普朗特数 meaning in Chinese
prandtl number
Examples
- Magnetic prandtl number
磁普朗特数 - 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
本文认为该修正模型并不适用于水库浮力流的模拟，建议在大型深水库水温模型中温度普朗特数采用常值0 . 85 。 - First of all , we discussed the matching problems between a thermoacoustic prime mover and a pulse tube refrigerator , which is very important due to the remarkable differences between the operating characteristics of the two separate parts , such as operating frequency , pressure ratio , and phasing
此外，还从普朗特数、频率和脉管性能等方面入手，探讨了氦氖混合工质在热声驱动脉管制冷机系统中的作用效果，并进行了实验研究。 - The nusselt and sherwood numbers increase with the increasing buoyancy ratio of b . when b reaches bmin , nusselt and sherwood numbers are attained minimum . the value of buoyancy ratio bmin which is a function of pr / sc increase with the increasing pr / sc and bmin varies drastically when 0 < pr / sc < 2
流体速度和热质传递速度出现最小值时即nusselt数和sherwood数为最小值时的浮力比为b _ ( min ) ，它是普朗特数和施米特数之比pr / sc的函数，随pr / sc的增大而增大。 - 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
通过恒壁温实验探讨了传热温差、液膜雷诺数、普朗特数这些主要因素对伞板式降膜蒸发器传热性能的影响，通过对以上影响因素的分析，得出了此种结构的蒸发器特别适用于小温差情况下的蒸发，而且特别适用于热敏性物料的蒸发等特性。