Effect of surface material and roughness on conductance of channel between parallel disks at molecular flow

2010 ◽  
Vol 28 (4) ◽  
pp. 937-941 ◽  
Author(s):  
Hajime Yoshida ◽  
Masanori Shiro ◽  
Kenta Arai ◽  
Masahiro Hirata ◽  
Hitoshi Akimichi
Keyword(s):  
Molecular Flow ◽  
Surface Material ◽  
Parallel Disks ◽  
Effect Of Surface

Water Film Depth Prediction Model for Highly Textured Pavement Surface Drainage

2021 ◽  
pp. 036119812110363
Author(s):  
Alireza Pourhassan ◽  
Ahmed A. Gheni ◽  
Mohamed A. ElGawady
Keyword(s):  
Prediction Model ◽  
Water Film ◽  
Crumb Rubber ◽  
Surface Material ◽  
Textured Surfaces ◽  
Road Traffic Safety ◽  
Material Type ◽  
Chip Seal ◽  
On Chip ◽  
Effect Of Surface

Water film depth (WFD) is an important factor for road traffic safety because of its direct connection with skid resistance, hydroplaning speed, and the tendency of splash and spray. Increasing the pavement macrotexture reduces WFD. However, existing models for WFD prediction have not been developed on highly textured surfaces such as chip seal. Furthermore, the rainfall intensities used for developing most of these models were relatively low, leaving no or low WFD on chip seal surfaces. To propose a WFD prediction model suitable for highly textured surfaces and to consider the effect of surface material type, an experimental study was conducted with 154 different combinations of mean texture depth (MTD), surface material type, surface slope, drainage length, and rainfall intensity. The tests were carried out on chip seal specimens using a full-scale rainfall simulator. Test results from 1,784 WFD readings indicated that the Gallaway and PAVDRN models were not accurate for highly textured surfaces used in this study with MTD ranging from 0.05 to 0.20 in. Two experimental models were, therefore, proposed to predict the WFD; both models displayed a significantly higher correlation between the measured and predicted WFD compared with the existing models. Furthermore, the eco-friendly rubberized chip seal showed an enhanced drainage capability compared with conventional chip seal, especially in low slopes, because of the hydrophobic nature of crumb rubber versus the hydrophilic character of mineral aggregates. Accordingly, the proposed model incorporated a term to consider the effect of surface material type.

scholarly journals Real world colour constancy - the effect of surface material

2012 ◽  
Vol 12 (9) ◽  
pp. 951-951
Author(s):  
A. Werner ◽  
L. Zebrowski
Keyword(s):  
Real World ◽  
Surface Material ◽  
Colour Constancy ◽  
Effect Of Surface

Effect of Surface Material on Spatiotemporal Structure in O$_{\bf 2}$ RF Glow Discharge

1995 ◽  
Vol 34 (Part 1, No. 11) ◽  
pp. 6230-6236 ◽  
Author(s):  
Mari Shibata ◽  
Toshiaki Makabe ◽  
Nobuhiko Nakano
Keyword(s):  
Glow Discharge ◽  
Surface Material ◽  
Spatiotemporal Structure ◽  
Rf Glow Discharge ◽  
Effect Of Surface
Sign in / Sign up

Export Citation Format

Share Document