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ICONE 17, Brussels, July 13, 2009 A case history of CFD support to ADS system plant 1 A case history of CFD support to Accelerator Driven System plant.

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Presentation on theme: "ICONE 17, Brussels, July 13, 2009 A case history of CFD support to ADS system plant 1 A case history of CFD support to Accelerator Driven System plant."— Presentation transcript:

1 ICONE 17, Brussels, July 13, 2009 A case history of CFD support to ADS system plant 1 A case history of CFD support to Accelerator Driven System plant A case history of CFD support to Accelerator Driven System plant Vincent Moreau CRS4, Energy & Environment Program Luigi Mansani, Maurizio Petrazzini Ansaldo Nucleare

2 ICONE 17, Brussels, July 13, 2009 2 A case history of CFD support to ADS system plant What is an Accelerator Driven System ? An Accelerator Driven System, or ADS, consists in a sub-critical nuclear fission reactor coupled with a proton accelerator by means of a target system. An Accelerator Driven System, or ADS, consists in a sub-critical nuclear fission reactor coupled with a proton accelerator by means of a target system.

3 ICONE 17, Brussels, July 13, 2009 3 A case history of CFD support to ADS system plant THE EUROTRANS PROJECT The Integrated Project EUROTRANS, funded by the European Commission (FP6, 2006-2010) is aimed at providing: The Integrated Project EUROTRANS, funded by the European Commission (FP6, 2006-2010) is aimed at providing: 1. the advanced design of a multi purpose research oriented ADS, called XT-ADS (600 Mev, 80 MWth) 2. The preliminary design of an industrial scale ADS, called EFIT (800 Mev, 400 MWth)

4 ICONE 17, Brussels, July 13, 2009 A case history of CFD support to ADS system plant 4 CRS4, Pula CFD Ansaldo, Genoa coordination, design ENEA, Bologna Neutronics

5 ICONE 17, Brussels, July 13, 2009 5 A case history of CFD support to ADS system plant European Facility for Industrial TransmutationEFIT Beam power: 800 Mev Beam power: 800 Mev Beam intensity: ~20 mA Beam intensity: ~20 mA Plant power: ~400 MWth Plant power: ~400 MWth Primary coolant: pure lead Primary coolant: pure lead Primary coolant flow rate: 36,000 kg/s Primary coolant flow rate: 36,000 kg/s Core inlet temperature: 400 C Core inlet temperature: 400 C Core outlet temperature: 480 C Core outlet temperature: 480 C Reactor vessel size: 10 m diameter, 12 m high Reactor vessel size: 10 m diameter, 12 m high

6 ICONE 17, Brussels, July 13, 2009 6 A case history of CFD support to ADS system plantEFIT Ansaldo design (1/2)

7 ICONE 17, Brussels, July 13, 2009 7 A case history of CFD support to ADS system plant EFIT 2D CFD simulation Bottom + Core + Inner Plenum Bottom + Core + Inner Plenum Nominal power and flow rate Nominal power and flow rate Differentiated core porous resistance Differentiated core porous resistance Objectives: Preliminary simulation for support to discussion Set up physical properties Get confident with object under study

8 ICONE 17, Brussels, July 13, 2009 8 A case history of CFD support to ADS system plant EFIT 2D CFD simulation

9 ICONE 17, Brussels, July 13, 2009 9 A case history of CFD support to ADS system plant EFIT 2D CFD simulation Effects: Withdraw from core CFD analysis (done by another partner ENEA, making also the core arrangement and the neutronic calculation) Withdraw from core CFD analysis (done by another partner ENEA, making also the core arrangement and the neutronic calculation) Separation of bottom and top concern Separation of bottom and top concern Change of the bottom grid orientation Change of the bottom grid orientation Investigate on pump entrance flow Investigate on pump entrance flow

10 ICONE 17, Brussels, July 13, 2009 10 A case history of CFD support to ADS system plant Change of the bottom grid

11 ICONE 17, Brussels, July 13, 2009 11 A case history of CFD support to ADS system plant 3D CFD check

12 ICONE 17, Brussels, July 13, 2009 12 A case history of CFD support to ADS system plant 3D CFD check

13 ICONE 17, Brussels, July 13, 2009 13 A case history of CFD support to ADS system plant 3D CFD check

14 ICONE 17, Brussels, July 13, 2009 14 A case history of CFD support to ADS system plant EFIT inner plenum

15 ICONE 17, Brussels, July 13, 2009 15 A case history of CFD support to ADS system plant EFIT inner plenum

16 ICONE 17, Brussels, July 13, 2009 16 A case history of CFD support to ADS system plant EFIT inner plenum

17 ICONE 17, Brussels, July 13, 2009 17 A case history of CFD support to ADS system plant EFIT inner plenum

18 ICONE 17, Brussels, July 13, 2009 18 A case history of CFD support to ADS system plant EFIT inner plenum

19 ICONE 17, Brussels, July 13, 2009 19 A case history of CFD support to ADS system plant EFIT inner plenum

20 ICONE 17, Brussels, July 13, 2009 20 A case history of CFD support to ADS system plant EFIT inner plenum

21 ICONE 17, Brussels, July 13, 2009 21 A case history of CFD support to ADS system plant EFIT simplified inner plenum

22 ICONE 17, Brussels, July 13, 2009 22 A case history of CFD support to ADS system plant EFIT simplified inner plenum

23 ICONE 17, Brussels, July 13, 2009 23 A case history of CFD support to ADS system plant EFIT simplified inner plenum

24 ICONE 17, Brussels, July 13, 2009 24 A case history of CFD support to ADS system plant EFIT simplified inner plenum

25 ICONE 17, Brussels, July 13, 2009 25 A case history of CFD support to ADS system plant EFIT simplified inner plenum

26 ICONE 17, Brussels, July 13, 2009 26 A case history of CFD support to ADS system plant EFIT Down-comer

27 ICONE 17, Brussels, July 13, 2009 27 A case history of CFD support to ADS system plant EFIT Down-comer

28 ICONE 17, Brussels, July 13, 2009 28 A case history of CFD support to ADS system plant EFIT Down-comer

29 ICONE 17, Brussels, July 13, 2009 29 A case history of CFD support to ADS system plant EFIT Down-comer

30 ICONE 17, Brussels, July 13, 2009 30 A case history of CFD support to ADS system plant EFIT Down-comer Before After After, After 3min transient

31 ICONE 17, Brussels, July 13, 2009 31 A case history of CFD support to ADS system plant XT-ADS Beam power: 350 or 600 Mev Beam power: 350 or 600 Mev Beam intensity: max 5 or 2.5 mA Beam intensity: max 5 or 2.5 mA Plant power: ~70 MWth Plant power: ~70 MWth Primary coolant: Lead-Bismuth Eutectic Primary coolant: Lead-Bismuth Eutectic Primary coolant flow rate: 6,000 kg/s Primary coolant flow rate: 6,000 kg/s Core inlet temperature: 300 C Core inlet temperature: 300 C Core outlet temperature: 380 C Core outlet temperature: 380 C Reactor vessel size: ~ 5 m diameter, 8 m high Reactor vessel size: ~ 5 m diameter, 8 m high

32 ICONE 17, Brussels, July 13, 2009 32 A case history of CFD support to ADS system plantXT-ADS Ansaldo design, strongly inspired from SCK-CEN Myrrha design

33 ICONE 17, Brussels, July 13, 2009 33 A case history of CFD support to ADS system plant XT-ADS

34 ICONE 17, Brussels, July 13, 2009 34 A case history of CFD support to ADS system plant XT-ADS

35 ICONE 17, Brussels, July 13, 2009 35 A case history of CFD support to ADS system plant XT-ADS

36 ICONE 17, Brussels, July 13, 2009 36 A case history of CFD support to ADS system plant XT-ADS

37 ICONE 17, Brussels, July 13, 2009 37 A case history of CFD support to ADS system plant XT-ADS

38 ICONE 17, Brussels, July 13, 2009 38 A case history of CFD support to ADS system plant XT-ADS: shut-down transient Extreme scenario Beam interrupted: core decay heat Beam interrupted: core decay heat Pump stops in 3s Pump stops in 3s SGU stops in 3s SGU stops in 3s Internal DHR system fails Internal DHR system fails Only external RVACS operative Only external RVACS operative 20,000s of transient 20,000s of transient

39 ICONE 17, Brussels, July 13, 2009 39 A case history of CFD support to ADS system plant XT-ADS: shut-down transient Initial condition

40 ICONE 17, Brussels, July 13, 2009 40 A case history of CFD support to ADS system plant XT-ADS: shut-down transient First 50s

41 ICONE 17, Brussels, July 13, 2009 41 A case history of CFD support to ADS system plant XT-ADS: shut-down transient Modified colour scales: from 50s to 20,000s

42 ICONE 17, Brussels, July 13, 2009 42 A case history of CFD support to ADS system plant XT-ADS: shut-down transient Situation at time=20,000s

43 ICONE 17, Brussels, July 13, 2009 43 A case history of CFD support to ADS system plant XT-ADS: shut-down transient

44 ICONE 17, Brussels, July 13, 2009 44 A case history of CFD support to ADS system plant XT-ADS: shut-down transient

45 ICONE 17, Brussels, July 13, 2009 45 A case history of CFD support to ADS system plant Concluding words We have presented some situations in which CFD proved to be a useful support to the designer and led to design variants. We have presented some situations in which CFD proved to be a useful support to the designer and led to design variants. The extensive use of over-simplified but not rigid treatment of pumps, heat exchangers, by-pass, core heat release allowed to investigate medium and large scale 3D behaviours in a rather consistent way. The extensive use of over-simplified but not rigid treatment of pumps, heat exchangers, by-pass, core heat release allowed to investigate medium and large scale 3D behaviours in a rather consistent way. This work has been made possible because the designers and the CFD engineer took time to exchange information and motivation, both explaining and listening… This work has been made possible because the designers and the CFD engineer took time to exchange information and motivation, both explaining and listening… More images and animations on: More images and animations on: http://people.crs4.it/moreau/HTML/EUROTRANS/index_EUROTRANS.html http://people.crs4.it/moreau/HTML/EUROTRANS/index_EUROTRANS.html

46 ICONE 17, Brussels, July 13, 2009 46 A case history of CFD support to ADS system plant Thank you for your attention


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