Fluss

Ebene

import numpy as np

# Fläche
A = 1

# Vektor
U = 2

print(A*U)

Zylinder

Feld senkrecth auf Mantel und parallel zu Boden

import numpy as np

# Radius
r = 1

# Höhe 
h = 2
#Vektor
U = 2

print(2*np.pi*r*h*U)

Feld senkrecht zu Boden

import numpy as np

# Radius
r = 1

#Vektor
U = 2

print(2*np.pi*np.power(r,2)*U)

Kugel

import numpy as np

# Radius
r = 1

#Vektor
U = 2

print(4*np.pi*np.power(r,2)*U)