Rod bundle thermal-hydraulics experiment with water and water-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si65.svg"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> nanofluid for small modular reactor

Bhowmik, Palash K.; Shamim, Jubair A.; Chen, Xiangyi; Suh, Kune Y.

doi:10.1016/j.anucene.2020.107870

Cited by 21 publications

(3 citation statements)

References 49 publications

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“…Choi 20 first made these modern fluids and called them NFs. After the introduction of NFs and their amazing thermal properties, much research was done on their performance in diverse applications such as thermal management of electronic components 21 , 22 and photovoltaic panels 23 , 24 , nuclear applications 25 , 26 , and performance improvement of solar thermal collectors 27 – 29 , heat exchangers 30 – 32 and car radiators 33 – 35 . The literature inspection shows that the performance of thermal systems with NF coolants equipped with turbulators was investigated by various researchers.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Baghaei

Suksatan

et al. 2022

Sci Rep

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This study is devoted to the numerical assessment of the influence of helical baffle on the hydrothermal aspects and irreversibility behavior of the turbulent forced convection flow of water-CuO nanofluid (NF) inside a hairpin heat exchanger with 100 mm length, 10 mm inner tube internal diameter, and 15 mm outer diameter internal diameter. The variations of the first-law and second-law performance metrics are investigated in terms of Reynolds number (Re = 5000–10,000), volume concentration of NF ($$\varphi =0-4\mathrm{\%}$$ φ = 0 - 4 % ) and baffle pitch (B = 25–100 mm). The results show that the NF Nusselt number grows with the rise of both the Re and $$\varphi$$ φ whereas it declines with the rise of B. In addition, the outcomes depicted that the rise of both Re and $$\varphi$$ φ results in the rise of pressure drop, while it declines with the increase of B. Moreover, it was found that the best thermal performance of NF is equal to 1.067, which belongs to the case B = 33.3 mm, $$\varphi$$ φ =2%, and Re = 10,000. Furthermore, it was shown that irreversibilities due to fluid friction and heat transfer augment with the rise of Re while the rise of B results in the decrease of frictional irreversibilities. Finally, the outcomes revealed that with the rise of B, the heat transfer irreversibilities first intensify and then diminish.

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Baghaei

Suksatan

et al. 2022

Sci Rep

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“…The safety of a nuclear reactor is of utmost importance, as its design must take all possible scenarios into account-including normal operation, design-basis accidents (DBAs), and beyond-design-basis accidents (BDBAs). The coupling of thermal, neutronic, and structural systems must be carefully considered when setting design limits to ensure the reactor remains safe and stable under all conditions [9]. The reactor also must be designed with multiple barriers to prevent the release of radioactive materials and general safety criteria must be established to ensure the integrity of these barriers and minimize the risk of harm to people and the environment.…”

Section: Introductionmentioning

confidence: 99%

Advances in Integral and Separate Effects Experiments for Water-Cooled Small Modular Reactors

Bhowmik,

Piyush,

Johnson

et al. 2023

20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20)

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This paper focuses on the progress being made in water-cooled small modular reactor (SMR) advanced integral effects and separate effects experiments for reactor licensing. SMRs, considered modular in design, are mostly factory-built and then shipped to the reactor site. Of the several types of SMR designs available, water-cooled SMRs are likely to receive regulatory approval faster than others, as most of the technologies involved (e.g., the fuel and coolant technologies) are matured. However, the unique safety systems of SMRs, which depend on specific SMR design features, require integral and separate effects experiments to achieve reactor licensing. Thus, of the many SMR designs being proposed, only a few have successfully undergone licensing and reached the final development and demonstration stage. Many nuclear vendors and newcomer companies are investing millions of dollars to develop integral and separate effects testing facilities for preparing final safety analysis reports to include in licensing applications. Development and analysis of these experimental facilities is costly and takes about four to five years. The unique challenges involved can be reduced when stakeholders synergistically apply lessons learned, knowing the critical role played by advancements in experiments that support the licensing of SMR safety systems. Identification of knowledge/research gaps with the phenomena identification and ranking table (PIRT) and designing experimental facilities focusing on the phenomena of interest (POI) and figures of merit (FOMs) are pivotal to select the critical path to successful design demonstration and licensing application. KEYWORDSIntegral effects test (IET), separate effect test (SET), scaling, small modular reactor (SMR)

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“…The additional safety requirements make the commercial reactors costly. Therefore, the nuclear industry is prioritizing the design and development of small modular reactors (SMRs) with increased safety and lower costs than the traditional reactors (IAEA, 2018;Bhowmik et al, 2021aBhowmik et al, , 2021bBhowmik et al, , 2021c.…”

Section: Introductionmentioning

confidence: 99%

CFD validation of condensation heat transfer in scaled-down small modular reactor applications, Part 2: Steam and non-condensable gas

Bhowmik

Schlegel

Kalra

et al. 2021

Exp. Comput. Multiph. Flow

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This paper presents the computational fluid dynamics (CFD) validation and scaling assessment of the condensation heat transfer (CHT) models in the presence of non-condensable gas for the passive containment cooling system (PCCS) of the small modular reactor (SMR). The STAR-CCM+ software with 3D scaled-down SMR containment geometries was used in CFD simulations with steam and non-condensable gas (NCG). The limitations and approximations of the previous studies were resolved to avoid scaling distortion and uncertainties. Air was used as the NCG gas with steam. The multi-component gas model was used to define the steam-NCG mixture, and the condensation-seed parameter was used as the source term for the fluid film model. Three different turbulence models were used to check the heat flux performances and temperature distributions on the coolant side. The heat flux was estimated from the axial coolant bulk temperature, which was identical to the test data reduction method. An implicit-unsteady numerical solver was applied to the conjugate heat transfer models between the gas, liquid, and solid regions. Detailed simulations were performed, and simulation results were validated with the measured parameters experimentally. The condensation heat transfer performance was quantified using non-dimensional numbers and compared for different scaled geometries to identify the scaling distortions.

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Rod bundle thermal-hydraulics experiment with water and water-Al2O3 nanofluid for small modular reactor

Cited by 21 publications

References 49 publications

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

RETRACTED ARTICLE: Numerical assessment of the influence of helical baffle on the hydrothermal aspects of nanofluid turbulent forced convection inside a heat exchanger

Advances in Integral and Separate Effects Experiments for Water-Cooled Small Modular Reactors

CFD validation of condensation heat transfer in scaled-down small modular reactor applications, Part 2: Steam and non-condensable gas

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