Zobrazeno 1 - 10
of 23
pro vyhledávání: '"J. A. Demko"'
Autor:
Bart Geerts, J. Cory Demko
Publikováno v:
Monthly Weather Review. 138:3603-3622
This is the second part of a study that examines the daytime evolution of the thermally forced boundary layer (BL) circulation over a relatively isolated mountain, about 30 km in diameter and 2 km high, and its interaction with locally initiated deep
Autor:
J. Cory Demko, Bart Geerts
Publikováno v:
Monthly Weather Review. 138:1902-1922
The daytime evolution of the thermally forced boundary layer (BL) circulation over an isolated mountain, about 30 km in diameter and 2 km high, is examined by means of numerical simulations validated with data collected in the Cumulus Photogrammetric
Publikováno v:
AIP Conference Proceedings.
Long‐length high temperature superconducting (HTS) cable projects, over 1 km, are being designed that are cooled by flowing liquid nitrogen. The compact counter‐flow cooling arrangement which has the supply and return stream in a single cryostat
Autor:
C. M. Rey, R. C. Duckworth, J. A. Demko, A. Ellis, D. R. James, M. J. Gouge, E. Tuncer, J. G. Weisend
Publikováno v:
AIP Conference Proceedings.
The Oak Ridge National Laboratory (ORNL) has tested a 25‐m long prototype High Temperature Superconducting (HTS) cable with inherent Fault‐Current Limiting (FCL) capability at its HTS cable test facility. The HTS‐FCL cable and terminations were
Publikováno v:
AIP Conference Proceedings.
Multilayer insulation systems that have robust operational characteristics have long been a goal of many research projects. Such thermal insulation systems may need to offer some degree of structural support and/or mechanical integrity during loss of
Autor:
M. J. Gouge, J. A. Demko, M. L. Roden, J. F. Maguire, C. S. Weber, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, Jennifer Lock
Publikováno v:
AIP Conference Proceedings.
Several high temperature superconducting (HTS) cable demonstration projects have begun operation on the electric grid in the last few years with the liquid nitrogen-cooled, three-phase cable contained in one or more vacuum-insulated, flexible cryosta
Autor:
J. A. Demko, J. E. Fesmire, S. D. Augustynowicz, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, Jennifer Lock
Publikováno v:
AIP Conference Proceedings.
Thermal isolation of low-temperature systems from ambient environments is a constant issue faced by practitioners of cryogenics. For energy-efficient systems and processes to be realized, thermal insulation must be considered as an integrated system,
Autor:
J. A. Demko, R. C. Duckworth, M. Roden, M. Gouge, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, Jennifer Lock
Publikováno v:
AIP Conference Proceedings.
Long length vacuum insulated lines are used to carry flowing liquid nitrogen in several high temperature superconducting cable projects. An important, but rare, failure scenario is the abrupt or catastrophic loss of the thermal insulating vacuum prod
Publikováno v:
Journal of Propulsion and Power. 6:171-176
A computational/experimental study was conducted concerning the incompressible flow in a labyrinth seal at low leakage rates over a wide range of seal rotation rates. The predictions were obtained using a finite-difference code that utilized a higher
Publikováno v:
42nd AIAA Aerospace Sciences Meeting and Exhibit.