boundary element method – TechConnect Briefs

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 [...]

Biomolecule Electrostatic Optimization with an Implicit Hessian

Bardhan J.P., Lee J-H., Altman M.D., Leyffer S., Benson S., Tidor B., White J.K., Massachusetts Institute of Technology, US

Computational rational drug design is the application of computer simulation techniques to improve screening processes for new drugs or to design them de novo. The goal is to identify molecules that have high affinity and [...]

Air Damping in an Ultra-High-Frequency Disk Resonator

Yap L.K., Yap L.Y., Yap L.K., Yap L.Y., Ye W., Georgia Institute of Technology, US

In this paper we investigate the air damping in a circular disk radially oscillating at 1GHz. First the compressibility effects of air between the disk and the substrate are studied. The pressure perturbation along the [...]

Air Damping in an Ultra-High-Frequency Disk Resonator

Yap L.K., Yap L.Y., Yap L.K., Yap L.Y., Ye W., Georgia Institute of Technology, US

In this paper we investigate the air damping in a circular disk radially oscillating at 1GHz. First the compressibility effects of air between the disk and the substrate are studied. The pressure perturbation along the [...]

Efficiency Improvements in Fast Stokes Solvers

De S., Wang X., White J.K., Massachusetts Institute of Technology, US

In this paper we present several techniques to improve the efficiency and accuracy of the precorrected FFT accelerated Fast Stokes solver based on a boundary element discretization of the integral form of the incompressible Stokes [...]

Analysis of Realistic Large MEMS Devices

Ljung P., Bächtold M., Spasojevic M., Coyote Systems, Inc., US

A high-speed high-accuracy 3D field solver for the solution of coupled multi-physics encountered in MEMS is presented. The software AutoMEMS enables automatic model generation from layout, automatic meshing, adaptive mesh refinement of large complex geometries [...]

Creation of 3D Surface Models from 2D Layouts for BEM Anaylysis

Spasojevic M., Ljung P., Bächtold M., Coyote Systems, Inc., US

In this paper we present a new approach to creation of 3D surface models of MEMS devices from 2D layout masks suitable for analysis using the Boundary Element Method (BEM) [1]. The algorithm is implemented [...]

A Fast 3D Solver for Unsteady Stokes Flow with Applications to Micro-Electro-Mechanical Systems

Ye W., Kanapka J., White J.K., Massachusetts Institute of Technology, US

In this paper we describe the extensions made to FastStokes, a precorrected-FFT accelerated stady Stokes solver, to solve the unsteady Stokes equation. We demonstrate the accuracy of the numerical approach by comparing computed results to [...]

Efficiency and Accuracy Improvements for FastStokes, A Precorrected-FFT Accelerated 3-D Stokes Solver

Ye W., Kanapka J., Wang X., White J.K., Massachusetts Institute of Technology, US

In this paper we present several efficiency and accuracy improvement to the precorrected-FFT accelerated Stokes flow solver, FastStokes. Accuracy was improved by deriving analytical formulas for required integrals of Stokes equation Green sfunctions, cpu time [...]

Partial-Element Equivalent-Circuit Model Simulation for Designing RF-Wireless Communication Products with Embedded Passive Components

Smith W.R., National Semiconductor Corporation, US

Rapidly increasing functionality and performance of RF/wireless communication products, along with mandated decreases in size, weight, and cost, have created a critical need to replace discrete, surface-mounted passive circuit components with embedded passives in substrate [...]