doublet method 中文意思是什麼
doublet method
解釋
雙重線法-
" for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino
產生第一個實驗室創造的中微子束，並發現中微子，從而證明了輕子的對偶結構 -
In this thesis, we introduce two kinds of methods to establish magnetic flux leakage model : the method of magnetic doublet and the method of finite element. and we also introduce some signal processing technologies which are often used in magnetic flux leakage testing and flaw distinguish algorithm in our system
漏磁場模型的建立是實現定量分析的基礎，文中介紹了建立漏磁場模型的兩種常用方法：磁偶極子法和有限元法，以及漏磁檢測中常用的信號處理技術和本系統中用到的缺陷判別技術。 -
The surface panel method has been applied to predict the hydrodynamic performance of highly skewed propeller. the surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution. for highly skewed propeller, the conventional method generating grid oriented along constant radii will result in a high aspect ratio and a high skewness and a twist panel near the propeller tip on blade surface, which result easily in incorrect calculation results of velovity on blade surface, even in iteration divergence and calculation failure. a “ non - conventional grid ” is developed to acoid these problems. this grid can effectively solve the problem of the calculation and convergence for highly skewed propeller. the non - linear kutta condition of equal pressure on upper and lower at the trailing edge is executed by the iterative procedure. by sample calculating, the obtained results are satisfied the experimental data
採用面元法預報大側斜螺旋槳水動力性能，螺旋槳表面及尾渦面離散為四邊形雙曲面元，每個面元上布置等強度源匯和偶極子分佈.對于大側斜螺旋槳而言，槳葉表面採用常規的等半徑網格劃分方法在近葉梢處將導致大展弦比、大側斜和扭曲面元，這容易使槳葉表面速度的計算結果不正確，甚至會導致迭代過程發散及計算失敗.文中建立了一種「非常規網格」劃分方法，能有效地解決大側斜螺旋槳的計算和收斂問題.槳葉隨邊處通過迭代實現非線性等壓庫塔條件 -
This dissertation use a high - order surface panel method based on b - spline for predicting the hydrodynamic performance of the propeller in steady flow. the b - splme is applied not only to representation of the propeller ' s geometry, but also to represent the doublet strength distribution on the surface of the propeller, which makes the geometry representation and the doublet strength distribution of the propeller more precise
本文採用了一種基於b樣條的高階面元法預報螺旋槳的定常水動力性能，不但用b樣條表達螺旋槳表面的幾何形狀，而且還用其表示螺旋槳表面的偶極子分佈， b樣條的應用提高了螺旋槳的幾何以及偶極子密度表達的精度。
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