Browsing UMBC Mechanical Engineering Department by Title
Now showing items 1-20 of 52
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An active forming grinding method for cylindrical involute gears based on a second-order transmission error model
(Science Research Association, 2019-03-23)An active form-grinding method is proposed to obtain excellent and stable contact performance of cylindrical gears by designing modification forms based on a predesigned controllable second-order transmission error ... -
Analysis of Wake Structures Behind an Oscillating Square Cylinder Using Dynamic Mode Decomposition
(AIAA Aviation Forum, 2016)A dynamic mode decomposition (DMD) algorithm has been used to analyze the vortex structures shedding from an oscillating square cylinder. The flow fields are simulated using a high-order accurate flux reconstruction/correction ... -
Cell deformation cytometry using diode-bar optical stretchers
(Society of Photo-Optical Instrumentation Engineers., 2010-08-04)The measurement of cell elastic parameters using optical forces has great potential as a reagent-free method for cell classification, identification of phenotype, and detection of disease; however, the low throughput ... -
A combined experimental and computational study of a vertical gust generator in a wind tunnel
(AIAA, 2019)Experimental and numerical studies have been performed to investigate the performance of a vertical gust generator in a wind tunnel. Results from both experimental Particle Image Velocimetry (PIV) and those from numerical ... -
Compact Direct Flux Reconstruction for the Navier-Stokes Equations on Dynamic Meshes
(AIAA Aviation Forum, 2017)In this study, the high-order discontinuous compact direct flux reconstruction (CDFR) method is used to solve the two-dimensional (2D) Navier-Stokes equations on quadrilateral unstructured dynamic meshes. Within a standard ... -
A comparative study of implicit Jacobian-free Rosenbrock-Wanner, ESDIRK and BDF methods for unsteady flow simulation with high-order flux reconstruction formulations
(2019-04-09)We conduct a comparative study of the Jacobian-free linearly implicit Rosenbrock-Wanner (ROW) methods, the explicit rst stage, singly diagonally implicit Runge-Kutta (ESDIRK) methods, and the second-order backward ... -
A Comprehensive Aero-Hydro-Structural Analysis of a 5-MW Offshore Wind Turbine System: Towards Cost-Effective Deployment of Offshore Wind Turbines in Maryland
(AIAA SciTech Forum, 2016)To facilitate the deployment of offshore wind turbines in Maryland wind energy area, a comprehensive aero-hydro-structural analysis is conducted for a 5-MW offshore wind turbine system. The soil-foundation interaction under ... -
Continuous Gradient Temperature Raman Spectroscopy of Fish Oils Provides Detailed Vibrational Analysis and Rapid, Nondestructive Graphical Product Authentication
(MDPI, 2018-12-12)Background: Gradient temperature Raman spectroscopy (GTRS) applies the continuous temperature gradients utilized in differential scanning calorimetry (DSC) to Raman spectroscopy, providing a new means for rapid high ... -
Derivative-based global sensitivity analysis for models with high-dimensional inputs and functional outputs
(2019-02-17)We present a framework for derivative-based global sensitivity analysis (GSA) for models with high-dimensional input parameters and functional outputs. We combine ideas from derivative-based GSA, random eld representation ... -
Design and experimental results of the 1-T Bitter Electromagnet Testing Apparatus (BETA)
(AIP, 2018-05)The Bitter Electromagnet Testing Apparatus (BETA) is a 1-Tesla (T) technical prototype of the 10 T Adjustable Long Pulsed High-Field Apparatus. BETA’s final design specifications are highlighted in this paper which include ... -
Design of a disk-swing driven piezoelectric energy harvester for slow rotary system application
(IOP Publishing Ltd, 2019-04-03)This paper presents mathematical modelling of an energy harvester that converts slow mechanical rotation into piezoelectric vibration using a small disk and a pair of magnets, for a large scale machinery monitoring application ... -
Direct Numerical Simulation of Shock/Boundary Layer Interaction over Surface Roughness Using the High-Oder FR/CPR-LLAV Method
(AIAA SciTech Forum, 2016)A recently developed high-order accurate flux reconstruction/correction procedure via reconstruction (FR/CPR) method equipped with localized Laplacian artificial viscosity (LLAV) shock-capturing capability is used to ... -
A dynamic adaptive particle swarm optimization and genetic algorithm for different constrained engineering design optimization problems
(SAGE journals, 2018-12-12)A dynamic adaptive particle swarm optimization and genetic algorithm is presented to solve constrained engineering optimization problems. A dynamic adaptive inertia factor is introduced in the basic particle swarm ... -
Dynamic ray tracing for modeling optical cell manipulation
(OSA, 2010-07-23)Current methods for predicting stress distribution on a cell surface due to optical trapping forces are based on a traditional ray optics scheme for fixed geometries. Cells are typically modeled as solid spheres as this ... -
Effect of Viscoelasticity on the Analysis of Single-Molecule Force Spectroscopy on Live Cells
(Elsevier Inc, 2012-07-03)Single-molecule force spectroscopy is used to probe the kinetics of receptor-ligand bonds by applying mechanical forces to an intermediate media on which the molecules reside. When this intermediate media is a live cell, ... -
Elastic capsule deformation in general irrotational linear flows
(IOP Publishing Ltd, 2012-07-05)Knowledge of the response of elastic capsules to an imposed fluid flow is necessary for predicting the deformation and motion of biological cells and synthetic capsules in microfluidic devices and in microcirculation. ... -
Engineering metabolite-responsive transcriptional factors to sense small molecules in eukaryotes: current state and perspectives
(BioMed Central Ltd, 2019-03-26)Nature has evolved exquisite sensing mechanisms to detect cellular and environmental signals surrounding living organisms. These biosensors have been widely used to sense small molecules, detect environmental cues and ... -
FEM Convergence for PDEs with Point Sources in 2-D and 3-D
(2015)Numerical theory provides the basis for quantification of the accuracy and reliability of a FEM solution by error estimates on the FEM error vs. the mesh spacing of the FEM mesh. This paper presents techniques needed in ... -
FEM Convergence Studies for 2-D and 3-D Elliptic PDEs with Smooth and Non-Smooth Source Terms in COMSOL 5.1
(2015)Numerical theory provides the basis for quanti cation on the accuracy and reliability of a FEM solution by error estimates on the FEM error vs. the mesh spacing of the FEM mesh. This paper presents techniques needed in ... -
Finite Element Convergence Studies of a Time-Dependent Test Problem Using COMSOL 5.1
(2015)The finite element method (FEM) is a well known numerical method in solving partial differential equations (PDEs). All numerical methods inherently have error in comparison to the true solution of the PDE. Base on the FEM ...