<i>Experimental Study on the Correlation between Shear Characteristic and Physical Parameters of Paddy Soil in Plastic State</i>

2018 ◽  
Author(s):  
Ming Cao ◽  
Yongwei Wang ◽  
Jun Wang ◽  
Zhuoliang He ◽  
Xifeng Liang
Keyword(s):  
Experimental Study ◽  
Paddy Soil ◽  
Plastic State ◽  
Physical Parameters ◽  
Shear Characteristic

Experimental Study of Low Concentration Sand Transport in Multiphase Air–Water Horizontal Pipelines

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Kamyar Najmi ◽  
Alan L. Hill ◽  
Brenton S. McLaury ◽  
Siamack A. Shirazi ◽  
Selen Cremaschi
Keyword(s):  
Experimental Study ◽  
Gas Flow ◽  
Intermittent Flow ◽  
Sand Transport ◽  
Physical Parameters ◽  
Internal Diameter ◽  
Flow Rates ◽  
Minimum Flow ◽  
Wide Range ◽  
Sand Size

The ultimate goal of this work is to determine the minimum flow rates necessary for effective transport of sand in a pipeline carrying multiphase flow. In order to achieve this goal, an experimental study is performed in a horizontal pipeline using water and air as carrier fluids. In this study, successful transport of sand is defined as the minimum flow rates of water and air at which all sand grains continue to move along in the pipe. The obtained data cover a wide range of liquid and gas flow rates including stratified and intermittent flow regimes. The effect of physical parameters such as sand size, sand shape, and sand concentration is experimentally investigated in 0.05 and 0.1 m internal diameter pipes. The comparisons of the obtained data with previous studies show good agreement. It is concluded that the minimum flow rates required to continuously move the sand increases with increasing sand size in the range examined and particle shape does not significantly affect sand transport. Additionally, the data show the minimum required flow rates increase by increasing sand concentration for the low concentrations considered, and this effect should be taken into account in the modeling of multiphase sand transport.

Experimental study of the thermo-physical parameters of a free elementary convective cell

2016 ◽  
Vol 19 (4) ◽  
pp. 25-35
Author(s):  
L. Bozbey ◽  
◽  
A. Kostikov ◽  
N. Kurskaya ◽  
V. Tkachenko ◽  
...  
Keyword(s):  
Experimental Study ◽  
Convective Cell ◽  
Physical Parameters

scholarly journals The importance of physical parameters for the penetration depth of impregnation products into cementitious materials: Modelling and experimental study

2020 ◽  
Vol 257 ◽  
pp. 119595
Author(s):  
Janez Perko ◽  
Rafael Zarzuela ◽  
Inés Garcia-Lodeiro ◽  
María Teresa Blanco-Varela ◽  
Maria J. Mosquera ◽  
...  
Keyword(s):  
Experimental Study ◽  
Penetration Depth ◽  
Cementitious Materials ◽  
Physical Parameters ◽  
Materials Modelling

Experimental study of physical parameters of semiconductor lasers

1997 ◽  
Author(s):  
Gleb E. Shtengel ◽  
Paul A. Morton ◽  
Rudolf F. Kazarinov ◽  
David A. Ackerman ◽  
Mark S. Hybertsen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Semiconductor Lasers ◽  
Physical Parameters

Experimental Study on Unsynchronized Ultrasonic Assistance of Electro Discharge Machining Process

2014 ◽  
Vol 657 ◽  
pp. 241-245
Author(s):  
Sergiu Nanu ◽  
Niculae Marinescu ◽  
Daniel Ghiculescu
Keyword(s):  
Experimental Study ◽  
Electrical Discharge Machining ◽  
Machining Process ◽  
Plastic State ◽  
Technological Parameters ◽  
Workpiece Material ◽  
Electrode Tool ◽  
Working Parameters ◽  
Experimental Data Analysis ◽  
Edm Process

The paper deals with experimental study on unsynchronised (out of phase) ultrasonic assistance (US) of electrical discharge machining (EDM) process, considering finishing and semi-finishing operations. The main output technological parameters at classic EDM are not as good as they are expected due to instability of material removal process and long duration of gas bubble formed around plasma channel. The US longitudinal oscillations of electrode-tool produce cavitation within frontal working gap leading to collective implosion of gas bubbles. This hydraulic phenomenon can remove the workpiece material in solid or plastic state or even in liquid state. The goal of our study is to emphasize and quantify the influence of US assistance into EDM process and also to determine a correlation between EDM and US parameters, considering an unsynchronised condition. Nevertheless some optimization conditions of working parameters are needed to attain notable expected performances. From experimental data analysis, it can be noticed that significant growth in process productivity is achieved when EDM process frequency is equal with the ultrasonic assistance frequency.

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