Numerical simulation of two-dimensional fractional neutron diffusion model describing dynamical behaviour of sodium-cooled fast reactor

2022 ◽  
Vol 166 ◽  
pp. 108709
Author(s):  
Pradip Roul ◽  
Vikas Rohil ◽  
Gilberto Espinosa-Paredes ◽  
K. Obaidurrahman
Keyword(s):  
Numerical Simulation ◽  
Diffusion Model ◽  
Fast Reactor ◽  
Dynamical Behaviour ◽  
Neutron Diffusion ◽  
Two Dimensional

Experimental and numerical investigation of a forced circular shear layer

1988 ◽  
Vol 187 ◽  
pp. 115-140 ◽  
Author(s):  
J. M. Chomaz ◽  
M. Rabaud ◽  
C. Basdevant ◽  
Y. Couder
Keyword(s):  
Numerical Simulation ◽  
Aspect Ratio ◽  
Shear Flow ◽  
Shear Layer ◽  
Flow Instability ◽  
Dynamical Behaviour ◽  
Small Cells ◽  
Stationary States ◽  
Two Dimensional ◽  
Shear Flow Instability

In a previous article we introduced a dissipative circular geometry in which stationary states of the shear flow instability were obtained. We show here that the dynamical behaviour of this flow depends strongly on the aspect ratio of the cell. In large cells, where the number of vortices is large, transitions from a mode with m vortices to a mode with (m−1) vortices occur through localized processes. In contrast to that situation, in small cells, transition takes place after a series of bifurcations which correspond to the successive breaking of all the symmetries of the flow.We show that, provided an adequate forcing term is introduced, a two-dimensional numerical simulation of this flow is sufficient to recover all the dynamical processes which characterize the experimental flow.

Comparison of calculations of a two-dimensional model of a fast reactor

1980 ◽  
Vol 48 (6) ◽  
pp. 353-356 ◽  
Author(s):  
A. I. Voropaev ◽  
O. P. Chukhlova ◽  
A. A. Van'kov ◽  
L. N. Kudryashov ◽  
R. V. Nikol'skii
Keyword(s):  
Fast Reactor ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Two Dimensional Model
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