2024 : 12 : 13
Iman Esmaili Paeen Afrakoti

Iman Esmaili Paeen Afrakoti

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Faculty of Technology and Engineering
Address: Engineering & Technology Department, University of Mazandaran, Pasdaran Street, Babolsar, Iran
Phone: 01135305134

Research

Title
Adaptive group of ink drop spread: a computer code to unfold neutron noise sources in reactor cores
Type
JournalPaper
Keywords
AGIDS,Neutron Noise,Noise source, Unfolding, Vibrating Absorber
Year
2017
Journal Nuclear Engineering and Technology
DOI
Researchers Seyed Abolfazl Hosseini ، Iman Esmaili Paeen Afrakoti

Abstract

The present paper reports the development of a computational code based on the Adaptive Group of Ink Drop Spread (AGIDS) for reconstruction of the neutron noise sources in reactor cores. AGIDS algorithm was developed as a fuzzy inference system based on the active learning method. The main idea of the active learning method is to break a multiple inputesingle output system into a single inputesingle output system. This leads to the ability to simulate a large system with high accuracy. In the present study, vibrating absorber-type neutron noise source in an International Atomic Energy Agency-two dimensional reactor core is considered in neutron noise calculation. The neutron noise distribution in the detectors was calculated using the Galerkin finite element method. Linear approximation of the shape function in each triangle element was used in the Galerkin finite element method. Both the real and imaginary parts of the calculated neutron distribution of the detectors were considered input data in the developed computational code based on AGIDS. The output of the computational code is the strength, frequency, and position (X and Y coordinates) of the neutron noise sources. The calculated fraction of variance unexplained error for output parameters including strength, frequency, and X and Y coordinates of the considered neutron noise sources were 0.002682 #/cm3s, 0.002682 Hz, and 0.004254 cm and 0.006140 cm, respectively.