Task completion report for investigating why output signal-variable values differ from their output component-parameter values in test problem MST2

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Signal-variable values and their component-parameter values differ in an end-of-timestep edit to the TRCOUT and TRCGRF files because signal variables have beginning-of-timestep values, and component parameters have end-of-timestep values. Oscillatory divergence in the MST2 standard test problem after 9000 s occurs because of TRAC-P`s numerical evaluation at a 1000 material Courant number. The magnitude of that divergence has diminished by a factor of 3.5 from Version 5.3.01 to 5.4.15 and by a factor of 25 from Version 5.4.15 to 5.4.28. That divergence can be eliminated by evaluating MST2 with a maximum material Courant number of 500.

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31 p.

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Steinke, R.G. September 10, 1997.

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Signal-variable values and their component-parameter values differ in an end-of-timestep edit to the TRCOUT and TRCGRF files because signal variables have beginning-of-timestep values, and component parameters have end-of-timestep values. Oscillatory divergence in the MST2 standard test problem after 9000 s occurs because of TRAC-P`s numerical evaluation at a 1000 material Courant number. The magnitude of that divergence has diminished by a factor of 3.5 from Version 5.3.01 to 5.4.15 and by a factor of 25 from Version 5.4.15 to 5.4.28. That divergence can be eliminated by evaluating MST2 with a maximum material Courant number of 500.

Physical Description

31 p.

Notes

INIS; OSTI as DE98005314

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  • Other Information: PBD: 10 Sep 1997

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  • Other: DE98005314
  • Report No.: LA-UR--98-99
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/658392 | External Link
  • Office of Scientific & Technical Information Report Number: 658392
  • Archival Resource Key: ark:/67531/metadc711430

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Creation Date

  • September 10, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • May 16, 2016, 5:56 p.m.

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Steinke, R.G. Task completion report for investigating why output signal-variable values differ from their output component-parameter values in test problem MST2, report, September 10, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc711430/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.