Thermal performance and flow instabilities in a multi-channel, helium-cooled, porous metal divertor module

Youchison, D.L.; North, Mark T.; Lindemuth, James E.; McDonald, J.M.; Lutz, T.J.

doi:10.1016/s0920-3796(00)00243-x

Cited by 16 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The porous medium was made up of oxygenfree copper spheres brazed to the outer shell forming ∼ 40 % porosity. The test article was able to withstand 29.5 MW/m 2 with helium flowing at 20 g/s and 4 MPa [11].…”

Section: Helium Coolingmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Cooling Schemes for High Heat Flux Components Cooling in Fusion Reactors

Domalapally

Entler

2015

Acta Polytech

View full text Add to dashboard Cite

show abstract

Section: Helium Coolingmentioning

confidence: 99%

“…The helium divertor module is a dualchannel, circumferential flow, porous metal (oxygenfree copper) device[11].…”

mentioning

confidence: 99%

Comparison of Cooling Schemes for High Heat Flux Components Cooling in Fusion Reactors

Domalapally

Entler

2015

Acta Polytech

View full text Add to dashboard Cite

show abstract

“…Helium does not become radioactive upon exposure to neutron radiation. [11] 3. Helium has been used for other processes at high temperature and therefore there is plenty of experience and understanding about its behavior at high temperatures.…”

Section: Fig 2 Pebble Bed Modular Reactor's Plant Designmentioning

confidence: 99%

Computational Analysis of Fluid Flow in Pebble Bed Modular Reactor Using Different Turbulence Models

Gandhir

Hassan

2010

ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C

View full text Add to dashboard Cite

A steady state computational study was done to obtain the pressure drop estimation in different packed bed geometries, and describe the fluid flow characteristics for such complex structures. Two out of the three Bravais lattices were analyzed, namely, simple cubic (symmetric) and body centered cubic (staggered). STARCCM+ commercial CFD software from CD-ADAPCO was used to simulate the flow. To account for turbulence effects standard k-epsilon and realizable k-epsilon models were used. Various cases were analyzed with Modified Reynolds number ranging from 10,000 to 50,000. Each model showed different results as far as the velocity and flow structure is concerned. However, for each case the flow structure showed similar features such as vortex formation downstream and between pebbles due to complex flow separation [1]. The pressure drop obtained from each model was found to be in reasonable agreement with the existing data.

show abstract

“…In addition, exposing helium to neutron radiation does not make it radioactive, unlike most other possible coolants. 2 However, the coolant helium gas contains very small amounts of reactive gases such as CO, CO 2 , H 2 , CH 4 , and H 2 O that can interact with metallic materials at high temperatures. [3][4][5][6] Two Ni-based superalloys, Alloy 617 and Haynes 230, are now promising candidate materials for hot gas ducts and intermediate heat exchangers in VHTR due to their high creep strength and oxidation resistance.…”

Section: Introductionmentioning

confidence: 99%

Analysis of oxidation behavior of Ni-base superalloys by laser-induced breakdown spectroscopy

Kim

Lee

Kim

et al. 2012

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

The application of laser-induced breakdown spectroscopy (LIBS) to elemental depth profile analysis of high temperature oxidation behavior of Ni-based superalloys is presented. An oxidation test of two Ni-base superalloys, Alloy 617 and Haynes 230, to be considered as the most promising candidates for very high temperature reactor (VHTR), was carried out in dry air at 900 C. A duplex external oxide layer of MnCr 2 O 4 and Cr 2 O 3 with internal Al 2 O 3 oxides was mainly formed in both alloys. In addition, in Alloy 617, Ni and Ti enriched oxides were observed at the surface unlike in Haynes 230, and Alloy 617 was more susceptible to intergranular oxidation. Generally, the oxidation of Alloy 617 was more extensive than that of Haynes 230, i.e. Alloy 617 formed a thicker oxide layer of $8 mm, compared with Haynes 230 with an oxide layer of $5 mm in thickness after 1000 h. Depth profiles obtained by LIBS are found to be in broad agreement with those obtained by established techniques such as X-ray diffraction (XRD), scanning electron microscopy coupled to energy dispersive X-ray spectrometry (SEM-EDS), and secondary ion mass spectrometry (SIMS).

show abstract

Thermal performance and flow instabilities in a multi-channel, helium-cooled, porous metal divertor module

Cited by 16 publications

References 6 publications

Comparison of Cooling Schemes for High Heat Flux Components Cooling in Fusion Reactors

Comparison of Cooling Schemes for High Heat Flux Components Cooling in Fusion Reactors

Computational Analysis of Fluid Flow in Pebble Bed Modular Reactor Using Different Turbulence Models

Analysis of oxidation behavior of Ni-base superalloys by laser-induced breakdown spectroscopy

Contact Info

Product

Resources

About