A FRACTAL PRESSURE DROP MODEL FOR CABLE-IN-CONDUIT CONDUCTORS BASED ON POROUS MEDIA ANALOGY

Autor:	Yuanwen Gao, Zhicai Ma
Rok vydání:	2021
Předmět:	Pressure drop Materials science Applied Mathematics chemistry.chemical_element Mechanics Physics::Fluid Dynamics Fractal Electrical conduit chemistry Modeling and Simulation Geometry and Topology Porous medium Electrical conductor Helium
Zdroj:	Fractals. 29
ISSN:	1793-6543 0218-348X
DOI:	10.1142/s0218348x21502078
Popis:	Assessment of the pressure drop that occurs in cable-in-conduit conductors (CICCs) requires a reliable predictive model. In this paper, a fractal model to predict the pressure drop of helium flows in CICCs is proposed based on the porous media analogy and fractal theory. A fractal friction factor correlation is also derived using the proposed pressure drop model. The good agreement between the predictions and the experimental data for conductors with [Formula: see text] verifies the validity of both the fractal pressure drop model and the friction factor correlation for such configuration conductors. The fractal correlation indicates that the friction factor of the cable bundle in a CICC is related not only to the void fraction but also to the average hydraulic diameter, the tortuosity of the fluid flow paths, the maximum pore size and the fractal dimension of the cable cross-section. This theoretical correlation does not contain any fitting constants and each parameter has a clear physical meaning.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::17e6a9904ffd5649ea1a4d424727da88 https://doi.org/10.1142/s0218348x21502078 Zobrazit plný text záznamu