Results 211 to 220 of about 351,496 (264)

Ice Resistance Calculation in Pack Ice Conditions

2020
With the decline of the Arctic sea ice cover, more and more marine transportation and oil production are moving into ice-covered waters. Pack ice conditions may be the most common scenario for the ice-going ships in airworthiness seasons, except the icebreaker. During the ship advancing in pack ice conditions, the ice pieces will contact with the hull,
Guiyong Zhang, Biye Yang, Yuyan Jiang, Zhe Sun   +3 more
openaire   +1 more source

Numerical Simulation of the Ice Resistance in Pack Ice Conditions

International Journal of Computational Methods, 2019
In this study, the ice resistance of ship under the pack ice condition has been estimated using Multi-Material Arbitrary Lagrangian–Eulerian formulation and penalty-based fluid–structure interaction technique. Especially, the hydrodynamic loads occurring during the ship–ice interaction were combined in the numerical model, which could be important for
Yang, Biye, Zhang, Guiyong, Huang, Zhigang, Sun, Zhe, Zong, Zhi   +4 more
openaire   +2 more sources

Humidity resistance of GaAs ICs

Proceedings of 1994 IEEE GaAs IC Symposium, 2005
A series of investigations into reliability effects of moisture on GaAs structures have lead to the conclusion that GaAs devices have resistance to degradation effects of humidity. This not only provides evidence that GaAs devices are ready for low-cost non-hermetic packages, but that GaAs ICs may have superior reliability performance compared to ...
W.J. Roesch, R. Winters, A.L. Rubalcava, B. Ingle   +3 more
openaire   +1 more source

Slip resistant properties of footwear on ice

Ergonomics, 2004
Current research on slipperiness of footwear has mainly focused on floors and lubricated floors. Slips and falls on icy and snowy surfaces involve not only outdoor workers, but also pedestrians and the general public; and occur in cold regions and in winter season in many parts of the world. However, in comparison with the size of the problem, research
Chuansi, Gao, John, Abeysekera, Mikko, Hirvonen, Raoul, Grönqvist   +3 more
openaire   +2 more sources

Hydraulic resistance of river ice jams

Journal of Hydrodynamics, 2018
The hydraulic resistance of river ice jams consists of the resistance due to the seepage flow through the jam and the resistance due to the shear stress on the undersurface of the jam. Existing empirical formulations attributed the entire jam resistance to the undersurface resistance of the jam, but relate the jam resistance to jam thickness with ...
Lin Fan, Ze-yu Mao, Hung Tao Shen
openaire   +1 more source

Effect of Bulbous Bow on Ice Resistance of Ice Ship

The Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse), 2018
Ice resistance is very important in design of an ice ship due to related to the propulsion system. Bulbous bow ship economically has advantage during sailing in open water due to lower resistance compared with an ice bow. On the other hand, the bulbous bow ship has higher ice resistance due to bulbous bow.
Efi Afrizal, J Koto, Wahid M.A
openaire   +1 more source

Thermal Resistance of IC Packages

IEEE Transactions on Broadcast and Television Receivers, 1973
Over the past few years, integrated circuit production has been dominated by the manufacture of digital circuits which typically operate at rather moderate power levels. For example, 5400 and 7400 series TTL circuits will dissipate approximately 150 mW.
openaire   +1 more source

Flow Resistance of River Ice Cover

Journal of Hydraulic Engineering, 1986
An empirical model is developed for describing the time‐dependent variation of the hydraulic resistance coefficient of a river's ice cover as a function of weather and flow conditions. The physical implications of the model formulation are discussed along with its development.
Hung Tao Shen, Poojitha D. Yapa
openaire   +1 more source

Ship Resistance Validation Using Artificial Ice

Volume 8: Ian Jordaan Honoring Symposium on Ice Engineering, 2015
In 2013, the first model tests with artificial ice were performed in MARIN’s Concept Basin. A ‘fishbone’ type of channel was made out of rigid polypropylene (PP) particles, surrounded by large rigid PP plates, creating a testing case that is similar to pre-sawn ice conditions in refrigerated model test facilities.
Solange van der Werff, Joris Brouwer, Gerco Hagesteijn   +2 more
openaire   +1 more source

Flow resistance of ice-covered streams

Canadian Journal of Civil Engineering, 1984
This paper deals with the underlying theory of the hydraulics of channel flow with a buoyant boundary as an ice cover. It commences by developing the velocity distribution in two-dimensional covered channel flow using the Reynolds form of the Navier–Stokes equation in conjunction with the Prandtl – Von Karman mixing length theory.
S. P. Chee, M. R. I. Haggag
openaire   +1 more source