查詢結果分析
來源資料
頁籤選單縮合
題名 | 以大衛生演算法建構之三維爐心擾動計算方法=A Three-Dimensional Core Perturbation Method with a Davidson Algorithm |
---|---|
作者姓名(中文) | 胡中興; 薛燕婉; | 書刊名 | 核子科學 |
卷期 | 36:3 1999.06[民88.06] |
頁次 | 頁197-209 |
分類號 | 449.2 |
關鍵詞 | 特徵值問題; 大衛生方法; 三維擾動計算; Eigenvalue problem; Davidson method; Three-dimensional perturbation calculation; |
語文 | 中文(Chinese) |
中文摘要 | 在爐心擾動計算中,以擾動法要求得準確的中子通率分佈,通常不是很容易。而且 因為牽涉到求解大型矩陣,需要的計算相當繁複。尤其當計算的問題從一維、二維增加到三 維時,困難度更是大增。大衛生演算法配合「位移形狀函數向量」已經於近期被成功地運用 在二維擾動計算上。本研究更進一步將之發展為可用於三維擾動計算的程式。經由標準尺度 問題計算顯示,此法不但具高準確度,且是高效率的計算方法,一如二維計算之結果。特別 是將「位移形狀函數向量」使用於各擾動平面,對於大型擾動如控制棒移動非常有效,可大 幅提升擾動計算的準確度,是本擾動法用於三維計算仍能十分成功的關鍵之一。計算結果也 證實了此擾動計算法有極大的潛力可發展在各種實際應用之問題上。 |
英文摘要 | In perturbation calculations, obtaining accurate neutron flux distribution of a reactor core is not an easy task. The work involves complicated computations of large matrices. As the dimension of the problem increases from one-dimensional to two-dimensional and to three-dimensional, the problem becomes more and more difficult to be solved. Davidson algorithm coupled with shifted form-function vector method has been successfully implemented recently and proved to be very effective in the calculations of 2-D perturbations. In this study, this method is further developed for 3-D perturbation calculations. From the results of the benchmark problems it is shown that the method is not only very accurate but also very efficient as has been previously observed in the 2D calculations. For large perturbations such as control rod movement, the use of shifted form-function vector applied to each axial plane involving perturbation can effectively improve the accuracy of the perturbation calculations. It plays a key role in the successful implementation of the method to 3D problems. The benchmark results demonstrate the potential of this method to be applied to various practical problems. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。