Difference between revisions of "Coupled multi-physics calculations"

From Serpent Wiki
Jump to: navigation, search
(Power relaxation)
Line 2: Line 2:
  
 
== Iteration ==
 
== Iteration ==
 +
 +
== Multi-physics interface ==
 +
 +
See [[multi-physics interface]].
  
 
== Power relaxation ==
 
== Power relaxation ==

Revision as of 13:33, 3 December 2015

External coupling

Iteration

Multi-physics interface

See multi-physics interface.

Power relaxation

Serpent relaxes the power distribution calculated in the iterations using the stochastic approximation based method[1], where the power distribution at iteration n is calculated by

P_{\mathrm{rel}}^{n} = P_{\mathrm{rel}}^{n-1} - \frac{s_{n}}{\sum_{i = 1}^{n} s_{n}} d \left(P_{\mathrm{rel}}^{n-1} - P^{n}\right),

where P^{n} is the unrelaxed power distribution tallied on iteration n, P_{\mathrm{rel}}^{n-1} is the relaxed power distribution after the previous iteration, s_{i} is the active neutron population simulated on iteration i and d is an underrelaxation factor that can be defined by the set relfactor option.

Output