| Model and Subcomponent Development for a Pulse-Combustor-Driven Microgenerator |
31 AUG 2004 |
76 pages |
| Authors:
Ben T. Zinn; Ari Glezer; Mark G. Allen; Suresh Menon; David Taylor; GEORGIA INST OF TECH ATLANTA
|
 | This project focused on an investigation of the feasibility of pulse- combustion-based micro heat engines for electrical power generation. The micro heat engines to be studied are based on a reciprocating free piston that is driven by a periodic pulse combustion process, resulting in high levels of integration of the mechanical and electrical functionality of the engine (i.e., the same piston performs both the fuel-to-mechanical energy conversion as well as ... |
|
| Fluidic Virtual Aerosurfaces for Flow Control Applications |
MAR 2004 |
74 pages |
| Authors:
Ari Glezer; GEORGIA INST OF TECH ATLANTA SCHOOL OFMECHANICAL ENGINEERING
|
| This research program has focused on a novel approach to the control of the aerodynamic performance of lifting surfaces by fluidic modification of their apparent aerodynamic shape, or virtual aerosurface shaping, This flow control approach emphasizes fluidic modification of the "apparent" aerodynamic shape of the surface with the objective of altering or prescribing the streamwise pressure gradient. Control is typically effected by the interactions of arrays of synthetic jet actuators ... |
|
| Demonstration of Robust Micromachined Jet Technology and its Application to Realistic Flow Control Problems |
30 SEP 2000 |
52 pages |
| Authors:
Mark G. Allen; Ari Glezer; GEORGIA INST OF TECH ATLANTA
|
| In this work, we are investigating the use of microfabrication technology to create a micromachined fluidic control system (consisting of micromachined actuators, sensors, and control/drive circuitry) with a goal of application in practical fluids problems, such as UAV-scale aerodynamic control. Our approaches include: (1) the development of suitable micromachined synthetic jets (microjets) as actuators, which obviate the need to physically extend micromachined structures into an external flow; and (2) a ... |
|
| Shear Flow Control Using Synthetic Jet Fluidic Actuator Technology |
31 JUL 1999 |
138 pages |
| Authors:
Ari Glezer; GEORGIA INST OF TECH ATLANTA SCHOOL OFMECHANICAL ENGINEERING
|
| This research outlined in this report focuses on a novel approach to manipulation and control of shear flows using surface fluidic actuators based on synthetic jet technology. Synthetic jets are zero-mass-flux in nature and are synthesized from the working fluid in the flow system in which they are embedded. Although there is no net mass injection, the jets enable momentum transfer into the flow system to be controlled. Thus the ... |
|
| Neural Network Determination of Optical Phase Correction in a Plane Shear Layer Using Parallel Optoelectronic Image Processing and Global Optical Flow Diagnostics |
JUL 1998 |
119 pages |
| Authors:
Martin Brooke; Ari Glezer; Nan Marie Jokerst; GEORGIA INST OF TECH ATLANTA SCHOOL OFMECHANICAL ENGINEERING
|
| Neural networks that allow aero-optic phase correction to be made using localized measurements without an external probe beam are being developed in an information-rich laboratory environment. The neural networks are trained to relate phase corrections to low-order modal descriptions of a plane shear layer obtained by a proper orthogonal decomposition (POD) applied to index of refraction data. Optical measurements are taken in a plane shear ... |
|
| Equipment for Neural Network Determination of Optical Phase Corrections Using Parallel Optical Hardware and Control Using Micromachined Microjets |
DEC 97 |
26 pages |
| Authors:
Mark Allen; Ari Glezer; Nan M. Jokerst; GEORGIA INST OF TECH ATLANTA SCHOOL OFELECTRICAL AND COMPUTER ENGINEERING
|
| Herein, we report upon the purchase of equipment used for the development of diagnostic and manipulation hardware associated with the aero- optic effect. First, we report upon the purchase of diagnostic equipment associated with the measurement of turbulent flows. Second, we report upon the purchase of semiconductor etching hardware used in the hardware implementation of a diagnostic high frame rate 'smart' camera for imaging turbulent flows and for the realization ... |
|
| MEMS-Based Diagnostics for Turbulent Shear Flows |
APR 97 |
11 pages |
| Authors:
Ari Glezer; Mark Allen; Martin Brooke; GEORGIA INST OF TECH ATLANTA
|
| The objective of this section of the research is to develop hardware for fast processing of charge coupled display (CCD) images. This hardware will take digital CCD output and process it at the same output data rate of the CCD. The result is processed images at the maximum rate possible with a CCD camera. In particular, the hardware will perform convolutions of the input images with a digitally stored convolution ... |
|
| Novel Diagnostic Techniques and Actuator Technology for Turbulent Shear Flows |
30 APR 96 |
76 pages |
| Authors:
Ari Glezer; GEORGIA INST OF TECH ATLANTA SCHOOL OF MECHANICAL ENGINEERING
|
| A new approach to the manipulation and control of shear flows using novel fluidic technology based on synthetic jets has been developed. These jets have the unique property of being zero-mass-flux in nature; i.e., they are synthesized from the working fluid in the flow system in which they are embedded. Although there is no net mass injection into the overall system, the jets allow momentum transfer into the embedding flow. ... |
|
| Real-Time Adaptive Control of Mixing in a Plane Shear Layer |
14 DEC 93 |
225 pages |
| Authors:
Ari Glezer; Frank H. Champagne; ARIZONA UNIV TUCSON
|
| A control system for the enhancement and regulation of mixing in a nonreactive plane shear layer has been developed in a two-stream closed-return water facility. Mixing of a passive scalar is estimated using a thermal analog in which the two streams have uniform, steady temperatures differing by 3 C. Control is effected via an array of surface heaters flush-mounted on the flow partition and cross-stream temperature distributions are measured with ... |
|
Reports by Author
