<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>exDM69</author><text>This is very interesting stuff. Look at the images labelled &amp;quot;velocity slice at ground plane&amp;quot; and &amp;quot;on the top side of the floor&amp;quot;. You can clearly see the &amp;quot;Y250 Vortex&amp;quot; going between the front wheels and out around the barge boards.&lt;p&gt;This vortex structure exists because the front wing main plane needs to be flat for +&amp;#x2F;- 250mm at on the Y axis from the center line. In order to get the outwash to the barge boards and around the rear wheels, the front wing needs to generate a huge vortex right where the wing starts.&lt;p&gt;You can see the Y250 Vortex structure in this old footage from Mark Webber driving the RB9 in humid conditions where it forms a condensation trail as the air pressure drops:
&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=ZlDnd3B1rhs&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=ZlDnd3B1rhs&lt;/a&gt;</text><parent_chain></parent_chain></comment><story><title>2021 Williams F1 Computational Fluid Dynamics</title><url>https://maxtayloraero.wordpress.com/2021/04/21/2021-williams-f1-cfd/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>cmsparks</author><text>One note about the aero research rules in F1 which makes this post particularly interesting: there are limitations on the amount of CFD simulation time teams can use.</text><parent_chain></parent_chain></comment><story><title>2021 Williams F1 Computational Fluid Dynamics</title><url>https://maxtayloraero.wordpress.com/2021/04/21/2021-williams-f1-cfd/</url></story>