Papers – Page 16 – TechConnect Briefs

Numerical and Analytical Studies of Electrothermally Induced Flow And Its Application For Mixing and Cleaning in Microfluidic Systems

Feng J.J., Krishnamoorthy S., Sandaram S., CFD Research Corporation, US

This paper presents both analytic and simulation results of electrothermal flow in microfluidic systems. It also considers the application of this phenomenon to microscale mixing and cleaning. The basic operation requires application of an alternating [...]

A pFFT Accelerated Linear Strength BEM Potential Solver

Willis D.J., White J.K., Peraire J., Massachusetts Institute of Technology, US

A linear strength, Galerkin Boundary Element Meth- od (BEM) for the solution of the three dimensional, direct potential boundary integral equation is presented. The method incorporates node based linear shape functions of the single and [...]

Full-Lagrangian Based Newton Scheme for Dynamic Analysis of Electrostatic MEMS

De S.K., Aluru N.R., Beckman Institute for Advanced Science and Technoloy, US

A novel physical level simulation method for the dynamic analysis of MEMS based on a full Lagrangian description of both the mechanical and electrical domains and a Newton scheme to obtain a self-consistent solution at [...]

A Novel Approach for Volume-Integral Evaluation in the BEM

Ding J., Ye W., Georgia Institute of Technology, US

The need for efficient solutions to problems with complex 3-D geometries, such as those encountered in micro-electro-mechanical systems (MEMS), has led to the development of fast algorithms. Based on the accelerated Boundary Element Method (BEM), [...]

Perturbation Analysis of TBR Model Reduction in Application to Trajectory-Piecewise Linear Algorithm for MEMS Structures

Vasilyev D., Rewienski M., White J.K., Massachusetts Institute of Technology, US

MEMS devices generate challenging test cases for nonlinear model order reduction methods, due to their strongly nonlinear behavior. One of the model order reduction methods which can handle this nonlinear behavior is a Trajectory-Piecewise linear [...]

Error Estimation for Arnoldi-based Model Order REduction of MEMS

Bechtold T., Rudnyi E.B., Korvink J.G., University of Freiburg, Germany, DE

In this paper we present a heuristic error estimation for the Pade-type approximation of transfer function via Arnoldi algorithm. We suggest using the solution of the Lyapunov equations for reduced-order systems as a stop-criterion in [...]

Fast BEM Solution for Coupled 3D Electrostatic and Linear Elastic Problems

Masters N.D., Ye W., Georgia Institute of Technology, US

This paper presents the development of a precorrected-FFT 3D BEM solver for linear elastic problems. This can be used with existing fast BEM solvers for electrostatics and Stokes flow to efficiently solve coupled problems, as [...]

Multiscale Simulation of Flow-Induced Texture Formation in Thermotropic Liquid Crystals

Grecov D., Rey A.D., McGill University, CA

This paper presents theory and simulation of flow-induced structures, useful to the creation of synthetic material structures and to the biomimetics of natural fibers. We present a multiscale theory and simulation of hydrodynamic texture formation [...]

Effective Elastic Moduli of Nanocomposites with Prescribed Random Orientation of Nanofibers

Buryachenko V.A., Roy A., University of Dayton Research Institute, US

Experimental research and molecular dynamic simulation proved that nanofibers can be effectively considered in the framework of continuum mechanics as the homogeneous prolate spheroidal homogeneous inclusions with a large aspect ratio. Nanocomposite is modeled as [...]

REMD toolkit : A Composable Software to Generate Parallelized Simulation Programs

Ito M., Nagashima U., AIST, JP

We developed a toolkit to generate a replica exchange method program which is suitable to solve the multiple-minima problem that prevents the accurate estimation of thermodynamical quantities. The toolkit was designed as a set of [...]