In contrast to slip-resistant shoes, fluid drainage capacity explains friction performance across shoes that are not slip-resistant

2022 ◽  
Vol 100 ◽  
pp. 103663
Author(s):  
Emily E. Meehan ◽  
Natasa Vidic ◽  
Kurt E. Beschorner
Keyword(s):  
Drainage Capacity ◽  
Friction Performance

Designing shoe tread for friction performance: a hierarchical approach

2021 ◽  
Vol 13 (sup1) ◽  
pp. S97-S99
Author(s):  
Kurt E. Beschorner ◽  
Emily E. Meehan ◽  
Arian Iraqi ◽  
Sarah L. Hemler
Keyword(s):  
Hierarchical Approach ◽  
Friction Performance

An insight on the MoS2 tribo-film formation to determine the friction performance of Mo-S-N sputtered coatings

2021 ◽  
pp. 126791
Author(s):  
Kaushik Hebbar Kannur ◽  
Teodor Huminiuc ◽  
Talha Bin Yaqub ◽  
Tomas Polcar ◽  
Christophe Pupier ◽  
...  
Keyword(s):  
Film Formation ◽  
Friction Performance

The Air-Side Thermal-Hydraulic Performance of Flat-Tube Heat Exchangers With Louvered, Wavy, and Plain Fins Under Dry and Wet Conditions

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Young-Gil Park ◽  
Anthony M. Jacobi
Keyword(s):  
Heat Transfer ◽  
Heat Exchangers ◽  
Hydraulic Performance ◽  
Operating Conditions ◽  
Geometrical Parameters ◽  
Flat Tube ◽  
Parametric Effects ◽  
Dry And Wet Conditions ◽  
Wet Surface ◽  
Friction Performance

The air-side thermal-hydraulic performance of flat-tube aluminum heat exchangers is studied experimentally for conditions typical to air-conditioning applications, for heat exchangers constructed with serpentine louvered, wavy, and plain fins. Using a closed-loop calorimetric wind tunnel, heat transfer and pressure drop are measured at air face velocities from 0.5 m/s to 2.8 m/s for dry- and wet-surface conditions. Parametric effects related to geometry and operating conditions on heat transfer and friction performance of the heat exchangers are explored. Significant differences in the effect of geometrical parameters are found for dry and wet conditions. For the louver-fin geometry, using a combined database from the present and the previous studies, empirical curve-fits for the Colburn j- and f-factors are developed in terms of a wet-surface multiplier. The wet-surface multiplier correlations fit the present database with rms relative residuals of 21.1% and 24.4% for j and f multipliers, respectively. Alternatively, stand-alone Colburn j and f correlations give rms relative residuals of 22.7% and 29.1%, respectively.

Research on the Friction Performance of Bionic Surface Based on the Clamber Animal Foot Pad

2013 ◽  
Vol 427-429 ◽  
pp. 298-301
Author(s):  
Chun Jian Su ◽  
Zhou Yu Fu ◽  
Hui Sun ◽  
Xiao Shen
Keyword(s):  
Sliding Friction ◽  
External Surface ◽  
Surface Friction ◽  
Friction Mechanism ◽  
Micro Particles ◽  
Bionic Surface ◽  
Friction Performance ◽  
Foot Pad ◽  
The Mathematical Model ◽  
Center Distance

The clamber animal foot pads were researched by the Super Depth of Field3D Microscopic System marked VHX-600 and the flexible non-smooth surface friction mechanism of clamber animal foot pad was analysed through bionic tribology. The total friction includes two aspects: a) The sliding friction caused by the adsorbability between clamber animal foot pad and external surface. b) The embedding resistance caused by the external surface micro particles embedded into clamber animal foot pad. The mathematical model of single convex hull was built and the different center distance bionic surfaces were designed, the friction contact simulation of bionic surface was done by ANSYS and the friction performance of bionic surface was verified through the plane friction testbed.

scholarly journals Hydrological cycle

2011 ◽  
Vol 71 (1 suppl 1) ◽  
pp. 241-253 ◽  
Author(s):  
HC Gonçalves ◽  
MA Mercante ◽  
ET Santos
Keyword(s):  
Water Resources ◽  
Hydrological Cycle ◽  
Mato Grosso ◽  
Climate Conditions ◽  
Paraguay River ◽  
Rivers And Lakes ◽  
Drainage Capacity ◽  
The Relationship ◽  
Average Annual Precipitation ◽  
Very High

The Pantanal hydrological cycle holds an important meaning in the Alto Paraguay Basin, comprising two areas with considerably diverse conditions regarding natural and water resources: the Plateau and the Plains. From the perspective of the ecosystem function, the hydrological flow in the relationship between plateau and plains is important for the creation of reproductive and feeding niches for the regional biodiversity. In general, river declivity in the plateau is 0.6 m/km while declivity on the plains varies from 0.1 to 0.3 m/km. The environment in the plains is characteristically seasonal and is home to an exuberant and abundant diversity of species, including some animals threatened with extinction. When the flat surface meets the plains there is a diminished water flow on the riverbeds and, during the rainy season the rivers overflow their banks, flooding the lowlands. Average annual precipitation in the Basin is 1,396 mm, ranging from 800 mm to 1,600 mm, and the heaviest rainfall occurs in the plateau region. The low drainage capacity of the rivers and lakes that shape the Pantanal, coupled with the climate in the region, produce very high evaporation: approximately 60% of all the waters coming from the plateau are lost through evaporation. The Alto Paraguay Basin, including the Pantanal, while boasting an abundant availability of water resources, also has some spots with water scarcity in some sub-basins, at different times of the year. Climate conditions alone are not enough to explain the differences observed in the Paraguay River regime and some of its tributaries. The complexity of the hydrologic regime of the Paraguay River is due to the low declivity of the lands that comprise the Mato Grosso plains and plateau (50 to 30 cm/km from east to west and 3 to 1.5 cm/km from north to south) as well as the area's dimension, which remains periodically flooded with a large volume of water.

scholarly journals Effect of Oil Groove Depth on Friction Performance of Copper based Friction Materials with Different Graphite Content

2020 ◽  
Vol 571 ◽  
pp. 012149
Author(s):  
Jianhua Du ◽  
Nan Zhang ◽  
Zheng Hu ◽  
Keyan Ning ◽  
Wanhao Zhang ◽  
...  
Keyword(s):  
Groove Depth ◽  
Friction Materials ◽  
Graphite Content ◽  
Friction Performance
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