Immersed-Boundary Methods for Simulating Human Motion Events

2020 ◽  
pp. 395-419
Author(s):  
Jung-Il Choi ◽  
Jack R. Edwards
Keyword(s):  
Human Motion ◽  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Motion Events ◽  
Boundary Methods

Microstructure simulation of early paper forming using immersed boundary methods

TAPPI Journal ◽  
2011 ◽  
Vol 11 (11) ◽  
pp. 23-30 ◽  
Author(s):  
ANDREAS MARK ◽  
ERIK SVENNING ◽  
ROBERT RUNDQVIST ◽  
FREDRIK EDELVIK ◽  
ERIK GLATT ◽  
...  
Keyword(s):  
Early Paper ◽  
Contact Model ◽  
Fiber Suspension ◽  
Beam Equation ◽  
Immersed Boundary ◽  
Paper Machine ◽  
Immersed Boundary Methods ◽  
Element Discretization ◽  
Microstructure Simulation ◽  
Boundary Methods

Paper forming is the first step in the paper machine where a fiber suspension leaves the headbox and flows through a forming fabric. Complex physical phenomena occur as the paper forms, during which fibers, fillers, fines, and chemicals added to the suspension interact. Understanding this process is important for the development of improved paper products because the configuration of the fibers during this step greatly influences the final paper quality. Because the effective paper properties depend on the microstructure of the fiber web, a continuum model is inadequate to explain the process and the properties of each fiber need to be accounted for in simulations. This study describes a new framework for microstructure simulation of early paper forming. The simulation framework includes a Navier-Stokes solver and immersed boundary methods to resolve the flow around the fibers. The fibers were modeled with a finite element discretization of the Euler-Bernoulli beam equation in a co-rotational formulation. The contact model is based on a penalty method and includes friction and elastic and inelastic collisions. We validated the fiber model and the contact model against demanding test cases from the literature, with excellent results. The fluid-structure interaction in the model was examined by simulating an elastic beam oscillating in a cross flow. We also simulated early paper formation to demonstrate the potential of the proposed framework.

Volume preserving immersed boundary methods for two-phase fluid flows

2011 ◽  
Vol 69 (4) ◽  
pp. 842-858 ◽  
Author(s):  
Yibao Li ◽  
Eunok Jung ◽  
Wanho Lee ◽  
Hyun Geun Lee ◽  
Junseok Kim
Keyword(s):  
Fluid Flows ◽  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Two Phase ◽  
Boundary Methods ◽  
Phase Fluid ◽  
Volume Preserving

Hybrid immersed interface-immersed boundary methods for AC dielectrophoresis

2014 ◽  
Vol 270 ◽  
pp. 640-659 ◽  
Author(s):  
Mohammad Robiul Hossan ◽  
Robert Dillon ◽  
Prashanta Dutta
Keyword(s):  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Immersed Interface ◽  
Boundary Methods

scholarly journals A Numerical Scheme Based on an Immersed Boundary Method for Compressible Turbulent Flows with Shocks: Application to Two-Dimensional Flows around Cylinders

2014 ◽  
Vol 2014 ◽  
pp. 1-21 ◽  
Author(s):  
Shun Takahashi ◽  
Taku Nonomura ◽  
Kota Fukuda
Keyword(s):  
Turbulent Flows ◽  
Aerodynamic Force ◽  
Flow Region ◽  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Two Dimensional ◽  
Symmetric Form ◽  
Present Scheme ◽  
Shock Region ◽  
Boundary Methods

A computational code adopting immersed boundary methods for compressible gas-particle multiphase turbulent flows is developed and validated through two-dimensional numerical experiments. The turbulent flow region is modeled by a second-order pseudo skew-symmetric form with minimum dissipation, while the monotone upstream-centered scheme for conservation laws (MUSCL) scheme is employed in the shock region. The present scheme is applied to the flow around a two-dimensional cylinder under various freestream Mach numbers. Compared with the original MUSCL scheme, the minimum dissipation enabled by the pseudo skew-symmetric form significantly improves the resolution of the vortex generated in the wake while retaining the shock capturing ability. In addition, the resulting aerodynamic force is significantly improved. Also, the present scheme is successfully applied to moving two-cylinder problems.

Continuity constrained least-squares interpolation for SFO suppression in immersed boundary methods

2017 ◽  
Vol 336 ◽  
pp. 608-626 ◽  
Author(s):  
Diogo M.C. Martins ◽  
Duarte M.S. Albuquerque ◽  
José C.F. Pereira
Keyword(s):  
Least Squares ◽  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Constrained Least Squares ◽  
Boundary Methods

DDES Analysis of 30P30N using Immersed Boundary Methods with Wall-Function

2016 ◽  
Vol 2016.29 (0) ◽  
pp. 4_288
Author(s):  
Yoshiharu Tamaki ◽  
Motoshi Harada ◽  
Taro Imamura
Keyword(s):  
Immersed Boundary ◽  
Immersed Boundary Methods ◽  
Wall Function ◽  
Boundary Methods
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