Ye W. – TechConnect Briefs

Efficient DSMC Modeling Techniques for Micro/Nano Gas Flows

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

An efficient DSMC technique for modeling of low-speed gas flows has been developed. THis technique greatly reduces the inherent DSMC noise and thus is suitable for modeling micro/nano gas flows whose typical velocities are below [...]

Boundary Integral Solution of Quasi-Linear Laplace Equation

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

An Integral approach based on the p-FTT acclerated BEM, which requires only surface discretization, has been developed for solving nonlinear equations. Examples of a Helmholtz and a quasi-linear Laplace problems in both a spherical domain [...]

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), [...]

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 [...]

On the Air Damping of Micro-Resonators in the Free-Molecular Region

Hutcherson S., Ye W., Georgia Institute of Technology, US

Predicting air damping on micromachined mechanical resonators is crucial in the design of high-performance filters used in wireless communication systems. In the past, most of the work focused on devices with minimum feature size on [...]

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 [...]

Efficient 3-D Numerical Code “FastSlipStokes” for Drag Force Calculation Due to Slip Flow

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

Drag force calculation due to slip flows is important in predicting the performance of the microstructures with minimum feature size around 1 mm. In this paper, an efficient numerical approach to compute the drag force [...]

A Fast Stokes Solver for Generalized Flow Problems

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

Computing drag forces on geometrically complicated 3-D micromachined structures, such asan entire comb resonator, is a challenging problem. The recently developed FastStokes solver, based on precorrected-FFT accelerated iterative methods, has made analyzing such problems much [...]

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 [...]