Effect of the Reorientation of Oxyethylated Alcohol Molecules within the Surface Layer on Equilibrium and Dynamic Surface Pressure

Langmuir ◽  
1999 ◽  
Vol 15 (4) ◽  
pp. 1328-1336 ◽  
Author(s):  
R. Miller ◽  
E. V. Aksenenko ◽  
L. Liggieri ◽  
F. Ravera ◽  
M. Ferrari ◽  
...  
Keyword(s):  
Surface Layer ◽  
Surface Pressure ◽  
Dynamic Surface

Dynamic Surface Pressure Based Estimation for Flow Control

2008 ◽  
pp. 183-189 ◽  
Author(s):  
Lawrence Ukeiley ◽  
Nathan Murray ◽  
Qi Song ◽  
Louis Cattafesta
Keyword(s):  
Flow Control ◽  
Surface Pressure ◽  
Dynamic Surface

scholarly journals WRF Model Experiments on the Antarctic Atmosphere in Winter

2011 ◽  
Vol 139 (4) ◽  
pp. 1279-1291 ◽  
Author(s):  
Esa-Matti Tastula ◽  
Timo Vihma
Keyword(s):  
Boundary Layer ◽  
Surface Layer ◽  
Wind Speed ◽  
Surface Pressure ◽  
Mesoscale Model ◽  
Wrf Model ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Temperature Bias ◽  
Radiation Parameterizations

Abstract The standard and polar versions 3.1.1 of the Weather Research and Forecasting (WRF) model, both initialized by the 40-yr ECMWF Re-Analysis (ERA-40), were run in Antarctica for July 1998. Four different boundary layer–surface layer–radiation scheme combinations were used in the standard WRF. The model results were validated against observations of the 2-m temperature, surface pressure, and 10-m wind speed at 9 coastal and 2 inland stations. The best choice for boundary layer and radiation parameterizations of the standard WRF turned out to be the Yonsei University boundary layer scheme in conjunction with the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) surface layer scheme and the Rapid Radiative Transfer Model for longwave radiation. The respective temperature bias was on the order of 3°C less than the biases obtained with the other combinations. Increasing the minimum value for eddy diffusivity did, however, improve the performance of the asymmetric convective scheme by 0.8°C. Averaged over the 11 stations, the error growths in 24-h forecasts were almost identical for the standard and Polar WRF, but in 9-day forecasts Polar WRF gave a smaller 2-m temperature bias. For the Vostok station, however, the standard WRF gave a less positively biased 24-h temperature forecast. On average, the polar version gave the least biased surface pressure simulation. The wind speed simulation was characterized by low correlation values, especially under weak winds and for stations surrounded by complex topography.

Dynamic surface-pressure instrumentation for rods in parallel flow

1982 ◽  
Vol 22 (1) ◽  
pp. 31-36 ◽  
Author(s):  
T. M. Mulcahy ◽  
W. Lawrence ◽  
M. W. Wambsganss
Keyword(s):  
Surface Pressure ◽  
Parallel Flow ◽  
Dynamic Surface

Dynamic Surface Layer Coiled Coil Proteins Processing Analog-to-Digital Information

2021 ◽  
Author(s):  
Chiara Glionna ◽  
Vinod Kumar ◽  
Guillaume Le Saux ◽  
Bapan Pramanik ◽  
Nathaniel Wagner ◽  
...  
Keyword(s):  
Surface Layer ◽  
Coiled Coil ◽  
Digital Information ◽  
Dynamic Surface ◽  
Analog To Digital

scholarly journals Influence of Shot Peening on Abrasion Wear in Real Conditions of Ni-Cu-Ausferritic Ductile Iron

2016 ◽  
Vol 61 (4) ◽  
pp. 1985-1990
Author(s):  
A. N. Wieczorek
Keyword(s):  
Surface Layer ◽  
Abrasive Wear ◽  
Ductile Iron ◽  
Shot Peening ◽  
Residual Austenite ◽  
Wear Properties ◽  
Surface Layers ◽  
Cast Irons ◽  
Dynamic Surface ◽  
The Impact

Abstract The paper presents results of the wear tests of chain wheels made of austempered ductile iron with various content of residual austenite. The aim of this study was to demonstrate the impact of the dynamic surface treatment (shot peening) on wear properties of surface layers of the chain wheels tested that were subjected to the action of quartz abrasive. Apart from determining the value of the abrasive wear, examinations of the magnetic phase content in the microstructure were carried out and plots of hardness of the surface layer as a function of the distance from the surface and microstructure of the materials were prepared. Based on the results, the following was found: an increase in the abrasive wear and a reduction in the hardness of the surface layer of chain wheels subjected to shot peening, as well as reduction of susceptibility to negative action of the shot for cast irons with the structure of upper ausferrite.

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