Reddit » Aerodynamics
1h ago
I´m unable to find any kind of NACA code for the 219´s airfoil, and I need some info about its lift and drag kind of urgently. Any web to search for it or anyone that can source it for me? Thanks in advance! submitted by /u/SnooGadgets3094 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/MousseFeeling8602
1d ago
This might be a really silly question so apologies in advance but how does one go about deciding what surface is concave and what surface is convex for an airfoil or similar object? I know concave surfaces cave inside and convex surfaces bulge outwards but in that case shouldn't both the surfaces of an airfoil be convex? Is this distinction done based on where the person is viewing the airfoil from? Also a follow up question being, does air accelerate over any curved surface? Or is it only the convex surfaces? Can someone actually explain the phenomenon here? Thanks! submitted by /u/MousseFe ..read more
Reddit » Aerodynamics
by /u/Fit-Bird-1601
2d ago
Trying to learn more about vehicle Aerodynamics.ive studied the basics. I'm trying to understand more on the approach and talent of aero engineers responsible for efficient EVs by design submitted by /u/Fit-Bird-1601 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/Sylverster_Stalin_69
2d ago
Can someone explain the design philosophy behind the rear wings which have such a design. The ends of the wing seem to be at a higher AoA compared to the one in the middle. I tried searching, but I wasnt able to find any solid explanation. ​ https://preview.redd.it/hcmnjgnjijkc1.png?width=391&format=png&auto=webp&s=e6d58c147ef6e8bc4e290ab3a1c140de2a36df24 submitted by /u/Sylverster_Stalin_69 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/MousseFeeling8602
3d ago
Does reducing the total pressure behind a wing by utilising a gurney flap or similar device actually delay separation? Is this because the flow on the suction side has to face a weaker adverse pressure gradient? How is the total pressure behind a wing generally decided? Is it the same as the freestream total pressure? submitted by /u/MousseFeeling8602 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/MousseFeeling8602
3d ago
Hi! I was going through some CFD post processing images for the flow over a car, and came across a delta CpZ contour. The reference said the higher value colour band represents lift surfaces while the lower value band represents downforce. The contour showed slightly higher values of delta CpZ on the bonnet. My question is, how is this producing lift? Doesn't the bonnet require to have a higher pressure than the leading edge of the floor so there's some front downforce? Am I analysing the concept of CpZ wrong? Thanks! submitted by /u/MousseFeeling8602 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/BottleSecure990
4d ago
Hello, I’m a masters student and in my masters thesis i chose to work on the aerodynamics of a NACA profile, the thing is my supervisor isn’t familiar with aerodynamics nor is he familiar with the literature so basically I’m going to have to guide myself through this so I’m seeking you guy’s help on introductory papers on NACA profiles from a theoretical point of view (whats the Cp and Cm…..) and some results for me to validate my simulation results with, please help me I’m lost. submitted by /u/BottleSecure990 [visit reddit] [comments ..read more
Reddit » Aerodynamics
by /u/ReedSacer
6d ago
Hi all, I'm starting uni and am looking to find a very low drag design for a small scaled solar powered car. The race is basically a straight line and one turn at the end. My question is as follows: if you look at any sports car construction now, every single one has a very low ground clearance as a result of the hardware required. In electric cars the lower part of the car houses the battery and so forth. Is it more aerodynamically efficient if you could construct a car that was off the ground and acted as a horizontally stretched teardrop basically? i.e a car that is the same width as a reg ..read more
Reddit » Aerodynamics
by /u/MrScotchyScotch
6d ago
So right off the bat, I realize my question is both dumb and way too complicated, and I apologize for that. But this is a serious question... I am in the process of designing a custom-built flat-bed cab-over truck camper (~11ft long, 7ft high, 79" wide) on top of a 2017 Ford F150). I am both dumb and nerdy enough to want to design it ahead of time to be aerodynamic to increase fuel economy. Since I am making it myself from scratch, I can give it curves that might be impractical for commercial builders. I don't expect a large fuel economy savings, but even 2mpg would be fantastic. So far I'm a ..read more
Reddit » Aerodynamics
by /u/PatientSail676
6d ago
To keep it brief, I'm making a complete floor on a 2005 Civic sedan for my graduation work out of high school and demonstrating its effects. Since I have such an opportunity, I would like to make it as extreme as possible. As I have found a company that will make it out of aluminium composite to any shape I want, feel free to suggest some wild ideas. My main goal is to make as much downforce as possible and demonstrate the Venturi effect. How big should I go with the splitter and the diffuser and Should I try to seal the floor to keep the air moving as fast as possible? It does not have to be ..read more

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