Proposal of an Effective Initial Guess Scheme for Higher Harmonic Mode Calculation of Boiling Water Reactor Cores.

• TAKEUCHI Hiroyuki

  In-Core Fuel Management System Department Toden Software Inc.

• HOTTA Akitoshi

  In-Core Fuel Management System Department Toden Software Inc.

書誌事項

タイトル別名

• Proposal of an Effective Initial Guess

抄録

The technique of producing the initial flux guess in resolving the higher harmonic modal flux of a heterogeneous reactor core was presented based on the Ringhals-1 core data. From these studies, the initial guess scheme making use of a two-dimensional horizontal plane, Scheme C, showed excellent convergence performance. In Fig. 1(b), the magnitude of the relative error in Scheme C at the first 150 iterations was reduced to 1.0e^-2, compared to 1.0e⁺⁰ in the reference case. From the cost performance point of view, Scheme C is most efficient because it needs only two-dimensional fine mesh calculation. In addition, the results of our method was compared with the LPRM signals of Ringhals-1 test point in which the regional oscillation was observed and showed good agreement.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 34 (7), 714-716, 1997

  一般社団法人 日本原子力学会

キーワード

• BWR type reactors stability
• higher harmonic mode
• harmonic oscillator models
• ACCORD
• oscillations
• power method
• Ringhals-1
• regional instability
• subtraction method
• initial guess
• eigenvalue problem

詳細情報

• CRID: 1390282679072947968
• NII論文ID: 10002077627
• NII書誌ID: AA00703720
• DOI: 10.3327/jnst.34.714
• COI: 1:CAS:528:DyaK2sXls1Khtr0%3D
• ISSN: 18811248
• ISSN: 00223131
• NDL書誌ID: 4260281
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4260281
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可