Where's Julian?
 

I don't stay up on the day to day soap opera dramas, and don't care to, so in a nutshell, where is Julian?

Things did seem to be getting off the rails lately, and getting personal, I get that, but passion in check, is often an asset, until it isn't.

I'm a believer in "All opinions matter, just some more then others".:D

It shows he was on June 30th. Probably just busy. The way he talks make it sound like he is on multiple forums dealing with aero and fuel economy. Plus his youtube channel.

Julian really adds a lot to discussions regarding what works and what doesn't.

He proves his points via actual testing and actual measurements on actual cars.

Otherwise, there's only theory and armchair speculation to go on. I'm afraid he's got little patience for that.

OK then, I'll move on.:thumbup:

But one remark gets my attention:

Seldom do people disagree on actual test results, the devil is in what exactly those test results reveal, and that is often the subject of much contention. Then we add confirmation bias, which is part of human nature, and things get complicated. I like to decide for myself the veracity of what I am told the results reveal.

Don't misunderstand my point here, any tests properly implemented, organized, and shared, are hugely valuable and welcomed.

Apart from occasionally checking PMs, I have decided to no longer contribute to the forum.

I really enjoy reading your posts. Don't forget most members here don't even have an account. And I'm sure most of them will be sad to see you go.


https://imgur.com/AGdCu7R.png


https://i.imgrpost.com/imgr/2020/07/04/x_men3.jpg

Well, can't say I didn't see this coming.

Sometimes just taking a break is best for everyone.
If ever you decide to return, the community here will be better for it.
Not sure if many will admit that.
Everybody is important here, and nobody is above scrutiny.

Yep, I agree.

The thing about most of Julian's testing results is that he gets the objective empirical data, ie the numbers from the gauges, that show what's going on, and he tells others how to replicate his tests so they can test for themselves exactly what he's done; something like scientific peer review that we all can do if we make the effort.

As an example, his Throttle Stop idea is golden. I mean, what could be more simple than to use it to objectively show the effects of windows up / windows down on a car's aerodynamics? It's far superior to the coast-down method; it instantly shows the effects at constantly maintained speeds that we travel at rather than constantly decaying speeds that is less applicable to everyday use. And it can be accomplished repeatedly and constantly within a matter of a few seconds without trying to measure the distance traveled etc. Brilliant.

JulianEdgar — I wondered if you could keep up that pace. If you have another stroke of genius, please do a hit-and-run post to drop some hint. TIA

Thank you for your good work.

I have been away from the forum for a while working on other projects, but it seems I have missed a gem of a contributor. I see above someone had said he may have a YT channel? If it isn't against the rules can someone post a link or at least give me the name of the channel? I would love to see this type of testing.

Like many others have said JulianEdgar, if you decide to come back the site will be better for it.

Thank you for all you have posted. I'm going to start working my way through it.

Not hard to find, the channel is under his own name.

https://www.youtube.com/channel/UCK9...mNB9XEmuiCjxcQ

I need to catch up there.

https://i.ytimg.com/vi/sazjhukVgm4/h...7XJUSywTr0_ydQ

theres a lot of great info in that channel, ive been watching with much anticipation for the next episode and have got many ideas already

Thanks.

I didn't realize it was under his name. Thought is might have a really cool techy name. Time to hit up YT.

There's a button for that. ...[he says uncaringly.]

I'll click ya a thanks, hey! lol

EDIT: two!

Two new patents on front-end car airflow Jul 11, 2020

The first patent is for a double-layered hood that sucks on the top of the stagnation point, shown in elevation at 0:45. It reminds me of some Ecomodder thread where it was suggested (to feed the base of the windshield not suck on the stagnation point) but the poster was shot down over interference drag and 3x skin friction.

In this case the duct is a converging/diverging hourglass shape in plan.

The second patent discloses an impractically large radiator duct that the first patent powers in a sort of Meredith Effect.

It is an interesting video, it seems a bit like an air curtain over the radiator exit when there is no flow. It wouldn't be too difficult to create a duct like that on top of a hood to promote better attachment, but what downstream effects would it have in terms of boundary layer thickness?

Or would the duct need to start in the stagnation zone to get a high enough pressure?

The later illustration shows the duct buried in the hood. To preserve the driver's sight-lines?

It definitely starts in the stagnation area — I have no idea what happens when you 'cross the streams'.

edit:
Presaging teoman: Oh look — first post [welcome]

I'm imagining a 1950 Ford, with the radiator tilted back (electric fan in front), a duct on the underside of the hood (lots of headroom with a flathead V-8) and louvers all over the back half of the hood.

Satin black with red wheels. :)

Welcome to the forum AeroMcAeroFace.

Is this Julian posting under a pseudonym?

Cover Blown
 

I can assure you I am not Julian, I think it is the middle of the night in australia as I post, both now and before. I am in the UK, hence the name based on BoatyMcBoatface.

I did enjoy his posts here though, it made the aerodynamics section a bit more active, it was only the "Interesting Aerodynamic Cars (Mike Vetter's ETV, also Avion)" thread was updated most of the time. Maybe not enough people were doing builds.

Edit: not enough people are posting builds on the aerodynamic thread

A lot of the build threads are posted in Ecomodder central. I usually just go to recent posts at the top of the page though.

It was a reasonable theory. The First Post was thoughtful.

If you need an avatar, I don't know if this is in the public domain but there must be some similar:
http://cdn.iflscience.com/images/638...mcboatface.jpg
https://www.iflscience.com/environme...tic-adventure/

I couldn't find one that would scale, so a bit of work in microsoft paint and I now have an avatar, but that is off the topic.

I can't work out whether the point of the vent is to reduce the area of low pressure that stagnates and thus create two stagnation points but of lower total drag, or whether it is to reduce the separation/promote flow attachment on the hood. In one thread here there was something about the prius with the bulge to encourage separation wasn't there?