jens/we_collect
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

refactored

Browse Source
This commit is contained in:
jens
2025-03-30 13:10:48 +02:00
parent 7eb0ab96ef
commit 8eaafb6bda
6 changed files with 109 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files
luftwiderstand.py
+54 -52
View File
@@ -54,7 +54,6 @@ car_list = [
def rho(temperature_degc: float, p_pa: float =g_p0):
return p_pa/(g_RS*(temperature_degc + 273.15))
# Force : N = kg·m·s2
def fd(rho: float, velocity_kmh: float, c_val: float, area: float):
vel = velocity_kmh / 3.6
@@ -62,63 +61,66 @@ def fd(rho: float, velocity_kmh: float, c_val: float, area: float):
res = 0.5*rho*vel*vel*cwa
return res
def main() -> None:
# Fd vs. velocity, param: temperature
temps_list = [-20, -10, 0, 10, 20, 30]
vel_list = [20, 40, 60, 80, 100, 120, 130, 140, 160]
reference = fd(rho(20), 100, c_val_id3, area_id3)
temps_list_leg = [f"{t}°C" for t in temps_list]
# Fd vs. velocity, param: temperature
temps_list = [-20, -10, 0, 10, 20, 30]
vel_list = [20, 40, 60, 80, 100, 120, 130, 140, 160]
reference = fd(rho(20), 100, c_val_id3, area_id3)
temps_list_leg = [f"{t}°C" for t in temps_list]
plot.figure()
for temp_degc in temps_list:
rho_t = rho(temp_degc)
y_fd = []
for vel_kmh in vel_list:
fd_t = (fd(rho_t, vel_kmh, c_val_id3, area_id3)/reference - 1) * 100
y_fd.append(fd_t)
plot.figure()
for temp_degc in temps_list:
rho_t = rho(temp_degc)
plot.plot(vel_list, y_fd)
plot.title("Windwiderstand vs Geschwindigkeit")
plot.ylabel("Windwiderstand [%]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.legend(temps_list_leg)
plot.grid()
# Fd vs. velocity, param: car
temp = 20
vel_list = [20, 40, 60, 80, 100, 120, 130, 140, 160]
car_list_leg = [f"{t['car']}" for t in car_list]
rho_t = rho(temp)
reference = fd(rho_t, 100, c_val_id3, area_id3)
plot.figure()
for car in car_list:
y_fd = []
for vel_kmh in vel_list:
fd_t = (fd(rho_t, vel_kmh, car['cw'], car['area'])/reference - 1) * 100
y_fd.append(fd_t)
plot.plot(vel_list, y_fd)
plot.ylabel("Windwiderstand ID.3 [%]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.title("Windwiderstand vs Geschwindigkeit")
plot.legend(car_list_leg)
plot.grid()
plot.figure()
y_fd = []
for vel_kmh in vel_list:
fd_t = (fd(rho_t, vel_kmh, c_val_id3, area_id3)/reference - 1) * 100
fd_t = fd(rho_t, vel_kmh, c_val_id3, area_id3)
y_fd.append(fd_t)
plot.plot(vel_list, y_fd)
plot.title("Windwiderstand vs Geschwindigkeit")
plot.ylabel("Windwiderstand [%]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.legend(temps_list_leg)
plot.grid()
plot.ylabel("Windwiderstand [N]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.title("Windwiderstand vs Geschwindigkeit")
plot.legend(car_list_leg)
plot.grid()
plot.show()
# Fd vs. velocity, param: car
temp = 20
vel_list = [20, 40, 60, 80, 100, 120, 130, 140, 160]
car_list_leg = [f"{t['car']}" for t in car_list]
rho_t = rho(temp)
reference = fd(rho_t, 100, c_val_id3, area_id3)
plot.figure()
for car in car_list:
y_fd = []
for vel_kmh in vel_list:
fd_t = (fd(rho_t, vel_kmh, car['cw'], car['area'])/reference - 1) * 100
y_fd.append(fd_t)
plot.plot(vel_list, y_fd)
plot.ylabel("Windwiderstand ID.3 [%]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.title("Windwiderstand vs Geschwindigkeit")
plot.legend(car_list_leg)
plot.grid()
plot.figure()
y_fd = []
for vel_kmh in vel_list:
fd_t = fd(rho_t, vel_kmh, c_val_id3, area_id3)
y_fd.append(fd_t)
plot.plot(vel_list, y_fd)
plot.ylabel("Windwiderstand [N]")
plot.xlabel("Geschwindigkeit [km/h]")
plot.title("Windwiderstand vs Geschwindigkeit")
plot.legend(car_list_leg)
plot.grid()
plot.show()
if __name__ == '__main__':
main()