Assessment of turbulence models for cfd simulation of partial flow blockage in nuclear fuel rod bundles using logos

Jamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, Juraev , Sherzod

Innovations in Science and Technologies · 2026-yil

Annotatsiya

Accurate prediction of coolant flow behavior in nuclear fuel rod bundles under partial flow blockage is essential for reactor safety analysis. This study validates the CFD code LOGOS through simulation of hydrodynamic processes in a 61-rod bundle based on MONJU experimental configurations. Numerical results were compared with experimental velocity measurements to assess turbulence model performance. Calculations were performed using the standard k-ε model and the Explicit Algebraic Reynolds Stress Model (EARSM). The k-ε model reproduces general flow characteristics but fails to adequately predict the recirculation region downstream of the blockage. The EARSM model shows significantly improved agreement with experimental data, particularly in capturing reverse flow behavior. Statistical evaluation confirms higher predictive accuracy of the Reynolds stress–based approach. The results demonstrate the importance of turbulence model selection for reliable CFD-based safety assessment of nuclear fuel assemblies.

Maqola ma’lumotlari
MualliflarJamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, Juraev , Sherzod
JurnalInnovations in Science and Technologies
NashriyotТошкент давлат иқтисодиёт университети
ISSN3030-3451
Nashr sanasi2026-02-23
Jild3
Son2
Betlar129-139
TilIngliz
Ilmiy sohaIqtisodiyot
Indeksga qo‘shilgan2026-08-26

Maqolaning asl sahifasi

Kalit so‘zlar

CFD, LOGOS, nuclear fuel assembly, partial flow blockage, turbulence modeling, EARSM, rod bundle flow, validation.

Ilmiy soha

Iqtisodiyot

Iqtibos keltirish

APAJamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, & Juraev , Sherzod (2026). ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS. Innovations in Science and Technologies, 3(2), 129-139. https://innoist.uz/index.php/ist/article/view/1465
GOST (OAK)Jamoldinov , Fozilbek va b. ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS // Innovations in Science and Technologies. – 2026. – T. 3, № 2. – P. 129-139.
MLAJamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, and Juraev , Sherzod. “ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS.” Innovations in Science and Technologies, 3(2), 129-139, 2026. https://innoist.uz/index.php/ist/article/view/1465
ChicagoJamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, and Juraev , Sherzod. “ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS.” Innovations in Science and Technologies, 3(2), 129-139 (2026). https://innoist.uz/index.php/ist/article/view/1465
HarvardJamoldinov , Fozilbek, Umarvayev , Khasan, Khoshimjonov , Khurshidbek, and Juraev , Sherzod (2026) ‘ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS’, Innovations in Science and Technologies, 3(2), 129-139. https://innoist.uz/index.php/ist/article/view/1465
BibTeX
@article{jamoldinovfozilbek2026,
  title = {ASSESSMENT OF TURBULENCE MODELS FOR CFD SIMULATION OF PARTIAL FLOW BLOCKAGE IN NUCLEAR FUEL ROD BUNDLES USING LOGOS},
  author = {Jamoldinov , Fozilbek and Umarvayev , Khasan and Khoshimjonov , Khurshidbek and Juraev , Sherzod},
  journal = {Innovations in Science and Technologies},
  year = {2026},
  volume = {3},
  number = {2},
  pages = {129-139},
  url = {https://innoist.uz/index.php/ist/article/view/1465}
}

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