Articles

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Ultrasonic Method for Aircraft Wake Vortex Detection (with Rebecca J. Rodenhiser and Hamid Johari), Journal of Aircraft (2007)

This paper describes the experimental proof of concept study for an ultrasonic method of wake...

 

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Ultrasonic Method for Aircraft Wake Vortex Detection (with Rebecca J. Rodenhiser and Hamid Johari), 44th AIAA Aerospace Sciences Meeting and Exhibit: Reno, NV (2006)

This paper describes the experimental proof of concept study for an ultrasonic method of wake...

 

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Experimental Investigation of the Travel-time Variance of an Acoustic Wave Propagating Through The Grid-generated Turbulence (with Tatiana Andreeva), Journal of Waves in Random and Complex Media (2005)

An experimental technique for the investigation of the behaviour of acoustic wave propagation through a...

 

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Effect of Chaos and Stochastics Induced By Internal Waves on Acoustic Wave Propagation (with Tatiana A. Andreeva), Proceedings of the 9th International Conference on Structural Safety and Reliability: Rome, Italy (2005)

In the present paper the eikonal equation is considered in the form of a second...

 

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Experimental Investigation of Statistical Moments of Travel Time in Grid-Generated Turbulence (with T. A. Andreeva and S. B. Meleshi), 42nd AIAA Aerospace Sciences Meeting and Exhibit: Reno, NV (2004)

An experimental technique for investigation of the behavior of acoustic wave propagation through a turbulent...

 

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Ultrasound Technique for Prediction of Statistical Characteristics of Grid-Generated Turbulence (with T. A. Andreeva), AIAA Journal (2003)

Ultrasonic measurement techniques can be used to determine some characteristics of turbulent flows. In this...

 

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Ultrasonic flowmeters in determination of correlation functions of velocity and ultrasound wave fluctuations in grid-generated turbulence (with T. A. Andreeva), 9th AIAA/CEAS Aeroacoustics Conference and Exhibit: Hilton Head, S.C. (2003)

The paper is devoted to the experimental investigation of the statistical characteristics of the grid-generated...

 

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Ultrasonic Technique for Investigation of the Effect of Grid-Generated Turbulence on Sound Wave Propagation (with Tatiana A. Andreeva), Proceedings of the 41st Annual AIAA Aerospace Sciences Meeting & Exhibit: Reno, NV (2003)

This paper concerns an experimental study of the effects of the grid-generated turbulence on the...

 

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The WPI/Goddard Space Flight Center Projects Program (with Fred J. Looft), 32nd ASEE/IEEE Frontiers in Education Conference Proceedings (2002)

The WP/IGSFC (Goddard Space Flight Center) Projects Program is an off-campus, multi-disciplinary opportunity for students...

 

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Educating Engineering Students in Entrepreneurship (with Donald N. Zweip), ASEE/SEFI/TUB International Colloquium (2002)

Since it’s founding in 1865, the faculty, students, and alumni of Worcester Polytechnic Institute have...

 

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Stability and Heat Transfer Characteristics of Condensing Films (with James C. Hermanson, Peder C. Pedersen, Jeffrey S. Allen, M. A. Shear, Z. Q. Chen, and Andreas N. Alexandrou), Sixth Microgravity Fluid Physics and Transport Phenomena Conference: Abstracts (2002)
 

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Determination of Statistical Characteristics of Isotropic Turbulence (with T. A. Andreeva, F. J. Weber, and Hamid Johari), Proceedings of the ASME Fluids Engineering Division Summer Meeting: New Orleans, LA (2001)

Ultrasonic flow measurement technology has the potential to significantly improve flow measurement accuracy beyond that...

 

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Ultrasonic Beam Propagation in Turbulent Flow (with F. J. Weber and Hamid Johari), Proceedings of the 2001 ASME Fluids Engineering Division Summer Meeting: New Orleans, LA (2001)

A study was conducted to examine how a coherent sound burst, such as those used...

 

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Global Projects Prepare WPI Students for the 21st Century (with Donald N. Zwiep), Educating the Engineer for the 21st Century: Proceedings of the 3rd Workshop on Global Engineering Education: Aachen, Germany (2000)

The WPI project based curriculum, which emphasizes discovery based learning are an alternative to the...

 

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Stability and Heat Transfer Characteristics of Condensate Fluid Layers in Reduced Gravity (with James C. Hermanson, Andreas N. Alexandrou, Peder C. Pedersen, and Jeffrey S. Allen), Proceedings of the Fifth Microgravity Fluid Physics and Transport Phenomena Conference: Cleveland, OH (2000)

The focus of this ground-based program is the study of film condensation phenomena under variable,...

 

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Collaborative Undergraduate Research (with Hamid Davoodi, Frederick Just, Ali Saffar, and Mohammad Noori), 29th Annual ASEE/IEEE Frontiers In Education Conference Proceedings (1999)

A joint undergraduate research project between University of Puerto Rico at Mayagüez (UPRM) and Worcester...

 

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Direct Measurement of Circulation Using Ultrasound (with Hamid Johari), Experiments in Fluids (1998)

Ultrasound time-of-flight methods employing counter-propagating ultrasonic pulses are utilized for the direct measurement of circulation...

 

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Redesigning Engineering Education (with Edward A. Parrish), Realizing the New Paradigm for Engineering Education: Proceedings (1998)

In developing the PLAN, WPI sought to address concerns inherent to its then traditional curriculum...

 

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The Restoration of a WWII Avenger Provides Projects For WPI Students (with Donald N. Zwiep and Nathan H. Mayo), Proceedings of the 36th Aerospace Sciences Meeting: Reno, NV (1998)

In 1970 WPI completely revised its traditional approach to engineering education. The resulting program, the...

 

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What Was Learned - Outcomes Assessment Under Criteria 2000 At WPI (with Lance Schachterle and John F. Carney III), 27th ASEE/IEEE Frontiers in Education Conference Proceedings (1997)

Six WPI engineering programs were evaluated under Criteria 2000 during a pilot accreditation visit in...

 

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Development of Outcome Assessments at WPI (with Lance Schachterle), 26th ASEE/IEEE Frontiers in Education Conference Proceedings (1996)

The WPl PLAN, adopted by the WPl faculty in 1970, strongly anticipates current thinking about...

 

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Teaching the Necessary "Soft Skills" Through Corporate-Based Projects (with Lance Schachterle), 1996 ABET Annual Meeting Proceedings (1996)
 

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Solute Nucleation and Growth in Supercritical Fluid Mixtures (with Gregory T. Smedley, Gerald Wilemski, W. Terry Rawlins, David B. Oakes, and Prakash Joshi), Proceedings of the 3rd Microgravity Fluid Physics Conference: Cleveland, OH (1996)

This research effort is directed toward two primary scientific objectives: (1) to determine the gravitational...

 

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Modeling of Macroscopic/Microscopic Transport Phenomena in Zeolite Crystal Solutions Under Microgravity Conditions (with Andreas Alexandrou, Nikos A. Gatsonis, and Albert Sacco), Proceedings of the 1996 NASA Microgravity Materials Science Conference: Huntsville, AL (1996)

Crystals grown from special liquid solutions find important industrial applications. Most often the physics and...

 

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Circulation Measurements About a Rapidly Pitching Airfoil Using an Ultrasonic System (with F. J. Weber, Jr. and H. Johari), 26th AIAA Fluid Dynamics Conference: San Diego, CA (1995)

An ultrasonic system was developed to measure the circulation about a sinusoidally pitching NACA 4418...

 

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The Direct Measurement of Circulation in Free Surface Vortices (with R. H. Smith and H. Johari), 33rd Aerospace Sciences Meeting and Exhibit: Reno, NV (1995)

Ultrasonic techniques have been used to directly and non-intrusively measure the circulation of free surface...

 

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Advanced aeronatics design: Project based engineering education at WPI (with D. J. Olinger and A. N. Alexandrou), Aircraft Design, Systems and Operations Conference: Monterey, CA (1993)

One element of WPI's project-based curriculum is its interdisciplinary Advanced Aeronautics Design Program. Students participating...

 

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Measurement of the Nonsteady Flow Field in the Opening of a Resonating Cavity Excited by Grazing Flow (with H. R. Graf), Journal of Fluids and Structures (1993)

Flow past the opening of a cavity can excite acoustic resonance. The periodic velocity field...

 

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Low Gravity Environment On-board Columbia During STS-40 (with M. J.B. Rogers, C. R. Baugher, R. C. Blanchard, R. DeLombard, D. H. Matthiesen, W. Neupert, and P. Roussel), Proceedings of the 31st Aerospace Sciences Meeting & Exhibit (1993)

The first NASA Spacelab Life Sciences mission (SLS-1) flew 5 June to 14 June 1991...

 

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A Comparison of Low-Gravity Measurements On-Board Columbia During STS-40 (with M. J.B. Rogers, C. R. Baugher, R. C. Blanchard, R. DeLombard, D. H. Matthiesen, W. Neupert, and P. Roussel), Microgravity Science and Technology (1993)

The first NASA Spacelab Life Sciences mission (SLS-1) flew 5 June to 14 June 1991...

 

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Flow Excited Acoustic Resonance in a Deep Cavity: An Analytical Model (with Hans R. Graf), Proceedings of the Third International Symposium on Flow-Induced Vibrations and Noise: Anaheim, CA (1992)

Flow past the opening of a deep cavity can excite and sustain longitudinal acoustic modes...

 

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Spaceflight Payload Design, Flight Experience G-408 (with Fred J. Looft; Albert Sacco, Jr.; Robert Thompson; Anthony G. Dixon; Dino Roberti; Robert Labonte; and Larry Moschini), Proceedings of the 1992 Shuttle Small Payloads Symposium: Baltimore, MD (1992)

Worcester Polytechnic Institute's first payload of spaceflight experiments flew aboard Columbia, STS-40, during June of...

 

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Solar Powered Multipurpose Remotely Powered Aircraft (with Andreas N. Alexandrou, R. F. Cohn, D. J. Olinger, Charlotte K. Cody, Agnes Chan, Kwok-Hung Cheung, Kristin Conley, Paul M. Crivelli, Christian T. Javorski, Nancy P. Torrey, and Michael L. Traver), NASA/USRA University Advanced Design Program: Proceedings of the 8th Annual Summer Conference: Washington, D.C. (1992)

Increase in energy demands coupled with rapid depletion of natural energy resources have deemed solar...

 

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Analysis of Natural Convection in a Low Gravity Environment (with Ethan Mattor, Peter Blonznalis, and Richard Schoenberg), 30th Aerospace Sciences Meeting & Exhibit: Reno, NV (1992)

Natural convection inside a spherical container was studied experimentally with two apparatuses at low buoyancy...

 

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Unsteady Flow in Vertical, Converging Tubes (with Hamid Johari), Fluid Transients and Fluid-Structure Interaction: Presented at ASME Winter Annual Meeting: Atlanta, GA (1991)

The discharge of liquids from vertical tubes with various contraction geometries was studied via the...

 

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The Evolution of the WPI Advanced Space Design Program - An Evolving Program of Technical and Social Analysis Using the NASA Space Shuttle for Engineering Education (with Fred J. Looft and Robert C. Labonte), IEEE Transactions on Education (1991)

In December of 1982, Worcester Polytechnic Institute, with the cooperation and support of the MITRE...

 

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Advanced Space Design Program (with Francis C. Lutz), Innovations for Mechanical Engineering Curricula for the 1990's (1990)

Worcester Polytechnic Institute's Advanced Space Design (ASD) Program provides project-based design experiences that combine a...

 

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A Transient Electromagnetic Flowmeter and Calibration Facility (with Paul J. Lefebvre), Journal of Fluids Engineering (1990)

An electromagnetic flowmeter was developed to measure transient flows at a data rate of 60...

 

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Ultrasonic Measurement of the Geometric Parameters of Gaseous Voids in Low Gravity Fluid Containers (with A. T. Patten), 28th Aerospace Sciences Meeting: Reno, Nevada (1990)

A demonstration system for the ultrasonic gauging of fluids in low-gravity has been designed and...

 

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The Role of the Peripheral Vascular Bed in Arterial Pulse Wave Propagation (with L. S. Baker; F. A. Anderson, Jr.; and H. B. Wheeler), ASME Winter Annual Meeting: Chicago, IL (1988)

An analytical model was developed to simulate human arterial pulse wave propagation in major arteries....

 

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LDV Measurements of the Unsteady Shear Layer Above a Resonant Cavity (with H. R. Graf, D. D. Erickson, and R. Westhaver), Proceedings of the 1st National Fluid Dynamics Conference (1988)

Flow past a wall mounted cavity can excite strong acoustic resonance in the cavity. The...

 

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An Update to the MITRE/WPI Space Shuttle Prgoram: GASCAN G-408 (with Fred J. Looft), Proceedings of the 1987 Get Away Special Experimenter's Symposium: Greenbelt, MD (1987)

The objective of the MITRE/WPI Space Shuttle Program was to develop a set of scientific...

 

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The Use of Ultrasound Imaging in the In-Vivo Determination of Normal Human Arterial Compliance (with Lauren I. Stratouly, Paul A. Cardullo, Frederick A. Anderson Jr., and H. Brownell Wheeler), Proceedings of the 13th Annual Northeast Bioengineering Conference (1987)

Elastic properties of major arteries were measured in vivo in ten normal volunteers, age 26...

 

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Tone Generation by Flow Past Deep Wall Cavities (with D. D. Erickson), AIAA 25th Aerospace Sciences Meeting: Reno, Nevada (1987)

Flow past deep wall cavities exhibits strong interaction with the standing wave system in the...

 

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A Transient Electromagnetic Flowmeter (with Paul J. Lefebvre), Proceedings of the 1986 Symposium on Measuring and Metering of Unsteady Flows: Anaheim, CA (1986)

An electromagnetic flowmeter was developed to measure transient flows with a frequency response of 60...

 

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Shear Layer Coupling with Side-Branch Resonators (with D. D. Erickson, C. F. Maguire III, and M. J. Moeller), ASME Winter Annual Meeting: Anaheim, CA (1986)

High velocity flow past the junction of a side branch with a pipe can result...

 

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Interpretation of Venous Occlusion Plethysmography Using a Nonlinear Model (with F. A. Anderson, Jr. and H. Brownell Wheeler), Medical and Biological Engineering and Computing (1986)

Venous occlusion plethysmography (VOP) is a noninvasive technique widely employed for the detection of deep-vein...

 

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Ultrasonic Fluid Measurement, In-Space Research, Technology and Engineering Workshop: Fluid Management: Williamsburg, VA (1985)

Objective: Determination of liquid quantity and configuration under static and dynamic conditions.
Important for: consumption...

 

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The WPI Space Glove Design Project (with Allen C. Hoffman, Holly K. Ault, and Francis C. Lutz), Space Tech Conference: Anaheim, California (1985)

WPI was one of four colleges and universities awarded NASA grants for student design and...

 

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Utilization of Electronic Spreadsheets for Laboratory Data Analysis (with C. F. Maguire III), Proceedings of the 1985 International Computers in Engineering Conference and Exhibit: Boston, MA (1985)

The utilization of business spreadsheets for laboratory data manipulation is discussed. The spreadsheet, LOTUS 1-2-3,...

 

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Noninvasive Detection of Arterial Occlusive Disease: a Theoretical and Model Study (with Lauren I. Stratouly, Frederick A. Anderson Jr., and H. Brownell Wheeler), Proceedings of the 11th Northeast Bioengineering Conference (1985)

To develop a noninvasive method of detecting arterial occlusive disease, pulse waveforms were recorded at...

 

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Modeling of Purge Valve Closure (with Benito Zannini), Symposium on the Design Performance and Applications of Valves, 83-WA/FE-16 (1983)

In some nuclear reactor containment isolation applications, butterfly valves with pneumatic actuators are used to...

 

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Augmentation of Free Surface Heat and Mass Transfer Due to Electrostatic Fields (with Alan F. Smelewicz, Mark P. Majcher, and James B. Nystrom), ASME Winter Annual Meeting: Boston, MA (1983)

Experiments were conducted to measure heat transfer rates and mass transfer rates from a water...

 

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The Performance of Crossed-Vane Swirl Meters (with H. L. Lee), Vortex Flows: Presented at ASME Winter Annual Meeting: Chicago, IL (1980)

Vortimeters consisting of vanes rotating about pipe axes are frequently used to indicate the swirl...

 

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Lower Mode Response of Circular Cylinders in Cross-Flow (with P. A. March and Paul J. Lefebvre), Journal of Fluids Engineering (1980)

Transverse amplitude responses of a circular cylinder in cross-flow were determined as a function of...

 

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Laser Doppler Anemometry for Flow Measurement (with Lawrence C. Neale), Proceedings of the Symposium on Flow in Open Channels and Closed Conduits: Gaithersburg, MD (1977)

Laser doppler anemometers are non-invasive, linear, and inherently precise. Calibration, in the usual sense, is...

 

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Wave Induced Pressures on Submerged Plates (with Jong C. Shiau), Journal of Waterways, Harbor, and Coastal Engineering (1975)

The prediction of forces, or more precisely, the pressure distributions, experienced by submerged structures due...

 

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On the phenomenon of vortex street breakdown (with Sture K.F. Karlsson), Journal of Fluid Mechanics (1971)

A von Kármán vortex street generated in the usual way was subjected to a deceleration,...

 

Patents

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Ultrasonic Monitoring Method and System for Wake Turbulence Useful at Runways (with Hamid Johari), United States Patent Number: 6,062,076 (2000)

Two techniques for detecting vortices and their associated circulation are disclosed. The first is termed...

 

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Transient Flowmeter Calibration Facility (with Paul J. Lefebvre), United States Patent Number: 5,231,883 (1993)

An apparatus for defining the free surface of a moving column of a fluid in...