Bandgap characteristics of phononic crystals in steady and unsteady flows

2020 ◽  
Vol 148 (3) ◽  
pp. 1181-1192
Author(s):  
Tae Seok Oh ◽  
Wonju Jeon
Keyword(s):  
Unsteady Flows ◽  
Phononic Crystals ◽  
Steady And Unsteady Flows

On nonlocal fractal laminar steady and unsteady flows

2021 ◽  
Vol 232 (4) ◽  
pp. 1413-1424
Author(s):  
Rami Ahmad El-Nabulsi
Keyword(s):  
Unsteady Flows ◽  
Steady And Unsteady Flows

Design of Choking Cavitator and its Feasibility Study in Wastewater Treatment

2014 ◽  
Vol 535 ◽  
pp. 298-308
Author(s):  
Feng Hua Zhang ◽  
Nian Li ◽  
Chuan Lin Tang
Keyword(s):  
Circular Tube ◽  
Unsteady Flows ◽  
Cavitation Noise ◽  
Straight Pipe ◽  
Cylindrical Pipe ◽  
Phenol Solution ◽  
New Approach ◽  
Operating Limits ◽  
Simulated Wastewater ◽  
Steady And Unsteady Flows

A new cavitator-choking cavitator is designed on the basis of analyzing the choking cavitation phenomena that occurs in gas-liquid mixed flow of straight pipe ,in jet pump under operating limits and in steady adiabatic flashing flow of stepped circular tube as well as in a cylindrical pipe with a sharp edged-corner for the steady and unsteady flows. The feasibility preliminary research of choking cavitator is carried out with analysis the signals of cavitation noise and treating simulated wastewater (phenol solution). The results offers a new approach in cavitator development field at home and abroad because of the effect that treating simulated wastewater with choking cavitator is preferable,and the cavitation per energy produced by choking cavitator is higher than that by self-oscillated chamber nozzle.

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