Flow Over Bicycle Using Python

Objective

• To plot Drag force vs Velocity
• To plot Drag force vs Drag Coefficient

Description

In this Program I have created two codes one is to calculate the Drag Force by keeping the Drag Coefficient constant and other is to calculate the Drag Force by keeping the Velocity constant.

# Program to Calculate the Drag Force keeping Drag Coefficient constant by Venkat
 
import matplotlib.pyplot as plt

# Inputs

c_d = 0.8

A = 1

rho = 1.2

velocity = [5,6,7,8,9,10,11,12,13,14,15]

drag_force = []

# Loop

for v in velocity: 

    drag_force.append((0.5*c_d*A*rho*v*v))

print(drag_force)

plt.plot(velocity,drag_force)
plt.xlabel(\'Velocity\')
plt.ylabel(\'Drag Force\')
plt.show()

Velocity vs Drag Force

# Program to Calculate the Drag Force keeping Velocity Constant by Venkat

import matplotlib.pyplot as plt

# Input

c_d = [0.5,0.6,0.7,0.8,0.9,1.0,1.1,1.2,1.3,1.4,1.5]

A = 1

rho = 1.2

velocity = 10

drag_force = []

#Loop

for c in c_d:
 
  drag_force.append((0.5*c*velocity*velocity*A*rho))

print(drag_force)

plt.plot(c_d,drag_force)
plt.xlabel(\'Drag Coefficient\')
plt.ylabel(\'Drag Force\')
plt.show()  

Drag Coefficient vs Drag Force