Fra. Lima et al., SENSITIVITY ANALYSIS OF THERMOHYDRAULIC SYSTEMS VIA HEURISTIC GENERALIZED PERTURBATION-THEORY (HGPT) METHODS, Annals of nuclear energy, 20(10), 1993, pp. 679-690
After recalling the basic principles of the heuristically based genera
lized perturbation theory (HGPT) its application to the sensitivity an
alysis in the thermohydraulic field is described, basing on the physic
al model used in COBRA IV Code.The methodology is applied to a number
of significant cases. The results show the validity of the method and
its unique role in drastically reducing the calculation time. In all c
ases the sensitivity coefficients so obtained resulted in very good ag
reement with respect to the values calculated via direct calculations.