overall i think there is not much optimization possible, the factory drag coefficient of 0.27 is already really good.
i mainly want to find out how much effect lowering the car or changing the wheels can have on the efficiency.
Looks like you need a much larger boundary box for the simulation to be representative. You need effectively infinite headspace to simulate airflow over the car.
Drag coefficient of 0.27, is it declared by Honda or from this simulation? I thought it's higher, since they sacrificed this for its form and aesthetic.
the colors are green for 100km/h wind, red is faster wind, and blue slower wind.
i made some further tests, especially a comparison of standard ride height, and 30mm lowered ride height:
depending on different settings, the simulation gives the 30mm lowered version 6-7% less drag, and 15-30% more downforce, which is quite a bit!
based on the cw of 0.27 and a frontal area of 2.5m i get an air resistance of 312.325Newtons.
at 100km/h, this are 8,673 kW spent on air resistance.
therefore, a reduction of 6% air resistance should save 0,520 kWh per 100km at 100km/h.
taking the average official highway-efficiency of 18,38kWh/100km, this would give you a range boost of 2,82%, so 4,38km extra.
i always wondered how much the ride height affects efficiency, so now this estimate is saying a little bit, but not a huge amount!
Look good and your result seems plausible compared to claims from other brands.
On top of the aerodynamic gain you can add a bit of drivetrain efficiency gain - less power at speed = lower losses in electrical, mechanical and rolling resistance. It always a positive (or negative) spiral effect on such changes
The drag coefficient in the linked article refers to the Fireblade motorcycle. The drag coefficient of the Honda e is not mentioned.
I've tried to find an official figure myself, but can't seem to find it. I could only find an estimated figure of 0.35 on the Automobile-Catalog website.
The drag coefficient in the linked article refers to the Fireblade motorcycle. The drag coefficient of the Honda e is not mentioned.
I've tried to find an official figure myself, but can't seem to find it. I could only find an estimated figure of 0.35 on the Automobile-Catalog website.
Once on an Italian car review channel I saw that they wrote 0.35 too, so it is more likely 0.35
