[논문]Numerical investigation of purge gas flow through binary-sized pebble beds using discrete element method and computational fluid dynamics

Lee, Youngmin; Choi, Dongkwon; Hwang, Seon-Pil; Ahn, Mu-Young; Park, Yi-Hyun; Cho, Seungyon; Sohn, Dongwoo

doi:10.1016/j.fusengdes.2020.111704

[해외논문] Numerical investigation of purge gas flow through binary-sized pebble beds using discrete element method and computational fluid dynamics

Fusion engineering and design, v.158, 2020년, pp.111704 -

Lee, Youngmin (TBM Technology Team, National Fusion Research Institute) , Choi, Dongkwon (Department of Mechanical Engineering, Korea Maritime & Ocean University) , Hwang, Seon-Pil (Department of Mechanical Engineering, Korea Maritime & Ocean University) , Ahn, Mu-Young (TBM Technology Team, National Fusion Research Institute) , Park, Yi-Hyun (TBM Technology Team, National Fusion Research Institute) , Cho, Seungyon (TBM Technology Team, National Fusion Research Institute) , Sohn, Dongwoo (Department of Mechanical Engineering, Korea Maritime & Ocean University)

Abstract ▼ AI-Helper

Abstract The main function of the breeder materials, such as Li2TiO3, Li4SiO4, and Li2ZrO3, in a solid type breeding blanket is to produce tritium, which is transferred to the fuel cycle system by helium purge gas and is used as a fuel for nuclear fusion reactions. Since the configuration of the breeder should be designed considering the purge gas flow, the form of pebble beds is mainly adopted, thereby leading to the smooth flow inside a blanket. The flow characteristics can be important design drivers because they also affect the design of the fuel cycle system. In order to increase a tritium production rate, a large number of breeders should be placed in the same space and various sizes of pebbles instead of one size of pebbles can be thus applied to increase the packing fraction of pebble beds. In this case, however, the flow resistance may increase and hence the relationship between the pebble bed configuration and the purge gas flow should be carefully investigated. In this study, a computational framework for one-way coupling analysis of the discrete element method and computational fluid dynamics is established to simulate the purge gas flow through binary-sized pebble beds. The configurations of pebble beds are obtained using the discrete element method and their geometries are modified by smoothing the sharp circular edges at the contact points of pebbles to construct proper meshes for computational fluid dynamics simulations. The flow resistance of binary-sized pebble beds is then investigated in terms of the pressure drop in the breeding zone. Highlights A computational framework for one-way coupled DEM-CFD simulations was established. The packing configurations of binary-sized pebbles were obtained from the DEM simulations. The flow resistance of binary-sized pebble beds was estimated from the CFD simulations of helium purge gas flow. The effect of a mixing ratio of small and large pebbles was investigated in terms of the packing fraction and pressure drop.

Keyword

참고문헌 (25)

Fusion Engineering Design Gierszewski 17 95 1991 10.1016/0920-3796(91)90042-O Ceramic sphere-pac breeder design for fusion blankets

상세보기
Journal Nuclear Materials Ying 367-370 1281 2007 10.1016/j.jnucmat.2007.03.240 Status and perspective of the R&D on ceramic breeder materials for testing in ITER

상세보기
Geotechnique Cundall 29 47 1979 10.1680/geot.1979.29.1.47 A discrete numerical model for granular assemblies

상세보기
Fusion Engineering and Design Van Lew 89 1151 2014 10.1016/j.fusengdes.2014.04.066 A discrete element method study on the evolution of thermomechanics of a pebble bed experiencing pebble failure

상세보기
Fusion Engineering and Design Moscardini 121 22 2017 10.1016/j.fusengdes.2017.05.110 A discrete element method to simulate the mechanical behavior of ellipsoidal particles for a fusion breeding blanket

상세보기
Fusion Engineering and Design Moscardini 127 192 2018 10.1016/j.fusengdes.2018.01.013 Discrete element method for effective thermal conductivity of packed pebbles accounting for the Smoluchowski effect

상세보기
Fusion Engineering and Design Desu 127 259 2018 10.1016/j.fusengdes.2018.01.005 DEM simulation of packing mono-sized pebbles into prismatic containers through different filling strategies

상세보기
Fusion Engineering and Design Gong 136 1444 2018 10.1016/j.fusengdes.2018.05.033 Numerical investigation of the pebble bed structures for HCCB TBM

상세보기
Fusion Engineering and Design Sohn 137 182 2018 10.1016/j.fusengdes.2018.09.012 Numerical prediction of packing behavior and thermal conductivity of pebble beds according to pebble size distributions and friction coefficients

상세보기
Fusion Engineering and Design Wang 140 41 2019 10.1016/j.fusengdes.2019.01.140 Numerical influence analysis of the packing structure on ceramic breeder pebble beds

상세보기
Fusion Engineering and Design Lee 146 2285 2019 10.1016/j.fusengdes.2019.03.173 Numerical investigation of mechanical and thermal characteristics of binary-sized pebble beds using discrete element method

상세보기
Fusion Science and Technology Van Lew 68 288 2015 10.13182/FST14-937 Coupling discrete element models of ceramic breeder pebble beds to thermofluid models of helium purge gas using volume-averaged Navier-Stokes and the lattice-Boltzmann method

상세보기
Fusion Engineering and Design Van Lew 109-111 539 2016 10.1016/j.fusengdes.2016.02.059 Numerical study on influences of bed resettling, breeding zone orientation, and purge gas on temperatures in solid breeders

상세보기
Fusion Engineering and Design Chen 114 84 2017 10.1016/j.fusengdes.2016.12.003 Flow characteristics analysis of purge gas in unitary pebble beds by CFD simulation coupled with DEM geometry model for fusion blanket

상세보기
Progress in Nuclear Energy Wu 109 29 2018 10.1016/j.pnucene.2018.07.010 DEM-CFD simulation of helium flow characteristics in randomly packed bed for fusion reactors

상세보기
Fusion Engineering and Design Choi 143 24 2019 10.1016/j.fusengdes.2019.03.068 A DEM-CFD study of the effects of size distributions and packing fractions of pebbles on purge gas flow through pebble beds

상세보기
Fusion Engineering and Design Gan 85 1782 2010 10.1016/j.fusengdes.2010.05.042 Computer simulation of packing structure in pebble beds

상세보기
Fusion Engineering and Design Mandal 88 216 2013 10.1016/j.fusengdes.2013.02.033 Void fraction and effective thermal conductivity of binary particulate bed

상세보기
Computers and Chemical Engineering Dixon 48 135 2013 10.1016/j.compchemeng.2012.08.011 Systematic mesh development for 3D CFD simulation of fixed beds: contact points study

상세보기
Chemical Engineering Journal Eppinger 166 324 2011 10.1016/j.cej.2010.10.053 DEM-CFD simulations of fixed bed reactors with small tube to particle diameter ratios

상세보기
O’Sullivan 2011 Particulate Discrete element modelling: a geomechanics perspective
2015 CD-adapco, Star-CCM+ 10.06 user guide
VDI-Forschungsheft (in German) Sauter 279 1926 Die Grossenbestimmung der in Gemischnebeln von Verbrennungskraftmaschinen vorhandenen Brennstoffteilchen
Chemical Engineering Progress Ergun 48 89 1952 Fluid flow through packed columns
Transactions of the Institution of Chemical Engineers Carman 15 150 1937 Fluid flow through granular beds

LOADING...

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 논문

해당 논문의 주제분야에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

원문 URL 링크

DOI : 10.1016/j.fusengdes.2020.111704
Elsevier : 저널 > 논문

*원문 PDF 파일 및 링크정보가 존재하지 않을 경우 KISTI DDS 시스템에서 제공하는 원문복사서비스를 사용할 수 있습니다.

저작권 관리 안내

내보내기 메뉴

내보내기 구분

파일저장
인쇄
메일전송

구성항목

기본정보
상세정보

관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관

저장형식

Text(ASCII format)
Excel format
RefWorks Direct Export
RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley

메일정보

받는사람 (필수): @
보내는사람 (선택): @
제목
내용: KISTI 검색결과 이메일 서비스

안내

총 건의 자료가 검색되었습니다.

다운받으실 자료의 인덱스를 입력하세요. (1-10,000)

검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다.

데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요)

다운로드 파일은 UTF-8 형태로 저장됩니다.
파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오.

Text(ASCII format)
Excel format

표제어: PCR

동의어: Packet Collision Rate

용어 설명 출처 목록 (6)

용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

AI-Helper ※ AI-Helper는 을 사용합니다.

AI-Helper

안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

연합인증