Channel: Samm Sheperd

Category: Science & Technology

Tags: planefluid mechanics (field of study)aircraftremote control (invention)vg'sstallsamm sheperdspanwise flowaerodynamics (field of study)pressure draginduced dragautomotive aerodynamicsvortex generatorsvirtual wind tunnelmicro vgscratch build rc

Description: Viewer Submitted VG design in the wind tunnel: youtube.com/watch?v=_wOIALPBrwk Some more thoughts as I think of them: In short: What they do: They help air flow around things (shrink the wake/separation bubble) and help air stay attached to wings at large angles of attack. How they do it: They "energize" the boundary layer by mixing the slow layers with fast layers. Vortex generators are nothing fancy. Any little fin sticking in the air at an angle to the wind will work. there are even other non "fin" type objects that work. (like an "air tab") The back side of a cyliner or my rear windshild can be thought of like a wing at a high angle of attack! Airflow separation and stalling an airplane wing are the same thing. Wings can stall also because of sharp leading edges, making the airflow separate suddenly up front instead of starting from the back. This leads to abrupt and "sharp" stall characteristics. Experimental Slat Plane youtube.com/watch?v=WH8kCTzy91A Featured plane build youtube.com/watch?v=aV5hILJe20U Inviscid flow ball allstar.fiu.edu/aero/Flow1.htm Moving inviscid flow ball en.wikipedia.org/wiki/Potential_flow_around_a_circular_cylinder Ideal flow vs Actual Flow studydroid.com/imageCards/0m/h7/card-23632917-back.jpg Boundary Layer: youtube.com/watch?v=7SkWxEUXIoM Ending Porsche in a wind tunnel youtube.com/watch?v=pplOtFq_2PY To see what I'm up to as it happens, follow me on instagram.com/sammsheperd If you feel like it supporting: patreon.com/samm_sheperd?... for monthly support youtube.com/nessfultude22 has fan funding enabled on the right side of the page Paypal email: sammshep@gmail.com