numerical grid generation 中文意思是什麼

numerical grid generation 解釋
數值網格生成
  • numerical : adj 數字的；數值的；用數字表示的。 （a） numerical order 號數。 a numerical statement 統計。 the ...
  • grid : n 1 格子，格柵。2 （蓄電池的）鉛板。3 【無線電】柵級。4 鐵道網；【電學】電力網；〈英國〉（全國）...
  • generation : n. 1. 代〈約30年〉，世代，時代；同時代的人。2. 一代[一世]。3. 生殖，生育；發生，產生。4. 【數學】（面、體、線的）形成。5. 完善化階段，完善化方案，完善化的模型；發展階段。
  1. Regard - ing the surface runoff mechanism, liang and xie 1, 2 presented a new surface runoff parameterization which dynamically represents both the horton and dunne runoff generation mechanisms within within a model grid cell together with a consideration of the subgrid - scale het - erogeneity, which can be applied to not only humid regions but also droughty regions as well 3, 4. regard - ing the soil water movement, xie et al. 5 developed an unsaturated flow numerical model based on the finite element method, and xie et al. 6 presented another numerical model to compute soil moisture and water flow flux together by means of a mixed finite element method

    在地表徑流方面，文獻1 3發展了一種同時考慮蓄滿超滲產流機制及次網格非均勻性的新的徑流機制模型，並用其改進了陸面模式vic variable infiltration capacity中的徑流計算，該模型既適用於濕潤地區也適用於乾旱地區4 .在土壤水模型方面，文獻5採用有限元質量集中法發展了非飽和土壤水流的數值模型，文獻6則採用混合有限元法建立了非飽和土壤水分含量和通量計算的數值模型
  2. This thesis also describes the numerical simulation of three - dimensional turbulent flow in super - low specific - speed impeller, points out the turbulence model and numerical solution for it, and gives the writer ' s view of the grid - generation

    論文的另一部分工作是數值模擬極低比轉數泵葉輪內部流動，提出了適合的湍流模型和數值解法，並對網格的劃分提出了自己的看法。
  3. A propbr data structure is used to assist grid generation for different geometric dimensions. a concept of entropy in broad sense is proposed for convective - diffusive problems in chapter 7. it is proved that there is an intrinsic relationship between the stability of the numerical schemes of the convective - - diffusive differential equations and the non - negative property of the entropy generation caused by the effective diffusion

    第七章提出了對流擴散問題中的廣義熵概念，研究了擴散熵產非負性特徵與數值格式穩定性的內在聯系，分析證明了擴散熵產非負定性及統計非負定性的穩定性準則，探討了穩定性與模擬性之間的矛盾與聯系。
  4. In modern aircraft design, there is an urgent requirement for accurate, efficient and easy - to - use numerical analysis tools. for this purpose, this thesis introduces recent progress in the generation and application of cartesian grid with tree data structure and adaptive refinement. coupled with hybrid grid techniques, euler and navier - stokes equations are solved

    本文針對現代飛行器設計中對實用、高效、準確的氣動力分析工具的迫切需求，基於叉樹數據結構，發展了一種自適應直角切割網格方法，採用混合網格技術，實現了對流場euler和navier - stokes方程的計算求解，進一步完成了復雜增升裝置繞流和外掛物分離投放非定常流場的數值模擬。
  5. Based on tree data structure, the cartesian grids about 2 - d and 3 - d configurations are generated using the surface - cutting procedure. in the course of grid generation, a two - step ray - casting algorithm to excluded cells inside the body and a cell - merging technique to avoid numerical instability are fully developed. after creating these surrounding grids, the cell - cutting algorithm is designed to perform geometry - based refinement of grids, and greatly improve the applicability and quality of grid generation

    採用物面切割，基於叉樹數據結構，發展了一種普遍適用於二維和三維外形的直角切割網格生成方法；構造兩步射線求交演算法，刪除外形內的固體網格，以及小網格合併演算法，確保網格質量和流場計算的穩定性；運用對任意網格的切割細分演算法，實現了針對幾何外形的自適應網格加密，使得網格生成更具普適性和靈活性。
  6. Numerical grid generation

    數值網格生成
  7. Grid generation is one of the key problems in cfd and the numerical generation technique using partial differential equation is widely used and frequently studied, one of which elliptic equation in common use

    網格生成技術是cfd中極為關鍵的問題之一，偏微分數值網格生成技術是目前應用和研究較多的網格生成方法，其中應用較多的是橢圓型網格生成方法。
  8. Therefore, the paper establishes the parallel computing platform and meets the demand of computing resources for large eddy simulation. it also studies the integration of cad / cam, grid generation system and cfd system, and brings the model computed in the paper into this system. on the bases of systematical and thorough numerical simulation researches in circular cylinder and the compares between instantaneous piv metrical results and numerical results of circular cylinder, the paper obtained some problems and several conclusions which should be noticed in les for making correct computatioa finally, by using these experiences and conclusions above and by putting them into an actual problem in engineering - optimized numerical simulation of static mixer, this paper achieved the turbulent high - level numerical simulation technique, i. e., system atical attempt in engineering application by les method

    為此，搭建了微機并行計算平臺，解決了大渦模擬對計算資源要求；對cad cam 、網格生成與cfd系統集成進行研究，並將論文中所要計算的模型納入到此系統內；在對圓柱繞流問題進行了系統和深入的數值模擬研究和對圓柱繞流瞬態piv測量結果與數值計算結果進行比較工作基礎上，得到大渦模擬方法正確計算所需要注意問題和若干結論；最後利用以上得出的計算經驗和結論，通過對一個實際工程問題? ?靜態混合器優化的數值計算，完成了cfd中湍流高級數值模擬技術? ?大渦模擬方法工程應用的系統嘗試。
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