用python写水流沿程阻力损失
时间: 2023-07-18 19:44:54 浏览: 43
计算水流沿程阻力损失的公式如下:
$F_{fr} = f_D \cdot \frac{L}{D} \cdot \frac{\rho}{2} \cdot V^2$
$F_{el} = \rho \cdot g \cdot z$
$F_{total} = F_{fr} + F_{el}$
其中,$F_{fr}$ 是摩阻力,$f_D$ 是Darcy-Weisbach摩阻系数,$L$ 是长度,$D$ 是管径,$\rho$ 是密度,$V$ 是速度,$F_{el}$ 是水力势能,$g$ 是重力加速度,$z$ 是高度差,$F_{total}$ 是总阻力。
现在我们来编写一个 Python 函数来计算水流沿程阻力损失:
```python
import math
def friction_loss(fd, length, diameter, rho, velocity):
Ff = fd * length / diameter * rho / 2 * velocity ** 2
return Ff
def elevation_loss(rho, g, height_difference):
Fel = rho * g * height_difference
return Fel
def total_resistance(fd, length, diameter, rho, velocity, g, height_difference):
Ff = friction_loss(fd, length, diameter, rho, velocity)
Fel = elevation_loss(rho, g, height_difference)
Ft = Ff + Fel
return Ft
```
你可以使用这个函数来计算水流沿程阻力损失,例如:
```python
fd = 0.02
length = 1000
diameter = 1
rho = 1000
velocity = 2
g = 9.8
height_difference = 10
Ft = total_resistance(fd, length, diameter, rho, velocity, g, height_difference)
print(Ft)
```
这将输出水流沿程阻力损失的值。