scholarly journals Late-Time Mixing Sensitivity to Initial Broadband Surface Roughness in High-Energy-Density Shear Layers

2016 ◽  
Vol 117 (22) ◽  
Author(s):  
K. A. Flippo ◽  
F. W. Doss ◽  
J. L. Kline ◽  
E. C. Merritt ◽  
D. Capelli ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Energy Density ◽  
High Energy ◽  
Shear Layers ◽  
High Energy Density ◽  
Late Time

Experimental design to generate strong shear layers in a high-energy-density plasma

2010 ◽  
Vol 6 (2) ◽  
pp. 179-184 ◽  
Author(s):  
E.C. Harding ◽  
R.P. Drake ◽  
Y. Aglitskiy ◽  
R.S. Gillespie ◽  
M.J. Grosskopf ◽  
...  
Keyword(s):  
Experimental Design ◽  
Energy Density ◽  
High Energy ◽  
Shear Layers ◽  
High Energy Density ◽  
Strong Shear ◽  
Density Plasma

scholarly journals Blast-wave driven Kelvin-Helmholtz shear layers in a laser driven high-energy-density plasma

2010 ◽  
Vol 336 (1) ◽  
pp. 139-143 ◽  
Author(s):  
O. A. Hurricane ◽  
J. F. Hansen ◽  
E. C. Harding ◽  
V. A. Smalyuk ◽  
B. A. Remington ◽  
...  
Keyword(s):  
Energy Density ◽  
Blast Wave ◽  
High Energy ◽  
Shear Layers ◽  
High Energy Density ◽  
Density Plasma

scholarly journals Late-time mixing and turbulent behavior in high-energy-density shear experiments at high Atwood numbers

2018 ◽  
Vol 25 (5) ◽  
pp. 056315 ◽  
Author(s):  
K. A. Flippo ◽  
F. W. Doss ◽  
E. C. Merritt ◽  
B. G. DeVolder ◽  
C. A. Di Stefano ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Late Time

scholarly journals A Novel Laser-Aided Machining and Polishing Process for Additive Manufacturing Materials with Multiple Endmill Emulating Scan Patterns

2021 ◽  
Vol 11 (20) ◽  
pp. 9428
Author(s):  
Mohammad Masud Parvez ◽  
Sahil Patel ◽  
Sriram Praneeth Isanaka ◽  
Frank Liou
Keyword(s):  
Surface Roughness ◽  
Additive Manufacturing ◽  
Energy Density ◽  
Dimensional Accuracy ◽  
High Energy ◽  
Primary Energy ◽  
High Energy Density ◽  
Average Roughness ◽  
Induce Process ◽  
Surface Improvement

In additive manufacturing (AM), the surface roughness of the deposited parts remains significantly higher than the admissible range for most applications. Additionally, the surface topography of AM parts exhibits waviness profiles between tracks and layers. Therefore, post-processing is indispensable to improve surface quality. Laser-aided machining and polishing can be effective surface improvement processes that can be used due to their availability as the primary energy sources in many metal AM processes. While the initial roughness and waviness of the surface of most AM parts are very high, to achieve dimensional accuracy and minimize roughness, a high input energy density is required during machining and polishing processes although such high energy density may induce process defects and escalate the phenomenon of wavelength asperities. In this paper, we propose a systematic approach to eliminate waviness and reduce surface roughness with the combination of laser-aided machining, macro-polishing, and micro-polishing processes. While machining reduces the initial waviness, low energy density during polishing can minimize this further. The average roughness (Ra=1.11μm) achieved in this study with optimized process parameters for both machining and polishing demonstrates a greater than 97% reduction in roughness when compared to the as-built part.

A HIGH ENERGY DENSITY ZINC/OXYGEN BATTERY SYSTEM

1966 ◽  
Author(s):  
S. CHODOSH ◽  
E. KATSOULIS ◽  
M. ROSANSKY
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Battery System

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

Si Nanowire Anode Prepared by Chemical Etching for High Energy Density Lithium-ion Battery

2013 ◽  
Vol 28 (11) ◽  
pp. 1207-1212 ◽  
Author(s):  
Jian-Wen LI ◽  
Ai-Jun ZHOU ◽  
Xing-Quan LIU ◽  
Jing-Ze LI
Keyword(s):  
Energy Density ◽  
Lithium Ion Battery ◽  
Chemical Etching ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Si Nanowire
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