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Experimental and computational inves...

Khane, Vaibhav B.

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Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor./
作者:	Khane, Vaibhav B.
面頁冊數:	303 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
Contained By:	Dissertation Abstracts International75-11B(E).
標題:	Engineering, General. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3629320
ISBN:	9781321061154

Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor.
Khane, Vaibhav B.

Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor. - 303 p.

Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.

Thesis (Ph.D.)--Missouri University of Science and Technology, 2014.

The Pebble Bed Reactor (PBR) is a 4th generation nuclear reactor which is conceptually similar to moving bed reactors used in the chemical and petrochemical industries. In a PBR core, nuclear fuel in the form of pebbles moves slowly under the influence of gravity. Due to the dynamic nature of the core, a thorough understanding about slow and dense granular flow of pebbles is required from both a reactor safety and performance evaluation point of view.

ISBN: 9781321061154Subjects--Topical Terms:

1020744
Engineering, General.

Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor.
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245 1 0 $a Experimental and computational investigation of flow of pebbles in a pebble bed nuclear reactor.
300 $a 303 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
500 $a Adviser: Muthanna H. Al-Dahhan.
502 $a Thesis (Ph.D.)--Missouri University of Science and Technology, 2014.
520 $a The Pebble Bed Reactor (PBR) is a 4th generation nuclear reactor which is conceptually similar to moving bed reactors used in the chemical and petrochemical industries. In a PBR core, nuclear fuel in the form of pebbles moves slowly under the influence of gravity. Due to the dynamic nature of the core, a thorough understanding about slow and dense granular flow of pebbles is required from both a reactor safety and performance evaluation point of view.
520 $a In this dissertation, a new integrated experimental and computational study of granular flow in a PBR has been performed. Continuous pebble re-circulation experimental set-up, mimicking flow of pebbles in a PBR, is designed and developed. Experimental investigation of the flow of pebbles in a mimicked test reactor was carried out for the first time using non-invasive radioactive particle tracking (RPT) and residence time distribution (RTD) techniques to measure the pebble trajectory, velocity, overall/zonal residence times, flow patterns etc. The tracer trajectory length and overall/zonal residence time is found to increase with change in pebble's initial seeding position from the center towards the wall of the test reactor. Overall and zonal average velocities of pebbles are found to decrease from the center towards the wall. Discrete element method (DEM) based simulations of test reactor geometry were also carried out using commercial code EDEM(TM) and simulation results were validated using the obtained benchmark experimental data. In addition, EDEM(TM) based parametric sensitivity study of interaction properties was carried out which suggests that static friction characteristics play an important role from a packed/pebble beds structural characterization point of view. To make the RPT technique viable for practical applications and to enhance its accuracy, a novel and dynamic technique for RPT calibration was designed and developed. Preliminary feasibility results suggest that it can be implemented as a non-invasive and dynamic calibration methodology for RPT technique which will enable its industrial applications.
590 $a School code: 0587.
650 4 $a Engineering, General. $3 1020744
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Engineering, Nuclear. $3 1043651
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710 2 $a Missouri University of Science and Technology. $b Chemical Engineering. $3 2104033
773 0 $t Dissertation Abstracts International $g 75-11B(E).
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791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3629320