Unit cell simulation for cylinders on a triangular pitch

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In this paper we analyze the use of these equivalent unit cells for two problem-types of interest: a infinite lattice of small-diameter fuel pins and an infinite array of large shipping containers. Both void and water are considered as interstitial materials between the cylindrical units. The fuel pins modeled are uranium nitride pins clad with tantalum and niobium with a diameter of 1.1 cm. The pins are infinitely long. The shipping container model is a 55 gallon drum with 13 cm thick insulation between the drum and the inner steel container. The fissile loading is a 6.5 kg sphere of ... continued below

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Pages: (6 p)

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O'Dell, R.D. & Schlesser, J.A. January 1, 1991.

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Description

In this paper we analyze the use of these equivalent unit cells for two problem-types of interest: a infinite lattice of small-diameter fuel pins and an infinite array of large shipping containers. Both void and water are considered as interstitial materials between the cylindrical units. The fuel pins modeled are uranium nitride pins clad with tantalum and niobium with a diameter of 1.1 cm. The pins are infinitely long. The shipping container model is a 55 gallon drum with 13 cm thick insulation between the drum and the inner steel container. The fissile loading is a 6.5 kg sphere of plutonium inside the dry inner container. Results of k{sub eff} are provided there is exact'' agreement (within statistics) among the models, thus confirming the neutronic equivalency of the three unit cell models when properly used. 2 refs., 2 tabs.

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Pages: (6 p)

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OSTI; NTIS; GPO Dep.

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  • Winter meeting of the American Nuclear Society (ANS), San Francisco, CA (United States), 10-15 Nov 1991

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  • Other: DE91016089
  • Report No.: LA-UR-91-2107
  • Report No.: CONF-911107--20
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5440616
  • Archival Resource Key: ark:/67531/metadc1066155

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 21, 2018, 6:35 p.m.

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O'Dell, R.D. & Schlesser, J.A. Unit cell simulation for cylinders on a triangular pitch, article, January 1, 1991; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1066155/: accessed May 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.