karman constant 中文意思是什麼
karman constant
解釋
卡曼常數-
The goal of this paper is to study fully developed turbulent pipe flow. with the aid of the tripping annulus at the inlet, based on the experimental investigation and numerical simulation, detailed researches on a few basic rules in pipe flow have been performed, such as mean velocity profile, relative intensity of turbulence, the log - law, von karman ' s constant and reattachment length, thus filling some gaps in the research work of predecessors and obtaining a far - reaching understanding
本文的目的就是利用入口擋環進一步探索充分發展的圓管湍流，通過實驗和數值模擬對圓管湍流的若干基本規律，如平均速度分佈、相對湍流強度、對數定律、馮?卡門常數和再附著長度等進行詳細的研究，以填補前人研究中的一些空白，並獲得更深入的了解。 -
The method to determine von karman ' s constant with the integral equations was reviewed. the variation of von karman ' s constant in the overlap region was also analysed. a new conclusion was driven, that von karman ' s constant is a function of reynolds number or karman number in the overlap region
介紹了利用積分方程確定圓管湍流中馮?卡門常數的方法，並詳細分析了重疊區域中馮?卡門常數的變化情況，提出了馮?卡門常數在重疊區域中是雷諾數或卡門數函數的新結論。 -
Formulas of the mean velocity profiles of the two regions can be developed on the basis of this physical model, and the expression of the von karman universal, constant is given with an error of less than 15 %
據此導出了兩個流區的時均流速分佈公式，給出了卡門常數的數學表達式，誤差小於15 。
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