prandtl number 中文意思是什麼
prandtl number
解釋
蒲朗多數-
Among his many contributions to the field of turbulent thermal convection, his work in high prandtl number heat flux measurement played a pivotal role in settling a long - standing issue in the field
他在湍流熱對流領域中有著眾多的貢獻，尤其是關于高普朗德數下湍流傳熱方面的實驗研究，此研究對于解決這個領域中長期未決的問題起了極為關鍵的作用。 -
Magnetic prandtl number
磁普朗特數 -
Author considers that munk - anderson ' s modification is not suitable to simulate the buoyant flow in reservoir, and suggests the turbulent prandtl number as the constant of 0. 85 in the water temperature model of reservoir
本文認為該修正模型並不適用於水庫浮力流的模擬，建議在大型深水庫水溫模型中溫度普朗特數採用常值0 . 85 。 -
Scaling analysis of unsteady natural convection flow of a fluid with low prandtl number
數流體非穩態自然對流流動的標度分析 -
The influence of difference in temperature, reynolds number of film and prandtl number to the heat transfer performance on the evaporation side was discussed via the uniform wall temperature experiments. by analyzing above influence factors, the character of umbrella - plate evaporator which is fit for evaporation under little difference in temperature and fit for evaporating heat sensitivity materiel could be obtained
通過恆壁溫實驗探討了傳熱溫差、液膜雷諾數、普朗特數這些主要因素對傘板式降膜蒸發器傳熱性能的影響，通過對以上影響因素的分析，得出了此種結構的蒸發器特別適用於小溫差情況下的蒸發，而且特別適用於熱敏性物料的蒸發等特性。 -
A new coefficient of prandtl ' s relation was obtained from the experimental data. compared with three conventional relations of friction factor, the range of reynolds number was extended
在實驗結果的基礎上提出了普朗特摩擦系數關系式的新系數，與常用的摩擦系數關系式相比，擴大了普朗特摩擦系數關系式的雷諾數應用范圍。 -
This paper carry out experimental study of the heat transfer and flow resistance characteristics of high prandtl number fluid in 3 - d internally crossing - finned tubes with cross - experiment design method. use oil as work media
本文以未使用過的潤滑油為工質，用正交試驗設計方法，對高pr數流體在肋叉排列三維內肋管中的傳熱和流阻特性進行了實驗研究。 -
With the helium as the working gas, we attained 119. 7k the refrigeration temperature of the pulse tube. this is the first time that it enters the cryogenic field using the thermocaoustic engine in china. 2 ) the application of binary noble gas on tadptr after the discuss of the possibility of applying binary noble gas on tadptr, we give the way to calculate the prandtl number of the binary noble gas
混合工質應用於熱聲驅動的脈管製冷機對惰性氣體二元混合工質在熱聲機械中的可能應用進行了探討，給出了混合工質的普朗特數等參數的計算方法，並進行了採用氦-氬混合工質的熱聲驅動脈管製冷機的實驗研究。
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