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雷诺数
Introduction
惯性力的比值是这类数值的重要组成部分。与粘性力相关的惯性力在这方面是相关的。雷诺数的计算公式为雷诺数=惯性力/粘性力。这个公式也表示为$mathrm{R_e:=：
What is Reynolds s number?
这些数字以Osborne Reynolds的名字命名，用于测量流体流量。飞机的运动是识别这些数字过程中的重要组成部分。雷诺数是有助于计算流体和流动的粘度和速度的重要部分（Baidya等人2021）。在高结果的情况下，预计通过管道的流动将是湍流。在低结果的情况下，预计流动在本质上是层流的。
Figure 1: Laminar Flow
根据不同的范围，预计湍流和层流将被相应地分类。在雷诺数中，层流降到1100以下。在湍流的情况下，雷诺数下降到2200的范围内。这个范围对于描述雷诺数的性质和特征非常重要。
Characteristics of Reynolds number
雷诺数被广泛用于确定流体的性质。流体的性质可能与各种成分不同。流体在本质上可以是湍流的或层流的。2100以下的数值范围等于层流，而大于2100的数值在本质上是湍流（Grossmann，Lohse&；Sun，2019）。细胞中心的速度也是有助于指示细胞数量的重要部分。雷诺数的组成和性质取决于一些重要因素。压力是影响雷诺数总体特征的因素之一。
Figure 2: Turbulence Flow
在理想气体的情况下，周围环境的温度和压力是重要的。主流速度和特征长度是直接影响雷诺数的另外两个重要因素。近年来，雷诺数被广泛使用。在模拟每个不同生物在水中游动的显著运动时，使用了雷诺数。在预测层流的形成和向湍流的转变时，雷诺数被广泛使用（Lee和Moser，2019）。借助雷诺数可以缩放不同类型的流动情况。主要的三种流动类型与这些数字的特征有关，即层流、过渡流和湍流。雷诺数也用于保持适当的流量，这有助于防止不同生物膜的形成。
Importance of Reynolds number
雷诺数在流体流动情况下的重要性非常高。它在电气设备以及电路和其他机械体等其他用途中有多种应用。雷诺数用于预测机械设备在几种类型的流体流动情况下流动的可能性（Lee和Moser，2019）。根据雷诺数层流和湍流，可以看到两种主要的流动类型。
Figure 3: The formula for Reynolds number
在雷诺数较高的情况下，湍流主导着流动，并有助于准确预测流体流动情况下可能的流动模式。雷诺数也由粘性力方面不同类型内力的速率决定（Saritha，&；Banerjee，2019）。在层流情况下，雷诺数小于1100，而在湍流情况下，雷诺兹数大于2200。
Apppcation of Reynolds number
该数字系统的应用指导包括在风洞中应用的最佳可能性，以指导研究不同表面的各种空气动力学特性（Singh&；Frankel，2020）。雷诺数应用中的另一个重要应用非常有帮助，特别是在超音速飞行中，飞机周围的空气密度局部增加。
Conclusion
就摩擦系数而言，数制非常适用。根据雷诺数，层流是一种非常分类的类型，其中流体沿着直线前进，而在另一种流体流中，流体不能平稳移动，流动模式也与不同的方向混合。雷诺数在流体力学的几个方程的摩擦系数计算中起着重要作用，这些方程也包括Darcy Weisbach方程。
FAQs
Q1.雷诺数的性质是什么
这个数字系统指导电气工程师准确地决定流动是层流还是湍流。在雷诺数较低的过程中，流动往往由层流主导。
Q2.雷诺数的公式是什么
$mathrm｛R_e:=：
Q3.雷诺数的计算过程是什么
雷诺数的计算过程包括流体速度与管道直径的乘积。该数字还除以运动粘度的值。
Q4.雷诺数有什么帮助
这个数字的应用也可以在生物体建模运动中看到，包括在水等液体颗粒中游泳。有时大气也被认为是流体，那么雷诺数对计算过程非常有帮助。