Knobloch C.,Arnold Air force Base
Leading Edge | Year: 2015
The Offshore Technology Conference (OTC) will return to Houston, Texas, where it has been held annually since 1969 in May 2015. OTC is sponsored by 13 industry organizations and societies, of which SEG is one, which work cooperatively to develop the technical program each year. OTC is the world?s foremost event for development of offshore resources in drilling, exploration, production, and environmental protection. Advances in understanding the interfacial chemistry of oil in pores are leading to a suite of new enhanced oil-recovery technologies such as LoSal. These innovations are presented in the context of using ideas from other industries, fostering greater collaboration, and working development and deployment in tandem as critical Governors from several coastal states who have been leaders in the Outer Continental Shelf Governors Coalition will discuss the future of offshore energy production, assess the dialogue between the states and the federal government, and offer their visions of the future of offshore energy.steps to reducing turnaround times.
Lubarsky E.,Georgia Institute of Technology |
Reichel J.R.,Georgia Institute of Technology |
Zinn B.T.,Georgia Institute of Technology |
McAmis R.,Arnold Air force Base
Journal of Engineering for Gas Turbines and Power | Year: 2010
This paper describes an experimental investigation of the spray created by Jet A fuel injection from a plate containing sharp edged orifice 0.018 in. (457 μm) in diameter and L/D ratio of 10 into the crossflow of preheated air (555 K) at elevated pressure in the test section (4 atm) and liquid to air momentum flux ratio of 40. A two component phase Doppler particle analyzer was used for measuring the characteristics of the spray. The Weber number of the spray in crossflow was varied between 33 and 2020 and the effect of Weber number on spray properties was investigated. It was seen that the shear breakup mechanism dominates at Weber number greater than about 300. Droplets' diameters were found to be in the range of 15-30 μm for higher values of Weber numbers, while larger droplets (100-200 μm) were observed at Weber number of 33. Larger droplets were observed at the periphery of the spray. The droplet velocities and diameters were measured in a plane 30 mm downstream of the orifice along the centerline of the spray at an incoming airflow Mach number of 0.2. The droplets reach a maximum of 90% of the flow velocity at this location. The velocity of the droplets in the directions perpendicular to the airflow direction is higher at the periphery of the spray possibly due to the presence of larger droplets there. The rms values of the droplet velocities are highest slightly off the centerline of the spray due to the presence of vortices and shear layers around the liquid jet. The data presented here improve the understanding of spray formation processes, and provide benchmark data for computational fluid dynamics (CFD) code validation. © 2010 by ASME.
Landman D.,Old Dominion University |
Yoder D.,Arnold Air force Base
Journal of Aircraft | Year: 2014
A statistical engineering approach featuring a formally designed experiment has recently been implemented for calibration of an internal, strain-gauged, wind-tunnel balance at Arnold Engineering Development Complex. It was necessary to consider a substantially wide variation in balance temperature for this particular application. The cost to perform a balance calibration with the balance equilibrium temperature as a completely randomized factor was therefore prohibitive. A design-of-experiments approach using a run schedule with restricted randomization, known commonly as a split-plot design, is being evaluated. For more than a decade, design of experiments has been implemented in wind-tunnel strain-gauge balance calibration processes. Calibration with design of experiments is a characterization process where data are collected and analyzed using statistical methods, allowing conclusions to be drawn with chosen levels of confidence and power. A sequential approach to new balance calibration using existing hardware was demonstrated using a crossed design. A modified, two-active-factor, Box-Behnken design was executed at three temperature levels, and a second-order regression model was constructed in all factors. When compared to the traditional approach, a minimum 50% reduction in calibration duration and a reduction in overall residual error were demonstrated. Copyright © 2013 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Knobloch C.,Arnold Air force Base
Leading Edge | Year: 2014
The Offshore Technology Conference (OTC) will be hosted in Houston, Texas, from 5-8 May, 2014. Silvia Peppoloni, National Group for the Defense against Earthquakes and the Istituto Nazionale di Geofisica e Vulcanologia (Italy), will discuss the value of geoethics in joining humanistic and scientific visions as we search for socioeconomic solutions to practical problems that are compatible with respect of the environment and protection of nature and land. Jeffrey Immelt, chairman of the board and CEO, GE, will share his perspectives on the toughest challenges facing the global energy industry. He will give his views on the importance of rigorous policy and regulation, and the role of technology in driving growth and competitiveness. Geoscientists will also be interested in AAPG-sponsored technical sessions, including New Geophysical Approaches for Geohazard Consideration, Marine Archaeology and Environmental Studies in the Offshore Oil and Gas Industry, Petrotechnical Data Donation to Universities - Symposium on Results, and Underwater Monitoring Network: Strategy and Case Studies.
Swanson T.,Arnold Air force Base |
Isaac K.M.,Missouri University of Science and Technology
Journal of Aircraft | Year: 2010
This work is a computational study of the aerodynamics of a wing in a constant freestream at angles of attack ranging from 0 to 45° and an extremely low Reynolds number of 500. Four wings were studied: rectangular with and without camber and semi-ellipse with and without camber. Lift and drag coefficients were determined and their trends were explained, including a lift coefficient peak at ∼20° for all geometries investigated. Flow features were also identified and explained. The dominant flow feature was the tip vortex, which moves streamlines rootward and forms a spiral vortex at high angles of attack for rectangular wings. Semi-ellipse wings also have a spiral vortex at higher angles of attack. Surface stream traces were also investigated and showed complex vortex-dominated flow patterns that depended on planform shape and angle of attack.