dimensionless equation 中文意思是什麼

dimensionless equation 解釋
無因次方程
  • dimensionless : 無量鋼的無維的，無度的
  • equation : n. 1. 平衡，均衡；平均，相等。2. 【數學】方程式，等式。3. 【天文學】（時）差；均分，等分。4. 【化學】反應式。
  1. Presents the equation of the characteristics of air vertical temperature distribution using the mean dimensionless excess temperature and ventilation efficiency as undetermined group and the other groups as determined ones

    用平均量綱一過餘溫度和通風效率（待定綜合量）與其他已定綜合量確定了室溫垂直分佈特徵的表達式。
  2. Firstly, based on n - s equation, the momentum differential equation （ contained centrifugal force ） is derived by simplification in boundary layer and then integrates the differential equation over the thickness of the boundary layer, the momentum integral equation is deduced. the dimensionless centrifugal factor is introduced, then the solution of the momentum integral equation is obtained. the dimensionless group is introduced to determined separation of boundary layer

    本文首先根據粘性流體力學的一般方程，通過在邊界層內進行量級比較，在所限定的范圍內得到了含有離心力的邊界層動量微分方程並給出其滿足的邊界條件，然後對該微分方程在邊界層內積分得到離心泵葉輪邊界層動量積分方程，在求解過程中引入了無量綱離心因子，並作了相應合理的假設，得出積分方程解的一般表達式，並引入以邊界層動量損失厚度為主要特徵量的無量綱參數對邊界層分離進行評價。
  3. Natural unit, dimensionless transformation, reducing and regaining constant of physical equation

    無量綱變換及常數的壓縮與恢復
  4. The end show that coefficient of convective heat transfer at thermal boundary condition is higher than that at definite heat flux boundary condition. if according to dimensionless equation of heat convection, nu number of the latter almost is mutiplied 1. 47 times of the formal, but the coefficient of convective heat transfer in tube between this two condition is almost equal

    研究結果表明:在實驗室中電加熱方式得到的管外對流換熱系數低於工程中傳熱條件下的管外對流換熱系數，若按傳熱準則式關系，後者的努謝爾特數約為前者的1 . 4倍;而管內的對流換熱系數在兩種邊界條件下的差別不大。
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