Results 201 to 210 of about 629,295 (307)

Effect of Sand Particle Size on Sand–Water Flow in a Francis‐99 Distributor

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT To examine the sand–water flow characteristics in the distributor of the Francis‐99 hydraulic turbine, numerical simulations were conducted using the Mixture multiphase flow model, focusing on the impact of varying sand particle sizes. The findings indicate that near‐wall velocities of sand and water in the fixed and guide vanes of the ...
Ziyao Zhou   +7 more
wiley   +1 more source

Research and Experimental Verification of the Dynamic Pose Analysis Method of Advanced Hydraulic Support in a Fully Mechanized Mining Face

open access: yesEnergy Science &Engineering, EarlyView.
The advanced hydraulic support is modeled as a closed‐loop 10‐degree‐of‐freedom robotic arm. Based on the improved D–H parameter method, forward kinematic analysis is performed under left and right column driving conditions, and a follower model is constructed considering mechanical constraints.
Zhang Kun   +12 more
wiley   +1 more source

Numerical Calculation of the Influence of Working Conditions and Rotational Speed on Pressure Pulsation of a Self‐Priming Pump

open access: yesEnergy Science &Engineering, EarlyView.
To accurately determine the pressure fluctuation characteristics of a specific self‐priming pump, a full three‐dimensional computational model was established, including the S‐tube, impeller domain, volute domain, gas‐liquid separation chamber, front and rear cavities, wear ring clearance, and reflux hole.
Hai‐Bing Jiang   +5 more
wiley   +1 more source

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