddy simulation in the outer region of wall-bounded turbulence [0.03%]
大壁面湍流外区的大涡模拟误差标度
Adrián Lozano-Durán,Hyunji Jane Bae
Adrián Lozano-Durán
We study the error scaling properties of large-eddy simulation (LES) in the outer region of wall-bounded turbulence at moderately high Reynolds numbers. In order to avoid the additional complexity of wall-modeling, we perform LES of turbule...
A robust and efficient iterative method for hyper-elastodynamics with nested block preconditioning [0.03%]
一种求解嵌套块预条件超弹动力学问题的鲁棒高效迭代方法
Ju Liu,Alison L Marsden
Ju Liu
We develop a robust and efficient iterative method for hyper-elastodynamics based on a novel continuum formulation recently developed in [1]. The numerical scheme is constructed based on the variational multiscale formulation and the genera...
An Immersed Boundary method with divergence-free velocity interpolation and force spreading [0.03%]
一种基于无散度插值和受力扩散的浸没边界法
Yuanxun Bao,Aleksandar Donev,Boyce E Griffith et al.
Yuanxun Bao et al.
The Immersed Boundary (IB) method is a mathematical framework for constructing robust numerical methods to study fluid-structure interaction in problems involving an elastic structure immersed in a viscous fluid. The IB formulation uses an ...
Two Relaxation Time Lattice Boltzmann Method Coupled to Fast Fourier Transform Poisson Solver: Application to Electroconvective Flow [0.03%]
带有快速傅里叶变换泊松方程求解器的双松弛时间晶格boltzmann法及其在电传导对流中的应用
Yifei Guan,Igor Novosselov
Yifei Guan
Electroconvective flow between two infinitely long parallel electrodes is investigated via a multiphysics computational model. The model solves for spatiotemporal flow properties using two-relaxation-time Lattice Boltzmann Method for fluid ...
Alexander Holiday,Mahdi Kooshkbaghi,Juan M Bello-Rivas et al.
Alexander Holiday et al.
Large scale dynamical systems (e.g. many nonlinear coupled differential equations) can often be summarized in terms of only a few state variables (a few equations), a trait that reduces complexity and facilitates exploration of behavioral a...
A hybrid smoothed dissipative particle dynamics (SDPD) spatial stochastic simulation algorithm (sSSA) for advection-diffusion-reaction problems [0.03%]
一种求解_advective-diffusive-reactive_问题的混合耗散粒子动力学-空间随机模拟算法
Drawert Brian,Jacob Bruno,Li Zhen et al.
Drawert Brian et al.
We have developed a new algorithm which merges discrete stochastic simulation, using the spatial stochastic simulation algorithm (sSSA), with the particle based fluid dynamics simulation framework of smoothed dissipative particle dynamics (...
Hyperviscosity-Based Stabilization for Radial Basis Function-Finite Difference (RBF-FD) Discretizations of Advection-Diffusion Equations [0.03%]
基于高粘性的稳定化方法在径向基函数-有限差分(RBF-FD)离散化中的应用：对传热和扩散方程的影响
Varun Shankar,Aaron L Fogelson
Varun Shankar
We present a novel hyperviscosity formulation for stabilizing RBF-FD discretizations of the advectiondiffusion equation. The amount of hyperviscosity is determined quasi-analytically for commonly-used explicit, implicit, and implicit-explic...
Kazuki Maeda,Tim Colonius
Kazuki Maeda
We present a coupled Eulerian-Lagrangian method to simulate cloud cavitation in a compressible liquid. The method is designed to capture the strong, volumetric oscillations of each bubble and the bubble-scattered acoustics. The dynamics of ...
Mixed analytical-stochastic simulation method for the recovery of a Brownian gradient source from probability fluxes to small windows [0.03%]
一种混合分析-随机模拟方法，用于从小窗口的概率通量恢复布朗扩散场的源项位置与强度分布参数
U Dobramysl,D Holcman
U Dobramysl
Is it possible to recover the position of a source from the steady-state fluxes of Brownian particles to small absorbing windows located on the boundary of a domain? To address this question, we develop a numerical procedure to avoid tracki...