scholarly journals Development of ultrathin thermal ground plane with multiscale micro/nanostructured wicks

2020 ◽  
Vol 22 ◽  
pp. 100738
Author(s):  
Yinchuang Yang ◽  
Dong Liao ◽  
Hongzhao Wang ◽  
Jian Qu ◽  
Jian Li ◽  
...  
Keyword(s):  
Ground Plane ◽  
Thermal Ground Plane

A large scale Titanium Thermal Ground Plane

2013 ◽  
Vol 62 ◽  
pp. 178-183 ◽  
Author(s):  
Marin Sigurdson ◽  
YuWei Liu ◽  
Payam Bozorgi ◽  
David Bothman ◽  
Noel MacDonald ◽  
...  
Keyword(s):  
Large Scale ◽  
Ground Plane ◽  
Thermal Ground Plane

Development and Experimental Validation of a Micro/Nano Thermal Ground Plane

2011 ◽  
Author(s):  
H. Peter J. de Bock ◽  
Shakti Chauhan ◽  
Pramod Chamarthy ◽  
Chris Eastman ◽  
Stanton Weaver ◽  
...  
Keyword(s):  
Experimental Validation ◽  
Ground Plane ◽  
Electronics Cooling ◽  
Heat Pipes ◽  
Working Fluid ◽  
Heat Sources ◽  
Two Phase ◽  
Evaporation And Condensation ◽  
Two Phase Heat Transfer ◽  
Thermal Ground Plane

Heat pipes are commonly used in electronics cooling applications to spread heat from a concentrated heat source to a larger heat sink. Heat pipes work on the principles of two-phase heat transfer by evaporation and condensation of a working fluid. The amount of heat that can be transported is limited by the capillary and hydrostatic forces in the wicking structure of the device. Thermal ground planes are two-dimensional high conductivity heat pipes that can serve as thermal ground to which heat can be rejected by a multitude of heat sources. As hydrostatic forces are dependent on gravity, it is commonly known that heat pipe and thermal ground plane performance is orientation dependent. The effect of variation of gravity force on performance is discussed and the development of a miniaturized thermal ground plane for high g operation is described. In addition, experimental results are presented from zero to −10g acceleration. The study shows and discusses that minimal orientation or g-force dependence can be achieved if pore dimensions in the wicking structure can be designed at micro/nano-scale dimensions.

Boiling-driven, wickless, and orientation-independent thermal ground plane

2021 ◽  
Vol 167 ◽  
pp. 120817
Author(s):  
Joo Hyun Moon ◽  
Dani Fadda ◽  
Dong Hwan Shin ◽  
Jin Sub Kim ◽  
Jungho Lee ◽  
...  
Keyword(s):  
Ground Plane ◽  
Thermal Ground Plane

Effect of Integrated Copper Pad on the Performance of Boiling-Driven Wickless Thermal Ground Plane

2021 ◽  
pp. 117595
Author(s):  
Joo Hyun Moon ◽  
Xiaomeng Wang ◽  
Dani Fadda ◽  
Dong Hwan Shin ◽  
Jungho Lee ◽  
...  
Keyword(s):  
Ground Plane ◽  
Thermal Ground Plane

Radiated Electric Field from a Solar Cell Module Set on the Ground Plane

2010 ◽  
Vol 130 (8) ◽  
pp. 724-732
Author(s):  
Ryosuke Hasegawa ◽  
Mariko Tomisawa ◽  
Masamitsu Tokuda
Keyword(s):  
Solar Cell ◽  
Electric Field ◽  
Ground Plane ◽  
Cell Module ◽  
Solar Cell Module

Simplified Prediction of Ply Steer in Radial Tires

1980 ◽  
Vol 8 (1) ◽  
pp. 3-9 ◽  
Author(s):  
C. W. Bert
Keyword(s):  
Composite Laminate ◽  
Ground Plane ◽  
Lateral Force ◽  
Rolling Contact ◽  
Slip Angle ◽  
Uniform Stress ◽  
Rubber Composite ◽  
Laminate Theory ◽  
Contact Models ◽  
Uniform Stress State

Abstract Ply steer is a rolling contact phenomenon which manifests itself as a lateral force acting at the ground plane of a tire constrained in yaw or a change in slip angle of a tire free to yaw. It has long been known that radial tires generally exhibit greater ply steer than do bias tires. However, the only previously published quantitative analysis of this phenomenon considered the multi-layer cord-rubber composite by means of netting analysis, which is not very accurate at cord angles typical of radial tire belts. A simple, explicit expression is developed herein by combining modern composite laminate theory with two very simple, uniform-stress-state tire-road contact models. The ply-steer results predicted by the resulting expressions are compared with some experimental results and the agreement is found to be reasonably satisfactory.

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