Analytical and experimental investigations of shear stress in rod bundles with irregular cells
Affiliation:
1. Lithuanian Energy Institute, Nuclear Installations Safety Laboratory, Breslaujos 3, LT-44403 Kaunas, Lithuania. E-mail:
Abstract
Abstract
The paper presents analytical and experimental investigations of shear stress on the rods of a bundle with irregular arrays. Simplified, however, effective methodologies are developed for thermal hydraulic processes (shear stress on the bundle rods' surfaces) along the multi-rod bundles. A single-vortex transfer gradient model is recommended taking into account the calculation results and a number of referenced experimental works. Analytical calculation methodologies of shear stress are based on ordinary differential equations and implemented in the computer codes RKN and RKN-M. Concurrently with the analytical investigations, experimental works were performed to determine the shear stress on the rods in a bundle with irregular cells. The results of the calculations are compared with experimental data.
Publisher
Walter de Gruyter GmbH
Subject
Safety, Risk, Reliability and Quality,General Materials Science,Nuclear Energy and Engineering,Nuclear and High Energy Physics,Radiation
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