Null-Collision Monte Carlo Method

• Material Type: 文書・図像類
• Title: Null-Collision Monte Carlo Method
• Author/Editor: 古浦, 勝久; KOURA, Katsuhisa
• Author Heading: 古浦, 勝久; KOURA, Katsuhisa
• Publication, Distribution, etc.: 航空宇宙技術研究所
• Publication Date: 1987-03
• Publication Date (W3CDTF): 1987-03
• Periodical title: Technical Report of National Aerospace Laboratory TR-926T
• No. or year of volume/issue: 926T
• Volume: 926T
• Pages: 10-
• ISSN (Periodical Title): ISSN : 0389-4010
• Text Language Code: eng
• Target Audience: 一般
• Note (General): 直接シミュレーション・モンテカルロ法における無効衝突(NC)技法を内部自由度と化学反応を伴う混合気体及び(電磁場のもとでの)熱浴気体中の微量成分(荷電)分子に拡張する。微量成分分子は相互干渉がないのでテスト粒子法が適用可能であり,NCテスト粒子〔NC(TP)〕技法も記述する。NC, NC(TP),及び衝突頻度(CF)技法間の定量的比較のため,これらの技法を気体の化学反応緩和,Ar熱浴中での微量電子の熱平衡化,及び一定電場のもとでのHe熱浴中の電子スウォームに適用する。これらの技法の結果はよく一致する。NC技法はCF技法の困難性がなく,また,計算時間もCF技法より少ない。特に,電場のもとでの電子スウォームに対しては,NC(TP)技法の計算時間はNC及びCF技法によりかなり少ない。; The null-collision (NC) technique in the direct-simulation Monte Carlo method is extended to gas mixtures with internal degrees of freedom and chemical reactions and to trace (charged) molecules in the heat-bath gas (under the influence of the electric and magnetic fields). Because the trace molecules do not mutually interact, the test-particle method is applicable and the NC test-particl〔NC(TP)〕technique is aiso presented. In order to make quantitative comparisons between the NC, NC(TP), and collision frequency(CF) techniques, these techniques are applied to the relaxation of a chemicaly reacting gas, the thermalization of trace electrons in the Ar heat bath, and the electron swarm in the He heat bath under the influence of the constant electric field. The results of these techniques are in agreement. Because the NC technique is free from the difficulties in the CF technique and the computation time required for the NC technique is less than that for the CF technique; especially for the elctron swarm in the electric field, the NC(TP) technique requires much less computation time than the NC and CF techniques.; 資料番号: NALTR0926000; レポート番号: NAL TR-926T
• Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=45185&item_no=1&attribute_id=31&file_no=1
• Access Restrictions: 限定公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ