Numerical investigation on the drag characteristics of supercritical water flow past a sphere

2020 ◽  
Vol 63 (8) ◽  
pp. 1509-1519 ◽  
Author(s):  
ZhenQun Wu ◽  
GuoBiao Ou ◽  
YiFei Ren ◽  
Hui Jin
Keyword(s):  
Numerical Investigation ◽  
Water Flow ◽  
Supercritical Water ◽  
Flow Past ◽  
Flow Past A Sphere

scholarly journals Investigation on the drag coefficient of supercritical water flow past sphere-particle at low reynolds numbers

2017 ◽  
Vol 21 (suppl. 1) ◽  
pp. 217-223 ◽  
Author(s):  
Zhenqun Wu ◽  
Hui Jin ◽  
Leijin Guo
Keyword(s):  
Reynolds Number ◽  
Drag Coefficient ◽  
Fluidized Bed ◽  
Water Flow ◽  
Supercritical Water ◽  
Single Particle ◽  
Ambient Conditions ◽  
Particle Cluster ◽  
Drag Coefficients ◽  
Flow Past

Supercritical water fluidized bed is novel reactor for the efficient gasification of coal to produce hydrogen. The Euler-Euler and Euler-Lagrange methods can be used to simulate the flow behaviors supercritical water fluidized bed. The accuracy of the simulated results with the two methods has a great dependence on the drag coefficient model, and there is little work focused on the study on particle?s drag force in supercritical water. In this work, the drag coefficients of supercritical water flow past a single particle and particle cluster. The simulated results show that the flow field and drag coefficient of single particle at supercritical condition have no difference to that at ambient conditions when the Reynolds number is same. For the two-particles model, a simplification of particle cluster, the drag coefficients of the two particles are identical at different conditions for the same Reynolds number. The variation characteristics with the Reynolds number and particles? positions are also same.

Flow past a sphere in density-stratified fluid

2004 ◽  
Vol 18 (2-4) ◽  
pp. 265-276 ◽  
Author(s):  
Sungsu Lee ◽  
Kyung-Soo Yang
Keyword(s):  
Stratified Fluid ◽  
Flow Past ◽  
Flow Past A Sphere
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