tag:blogger.com,1999:blog-2239944414177437471.post2104282349882144371..comments2024-03-28T16:47:18.956+00:00Comments on SomersF1 - The technical side of Formula One: Red Bull - Valencia GP - Technical AnalysisMatthew Somerfieldhttp://www.blogger.com/profile/13759263537936706584noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-2239944414177437471.post-6565108732910336862012-07-06T20:23:18.427+01:002012-07-06T20:23:18.427+01:00The magnus effect by definition creates a boundary...The magnus effect by definition creates a boundary layer and I didn't say it only creates lift. I said it 'can' create lift I didn't say that was it's only function. In usual circumstances the driveshaft should create downforce but we aren't dealing with a laminar flow due to the exhaust flows interaction in 2012. This is more likely the reason for Red Bulls adoption of SomersF1http://www.somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-20098656080881484312012-07-06T06:43:10.659+01:002012-07-06T06:43:10.659+01:00You incorrectly assume the Magnus affect only crea...You incorrectly assume the Magnus affect only creates lift also incorrectly assume the Magnus affect creates a thick boundary layer.<br /><br />First study cylinders in flows at different Reynolds numbers, then study the Magnus effect...!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-45546127215178095702012-06-28T13:33:17.687+01:002012-06-28T13:33:17.687+01:00Buck-O
From your initial paragraphs description I...Buck-O<br /><br />From your initial paragraphs description I assume you mean the curvature of the gurney flap at the extremities down onto the diffuser endplates. Ferrari have designed their Gurney Flap in the same way, as the flap is not a rigid component like for example the Caterham one the flap acts like a wing, both creating downforce but not to the extent of stalling the airflow / creatingSomersF1http://www.somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-32341323240401871122012-06-27T23:19:05.657+01:002012-06-27T23:19:05.657+01:00Looking more at the rear end, and examining some o...Looking more at the rear end, and examining some other pictures, i noticed that there are two holes off of the trailing edge of the diffuser flap/turning vane. At first i thought it was an anomaly with the picture, but ive seen it on several different rear end shots, and at different angles as well.<br /><br />Im curious to understand why they are there. They are in direct alignment with the Buck-Onoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-23775037078627721152012-06-27T14:31:55.408+01:002012-06-27T14:31:55.408+01:00Great stuff this. Cannot contribute as I'm jus...Great stuff this. Cannot contribute as I'm just a humble mech eng (CEng). Just watch and learn, Fraser, watch and learn.David Frasernoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-18528811345524034582012-06-26T18:34:42.101+01:002012-06-26T18:34:42.101+01:00Don't worry mate I understand exactly where yo...Don't worry mate I understand exactly where you're coming from and it is kinda what I'm trying to point people towards with this article.SomersF1http://somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-31436638882086576002012-06-26T14:49:22.881+01:002012-06-26T14:49:22.881+01:00The "holes" in the drive shaft shroud ar...The "holes" in the drive shaft shroud are nothing more than reflections of the strakes below. There are no holes there.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-49473595571989879282012-06-26T13:31:11.141+01:002012-06-26T13:31:11.141+01:00Well, while we are on the subject of throwing out ...Well, while we are on the subject of throwing out ideas, and sparking debate, how about this?<br /><br />Going by this picture...<br /><br />http://www.formule1.nl/media/uploads/media_images/2012-06-24/racepictures_1340559813.28.jpg<br /><br />And looking further at pictures of the floor, and the placement of the tunnel openings. It looks like the smaller, rearward, square opening tunnel is the Buck-Onoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-89307744562755246692012-06-26T12:40:14.076+01:002012-06-26T12:40:14.076+01:00Buck-O
I agree that they do look like reflections...Buck-O<br /><br />I agree that they do look like reflections of the strakes and did ponder whether to actually post about the ejector holes because of that. However sometimes I feel that you need to get these thoughts out there to spark the debate and see what others think on the subject. I'm going to look back through photos from previous races later when I'm at my laptop and not iPhone SomersF1http://somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-78447720628400058772012-06-26T12:01:16.828+01:002012-06-26T12:01:16.828+01:00I do not believe those are "ejector holes&quo...I do not believe those are "ejector holes", i think what you are seeing is merely a reflection of the three top of floor mounted vanes/strakes (clearly visable in the first floor off tunnel entry hole picture) on the underside of the driveshaft cowling.<br /><br />I also dont think the cowlings are doing anything particularly exotic. If you look at the rear end pictures of the car, you Buck-Onoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-68737143343910689502012-06-26T11:31:00.278+01:002012-06-26T11:31:00.278+01:00I have edited that section to be more expansive. T...I have edited that section to be more expansive. The problem with exhaust plume manipulation is it isn't an exact science and although CFD and Wind Tunnel can show one result in the real world another may be attained.<br />Flowing the exhaust plume into the rotational force of the driveshaft may move the stagnation point and create lift instead of downforce. As I've mentioned in the more SomersF1http://somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-91138051869569694452012-06-26T05:29:06.737+01:002012-06-26T05:29:06.737+01:00Actually the Magnus effect creates downforce when ...Actually the Magnus effect creates downforce when the car is moving forward.Anonymoushttps://www.blogger.com/profile/15321232797797565789noreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-80167347759323716762012-06-25T22:51:10.349+01:002012-06-25T22:51:10.349+01:00Brian
The three flows I mention are working in un...Brian<br /><br />The three flows I mention are working in unison to try and replicate the EBD airflow pattern IMO.<br /><br />The tunnel is acting almost like the extra deck space did on the DDD's only the airflow isn't being robbed from the expansion area of the diffuser allowing for potentially even more airflow to be pulled through the diffuser as a result of the increased airflow SomersF1http://somersf1.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2239944414177437471.post-44626482465364204892012-06-25T19:17:25.540+01:002012-06-25T19:17:25.540+01:00"Due to the way the 3 flows interact (Diffuse..."Due to the way the 3 flows interact (Diffuser, Tunnel & Over bodywork) the diffuser is sealed much further outbound than has been possible so far this season. Being able to seal the diffuser is imperative to the way in which the tyre squirt interacts laterally with the diffuser flow"<br /><br />I do not appreciate this statement, can you expand. I do understand how the new duct Brian Hardingnoreply@blogger.com