A coupled thermohydraulic/neutronic investigation of noise propagation in VVER-1000 reactor using<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mrow><mml:mi mathvariant="bold-italic">A</mml:mi><mml:msub><mml:mi mathvariant="bold-italic">l</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="bold-italic">O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> nanofluid coolant

Nourollahi, Reza; Esteki, Mohammad Hossein; Jahanfarnia, Gholamreza

doi:10.1016/j.pnucene.2020.103333

Cited by 2 publications

(1 citation statement)

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“…In recent studies, neutronic and thermal‐hydraulic noise analysis (Fourier transform) in the frequency domain in a VVER‐1000 reactor with Al 2 O 3 nanofluid were done by Nourollahi et al 144 It was observed that by increasing nanofluid concentration, fluctuations in coolant temperature and velocity reduced and core PPF was less influenced by inlet fluctuations.…”

Section: Nanofluid Applications In Pwrsmentioning

confidence: 99%

Nanofluid applications in pressurized water reactors: A review

Mirian

Ansarifar

Esteki

2022

Intl J of Energy Research

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Summary The main purpose of this paper was to review nanofluid applications as the main coolant of pressurized water reactors (PWRs) with both solid and dual‐cooled annular fuel. In this regard, first, theoretical and experimental models for calculating thermo‐physical properties of nanofluids including density, specific heat, thermal conductivity, viscosity, and heat transfer coefficient were reviewed and the effects of different variables such as particle volume concentration, particle size, shape, and temperature on these parameters were determined. In the following, research related to neutronic, thermal‐hydraulic, and safety investigations of nanofluids as the main coolant of PWRs with solid and dual‐cooled annular fuel were reviewed. Corresponding methods, codes, and results were discussed and compared. Based on studies, it was concluded that nanofluids' effects on key neutronic parameters (keff, neutron flux and radial and axial power peaking factor) depend on the used nanoparticle, volume concentration, and nanoparticle deposition on the cladding, while nanofluids can increase heat transfer, critical heat flux, and minimum departure from nuclear boiling ratio (MDNBR). Also, it was found that nanofluids with low volume concentration in reactor core with dual‐cooled annular fuel can replicate the same advantages. Furthermore, using dual‐cooled annular fuel instead of solid fuel increases MDNBR margin and reduces coolant flow which leads to a more compact design of the reactor core and a reduction of capital cost. Finally, incoming challenges and future works were presented.

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Section: Nanofluid Applications In Pwrsmentioning

confidence: 99%