Abstract
Methods for fast computing of thermal flux depressions and reactivities created by irradiation-loops in natural water reactors are studied in this report. The classical methods of approximation which have been used are: diffusion theory or absorption-probability calculations for the flux-depression and perturbation theory for the anti-reactivities. Pertinent formulae are compiled together with graphs from theoretical calculations. These formulae and graphs have been checked from numerous experiments which show that the approximations used here are quite close to the actual physical situation, even when the theories are based from assumptions which cannot be verified here. (author) [French] Ce rapport propose aux experimentateurs des piles a eau legere des methodes de determination rapide des depressions de flux thermique et antireactivites creees par les dispositifs d'irradiation. Les methodes classiques d'approximation sont utilisees, a savoir: theorie de diffusion ou calcul de probabilites d'absorption pour les depressions de flux, theorie des perturbations pour les antireactivites. Un formulaire pratique, accompagne d'abaques est deduit des calculs theoriques et verifie par de nombreuses experiences qui montrent que les evaluations faites sont tres proches de la realite, meme dans le cas ou les hypotheses relatives aux theories utilisees ne sont pas respectees. (auteur)
Roche, D
[1]
- Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Citation Formats
Roche, D.
Experimental study of flux depressions and anti-reactivities created by irradiation loops; Etude experimentale des depressions de flux et antireactivites creees par les dispositifs d'irradiation.
France: N. p.,
1967.
Web.
Roche, D.
Experimental study of flux depressions and anti-reactivities created by irradiation loops; Etude experimentale des depressions de flux et antireactivites creees par les dispositifs d'irradiation.
France.
Roche, D.
1967.
"Experimental study of flux depressions and anti-reactivities created by irradiation loops; Etude experimentale des depressions de flux et antireactivites creees par les dispositifs d'irradiation."
France.
@misc{etde_20626221,
title = {Experimental study of flux depressions and anti-reactivities created by irradiation loops; Etude experimentale des depressions de flux et antireactivites creees par les dispositifs d'irradiation}
author = {Roche, D}
abstractNote = {Methods for fast computing of thermal flux depressions and reactivities created by irradiation-loops in natural water reactors are studied in this report. The classical methods of approximation which have been used are: diffusion theory or absorption-probability calculations for the flux-depression and perturbation theory for the anti-reactivities. Pertinent formulae are compiled together with graphs from theoretical calculations. These formulae and graphs have been checked from numerous experiments which show that the approximations used here are quite close to the actual physical situation, even when the theories are based from assumptions which cannot be verified here. (author) [French] Ce rapport propose aux experimentateurs des piles a eau legere des methodes de determination rapide des depressions de flux thermique et antireactivites creees par les dispositifs d'irradiation. Les methodes classiques d'approximation sont utilisees, a savoir: theorie de diffusion ou calcul de probabilites d'absorption pour les depressions de flux, theorie des perturbations pour les antireactivites. Un formulaire pratique, accompagne d'abaques est deduit des calculs theoriques et verifie par de nombreuses experiences qui montrent que les evaluations faites sont tres proches de la realite, meme dans le cas ou les hypotheses relatives aux theories utilisees ne sont pas respectees. (auteur)}
place = {France}
year = {1967}
month = {Jul}
}
title = {Experimental study of flux depressions and anti-reactivities created by irradiation loops; Etude experimentale des depressions de flux et antireactivites creees par les dispositifs d'irradiation}
author = {Roche, D}
abstractNote = {Methods for fast computing of thermal flux depressions and reactivities created by irradiation-loops in natural water reactors are studied in this report. The classical methods of approximation which have been used are: diffusion theory or absorption-probability calculations for the flux-depression and perturbation theory for the anti-reactivities. Pertinent formulae are compiled together with graphs from theoretical calculations. These formulae and graphs have been checked from numerous experiments which show that the approximations used here are quite close to the actual physical situation, even when the theories are based from assumptions which cannot be verified here. (author) [French] Ce rapport propose aux experimentateurs des piles a eau legere des methodes de determination rapide des depressions de flux thermique et antireactivites creees par les dispositifs d'irradiation. Les methodes classiques d'approximation sont utilisees, a savoir: theorie de diffusion ou calcul de probabilites d'absorption pour les depressions de flux, theorie des perturbations pour les antireactivites. Un formulaire pratique, accompagne d'abaques est deduit des calculs theoriques et verifie par de nombreuses experiences qui montrent que les evaluations faites sont tres proches de la realite, meme dans le cas ou les hypotheses relatives aux theories utilisees ne sont pas respectees. (auteur)}
place = {France}
year = {1967}
month = {Jul}
}