The fuel element of LMFBR consists of a bundle of rods wrapped with an helical wire as spacer, surrounded by an hexagonal duct. In the present work, a semi-empirical model is developed to calculate bundle average and subchannel based friction factors and flow redistribution. The obtained results were compared to experimental data and they were considered satisfactory for wide range of geometrical parameters
An experimental investigation is performed in a turbulent flow in a seven wire-wrapped rod bundle, mounted in an open air facility. Static pressure distributions are measured on central and peripheral rods. By using a Preston tube, the wall shear stress profiles are experimentally obtained along the perimeter of the rods. The geometric parameters of the test section are P/D=1.20 and H/D=15. The measuring section is located at L/D=40 from the air inlet. It is observed that the dimensionless static pressure and wall shear stress profiles are nearly independent of the Reynolds number and strongly dependent of the wire-spacer position, with abrupt variations of the parameters in the neighborhood of the wires
PurposeThe aim of this paper is to propose an integrated model for intangible resources, which will contribute to breaking down the old paradigm, and bring it to managers' attention that the best returns are likely to come from intangible resources.Design/methodology/approachThe theoretical approach is based on the concept of core competencies as defined by Hamel and Prahalad, and further developed in Andriessen's Making Sense of Intellectual Capital. It also explores the benchmarking concept presented in Viedma's “Intellectual capital benchmarking system”.FindingsBusiness practitioners and scholars have been developing new methods and models to understand intellectual capital. Unfortunately, these methods and models present a view on both tangible and intangible resources of an organisation that is non‐integrated and reinforces the traditional management focus on tangible assets only.Research limitations/implicationsThe method proposed here is being prepared to be tested in a large energy company under a three‐phase project (the object of future papers).Originality/valueThe paper describes a model and introduces a method based on it.
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