Making the Ioniq slippier

[Phase]

Interesting aero patterns over rear of the car

[aerohead]

The paper I have is from the 8th International Conference on Advanced Concepts in Mechanical Engineering, IOP Conference Series: Materials Science and Engineering 444, 2018.
--------------------------------------------------------------------------------------
And it's only for rear wheel arches.
--------------------------------------------------------------------------------------
The study was in CFD, using the Lattice Boltzman simplified microscopic mathematical method.... particle velocity distribution function, in discrete time steps, time-averaged motion, consistent with the Navier-Stokes equation.
--------------------------------------------------------------------------------------
The virtual model is a hatchback with 195/ 55R-16 tires, with Cd 0.377.
1) with the gap closed down to the outer diameter of the tire, the drag dropped to Cd 0.367, delta- 0.011 ( 2.65% ).
2) with the gap closed down to the diameter of the 'rim/wheel', the drag dropped to Cd 0.364, delta - 0.013, ( 3.44% ).
3) with a full skirt, delta- 0.024, ( 6.36% )
-------------------------------------------------------------------------------------
In 2012,Coventry University studied an Audi A3 hatchback, Cd 0.316.
1) rear skirts gave Cd 0.310, delta- 0.006, ( 1.89% ).
2) front skirts gave Cd 0.303, delta- 0.013, ( 4.1% ).
3) front & rear skirts gave Cd 0.294, delta- 0.022 ( 6.96% )
--------------------------------------------------------------------------------------
The Audi, a 1936 Adler-Jaray, and 1983 Ford Probe-IV all indicated for a greater drag reduction for a modified front wheel, compared to their respective rear wheels.
Front gap-fillers might trend the same way.
Additional research would help nail that down.

[Phase]

Originally Posted by aerohead

The paper I have is from the 8th International Conference on Advanced Concepts in Mechanical Engineering, IOP Conference Series: Materials Science and Engineering 444, 2018.
--------------------------------------------------------------------------------------
And it's only for rear wheel arches.
--------------------------------------------------------------------------------------
The study was in CFD, using the Lattice Boltzman simplified microscopic mathematical method.... particle velocity distribution function, in discrete time steps, time-averaged motion, consistent with the Navier-Stokes equation.
--------------------------------------------------------------------------------------
The virtual model is a hatchback with 195/ 55R-16 tires, with Cd 0.377.
1) with the gap closed down to the outer diameter of the tire, the drag dropped to Cd 0.367, delta- 0.011 ( 2.65% ).
2) with the gap closed down to the diameter of the 'rim/wheel', the drag dropped to Cd 0.364, delta - 0.013, ( 3.44% ).
3) with a full skirt, delta- 0.024, ( 6.36% )
-------------------------------------------------------------------------------------
In 2012,Coventry University studied an Audi A3 hatchback, Cd 0.316.
1) rear skirts gave Cd 0.310, delta- 0.006, ( 1.89% ).
2) front skirts gave Cd 0.303, delta- 0.013, ( 4.1% ).
3) front & rear skirts gave Cd 0.294, delta- 0.022 ( 6.96% )
--------------------------------------------------------------------------------------
The Audi, a 1936 Adler-Jaray, and 1983 Ford Probe-IV all indicated for a greater drag reduction for a modified front wheel, compared to their respective rear wheels.
Front gap-fillers might trend the same way.
Additional research would help nail that down.

ive seen those studies. was wondering how much of a reduction they would be on my car with a much lower drag coefficient compared to their above 30 cds and what type of MPG increase id get from filling in the front wheels

[Phase]

Did a 20 mile stretch from north of Eugene to Corvallis On the flat Willamette valley last night in calm conditions. Cruise control set to 55-56. Mpg averaged out at 90-91 mpg at that speed. Really inside. Sadly average mpg drops to the mid 50s once I speed up to 75 mph to go with the flow of traffic

[freebeard]

Speaking of the Willa-metty Valley:

https://agilityrobotics.com › news › 2023 › opening-robofab-worlds-first-factory-for-humanoid-robotsnbsp
Opening RoboFab: World's First Factory for Humanoid Robots — Agility ...
18 Sept 2023CORVALLIS, OR - September 18, 2023 - Agility Robotics, creator of the groundbreaking bipedal robot Digit, today revealed that the company is opening RoboFab ™, a robot manufacturing facility in Salem, Oregon with the capability to produce more than 10,000 robots per year.

https://essinc.com › about
About | ESS, Inc.
Based in Wilsonville, Oregon, ESS Inc. was founded by a team with deep experience in fuel cells, electrochemistry, advanced material science and renewable energy.
News & Events
ESS newsroom: Latest news, press release, podcasts & recordings, and home of the ESS Inc. blog; Go with the Flow.

Iron Flow Chemistry
ESS uses the same electrolyte on both the negative and positive sides of the...

What a place to be alive.

[Phase]

hero shot of the car with fins. only test mod im doing diff since taking this pic is duct tape over the little openings of the front wheel covers. lower temps outside let me try 100 percent full coverage with no ventilation

[aerohead]

Sweet!

[hayden55]

Heck yeah. I feel like im reading a 2013 era ecomodder thread. Thats awesome

[Phase]

https://youtu.be/fPV1FE-0UOE?si=xtjkKgaFxjpKUz4H

video break down and citing some studies and showing the 20 mile test road in real time!

[freebeard]

You've got the idea on the back of the skirts; but IMHO the front of the skirt should follow the door cut line.