Structural design criteria for high heat flux components.

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The high temperature design rules of the ITER Structural Design Criteria (ISDC), are applied to first wall designs with high heat flux. The maximum coolant pressure and surface heat flux capabilities are shown to be determined not only by the mechanical properties of the first wall material but also by the details of the blanket design. In a high power density self-cooled lithium blanket, the maximum primary stress in the first wall is controlled by many of the geometrical parameters of the blanket, such as, first wall span, first wall curvature, first wall thickness, side wall thickness, and second wall ... continued below

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16 p.

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Majumdar, S. July 14, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 11 times . More information about this article can be viewed below.

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Description

The high temperature design rules of the ITER Structural Design Criteria (ISDC), are applied to first wall designs with high heat flux. The maximum coolant pressure and surface heat flux capabilities are shown to be determined not only by the mechanical properties of the first wall material but also by the details of the blanket design. In a high power density self-cooled lithium blanket, the maximum primary stress in the first wall is controlled by many of the geometrical parameters of the blanket, such as, first wall span, first wall curvature, first wall thickness, side wall thickness, and second wall thickness. The creep ratcheting lifetime of the first wall is also shown to be controlled by many of the same geometrical parameters as well as the coolant temperature. According to most high temperature design codes, the time-dependent primary membrane stress allowable are based on the average temperature (ignoring thermal stress). Such a procedure may sometimes be unconservative, particularly for embrittled first walls with large temperature gradients. The effect of secondary (thermal) stresses on the accumulation of creep deformation is illustrated with a vanadium alloy flat plate first wall design.

Physical Description

16 p.

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OSTI as DE00012430

Medium: P; Size: 16 pages

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  • 5th International Symposium on Fusion Nuclear Technology, Rome (IT), 09/19/1999--09/24/1999

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  • Report No.: ANL/TD/CP-98295
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 12430
  • Archival Resource Key: ark:/67531/metadc625991

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  • July 14, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 7, 2017, 3:30 p.m.

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Majumdar, S. Structural design criteria for high heat flux components., article, July 14, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc625991/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.