Neutronic simulation of water-based nanofluids as a coolant in VVER-1000 reactor

Zarifi, Ehsan; Jahanfarnia, Gholamreza; Veysi, Farzad

doi:10.1016/j.pnucene.2013.01.004

Cited by 18 publications

(7 citation statements)

References 3 publications

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“…It should be noted that in the con trary with PWR, the cool ant and mod er a tor in CANDU-6 re ac tor are phys ically sep a rated. There fore the over all neutronic ef fect of ap ply ing a nanofluid cool ant in CANDU-6 is less; thus, a higher vol ume per cent age of nanoparticle can be used (1 % in CANDU-6 in stead of 0.1 % in PWR) [5].…”

Section: Discussionmentioning

confidence: 99%

“…In fact, en hancement of the crit i cal heat flux (CHF) is the main fac tor which en cour ages the de sign ers and/or re search ers to in ves ti gate dif fer ent as pects of ap ply ing a nanofluid in the con ven tional sys tems. Yet, there have been done a num ber of stud ies about ap ply ing a wa ter base nanofluid as cool ant in pres sur ized wa ter rec tors (PWR) [5].…”

Section: Introductionmentioning

confidence: 99%

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Neutronic simulation of a CANDU-6 reactor with heavy water-based nanofluid coolant

2017

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In re cent years, ex tended stud ies are de vel oped for in ves ti ga tion the ef fects of us ing nanofluids in NPP as cool ant. CANDU-6 re ac tors have the po ten tial to use nanofluid coolants be cause in these re ac tors, the mod er a tor sys tem is fully in de pend ent of the pri mary heat trans port sys tem. MCNPX code has been used for mod el ling and sim u la tion of a CANDU-6 re ac tor con tain ing a nanofluid as pri mary cool ant. The vari a tion of mul ti pli ca tion fac tor and to tal neu tron flux dis tri bu tion along a fuel chan nel, next to the cen tral axis, has been in ves tigated by us ing dif fer ent nanofluids. In this anal y sis, heavy wa ter-based nanofluids con tain ing var i ous vol u met ric per cent ages of Al 2 O 3 , TiO 2 , CuO, Ti, Cu, Zr, and Si nanoparticles were used. A typ i cal CANDU-6 re ac tor was se lected as ref er ence for re ac tor core mod el ling. The re sults of the neutronic anal y sis show that Al 2 O 3 nanofluids with 1% vol u met ric per cent age are the most suit able cool ant for CANDU-6 re ac tors which can in crease the cool ant heat trans fer co ef fi cient and con se quently en hance the plant ef fi ciency.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Neutronic simulation of a CANDU-6 reactor with heavy water-based nanofluid coolant

2017

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“…3+ nesil nükleer reaktörler olarak tanımlanıp, VVER-1000 ve VVER-1200 olmak üzere farklı güç kapasitelerine sahiptirler. Bu tip yeni nesil nükleer reaktörlerin geometrik tasarım ya da alternatif yakıt kullanımları durumlarındaki nötronik performans davranışları incelenmekte ve bir çok araştırmacı tarafından araştırılmaktadır [4][5][6]. Yapılan çalışmalarda uluslararası Nükleer Enerji Ajansı (NEA) tarafından paylaşılan reaktör parametrelerine bağlı olarak, farklı araştırmacılar tarafından modelleme yapılmakta ve kullanılması planlanan bilgisayar programları ile nükleer veri kütüphanelerinin uygunluğu ve doğruluğunun test edilmesi mümkün olabilmektedir [7,8].…”

Section: Etik Standartların Beyanı (Declaration Of Ethical Standards)unclassified

VVER-1000 Reaktöründe Alüminyum Nanoparçacıklı Soğutucunun Termal Performansının İncelenmesi

2021

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“…A nanofluid is a suspension of low concentration (below 10% vol.) of nanoparticles like aluminums oxide (Al 2 O 3 ), titanium oxide (TiO 2 ) and copper oxide (CuO) and a base fluid (such as water or ethylene glycol) [13]. Using nanofluid to improve thermal properties of cooling fluid is dated back to 1990s by Choi [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have used nanofluid in nuclear systems for study. Wu and Zhao [13] in reviewing nanofluid heat transfer and critical heat flux enhancement especially in nuclear reactor have claimed that to turn nanofluid application from vision to reality, we need to first overcome some challenges, like a precise database of nanofluid thermophysical properties and nanofluid stability in real working condition. Zarifi et al performed a neutronic simulation of different nanofluids in VVER-1000 reactor [13].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heat transfer improvement in the divertor of fusion reactors by using Al2O3 nanofluid

et al. 2018

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The objective of this work is to study the effect of using nanofluids as coolant on divertor system of fusion reactors which is known to be subjected to high heat loads coming from the plasma. Turbulent force convective heat transfer of water-based Al 2 O 3 nanofluid flowing through the CuCrZr cooling tube of a small scale of mock up made of five tungsten monoblocks has been numerically investigated using single phase model. Computational fluid dynamic approach has been applied by using CFD software FLUENT 6.3.26. The computed results have been validated by traditional corrections expression reported by previous works. The dependence of temperature contours and profiles on volume fraction of nanofluids for different walls of this monoblock has been studied and compared with pure water. The maximum allowed temperature of the candidate material under unusual situation of a fusion reactor has been considered and compared with the maximum temperatures resulted from the CFD results. The effects of various nanofluid concentrations and Reynolds numbers on average Nusselt number have been also investigated. The results show a significant improvement in heat removal from the divertor under the cooling of alumina/water nanofluid with respect to pure water.

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Neutronic simulation of water-based nanofluids as a coolant in VVER-1000 reactor

Cited by 18 publications

References 3 publications

Neutronic simulation of a CANDU-6 reactor with heavy water-based nanofluid coolant

Neutronic simulation of a CANDU-6 reactor with heavy water-based nanofluid coolant

VVER-1000 Reaktöründe Alüminyum Nanoparçacıklı Soğutucunun Termal Performansının İncelenmesi

Numerical simulation of heat transfer improvement in the divertor of fusion reactors by using Al2O3 nanofluid

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