Wind Tunnel Free vs Boldmethod

Turn your iPad/iPhone into a wind tunnel simulator ! Draw obstacles and watch the fluid flow around. Experiment with different sizes, shapes, aerodynamic profiles and see what happens ! Tap the blue button to bring application controls. Three segmented controls let you choose between: • 4 touch actions:  interact with the fluid, draw walls, insert smoke probe, use eraser tool. • 4 visualization modes:  particles, smoke, pressure field, velocity field. • 2 simulation modes:  wind tunnel (with adjustable wind speed), free mode (with no constrained wind). If you are interested in more options, check out Wind Tunnel, the paid version of this app, with many more features! New in version 1.5.1: - updated for iOS 9 New in version 1.5: - improved retina graphics - new simulation engine for dual-core devices - iPhone 5 support - other graphic improvements New in version 1.3: - Much more accurate fluid simulation engine. - Visualization of velocity field, with this color scheme : black (fluid at rest), blue, red, yellow (highest speed). - New preset models (try "swirl" !). - Ability to change smoke color : in "interact" touch action and "smoke" mode, double tap on the smoke source, at the top of the screen - Fixed bugs on boundary conditions. New in version 1.2: - Added support for older iphones and ipod touch (armv6) - Minor bug fixes - Added models of the "Lite" version Fluid motion is computed by solving Navier-Stokes equations, at high definition ( 23000 grid cells on ipad ) thanks to a well-optimized code taking the most out of CPU performance. Thank you all for your great comments.

Want to improve your piloting skills? Then the Boldmethod app is for you. With over 50 hours of videos and online training courses, you'll walk away with the knowledge that makes you a better pilot. Access your Boldmethod training courses in one app, watch the latest training videos, and test your knowledge with quizzes. What's new? The Feed and Challenges tabs are the place to start learning or to brush up on your aviation knowledge. When you're ready to take the next step, sign up for courses to truly master your pilot knowledge. MASTERING TAKEOFFS AND LANDINGS Do you have a perfect landing every time? Neither do we. This video course helps you master your takeoffs and landings. Whether you're trying to stop floating past your landing point or trying to smooth out your touchdown, you'll learn how to fix any of your takeoff and landing problems with this simple-to-use online course. The course breaks down takeoffs and landings into sections: Normal Takeoffs Traffic Patterns Normal Landings Crosswind Takeoffs and Landings Short Field Takeoffs and Landings Soft Field Takeoffs and Landings Non-Standard Takeoffs and Landings Night Takeoffs and Landings NATIONAL AIRSPACE SYSTEM Our airspace course covers everything you need to know about the National Airspace System, including Class A-G airspace, Special Use Airspace, and Other Airspace. It's an excellent way to prepare for your private pilot checkride and keep your flying skills sharp. The course breaks down airspace into sections: Class A airspace Class B airspace Class C airspace Class D airspace Class E airspace Class G airspace Special use airspace Other airspace AVIATION WEATHER REPORTS AND FORECASTS Our weather course covers everything you need to know about aviation weather, including METARs, TAFs, Pilot Reports, Graphical Forecasts For Aviation, Winds Aloft Forecasts, AIRMETs, SIGMETs, and Convective SIGMETs. It's an excellent way to prepare for your private pilot checkride and keep your flying skills sharp. The course breaks down aviation weather into sections: METARs TAFs PIREPs Graphical Forecasts For Aviation Winds Aloft Forecasts AIRMETs, SIGMETs, and Convective SIGMETs VFR CHARTS AND PUBLICATIONS Our charts course covers everything you need to know about VFR charts and publications, including sectional charts, terminal area charts, the Digital Chart Supplement, and NOTAMs. The course breaks down publications into sections: Sectional Charts Terminal Area Charts Digital Chart Supplement NOTAMs MOUNTAIN WEATHER Do you want to feel more comfortable flying around the high country? Boldmethod's Mountain Weather course helps make that happen. You'll learn how to evaluate mountain weather during your planning and while you're in flight. You'll also learn how terrain generates updrafts, downdrafts, turbulence, and storms, and changes the direction of the wind throughout the day. The course breaks down weather into sections: Mountain Waves Strong Surface Winds Updrafts, Downdrafts, And Turbulence Convergence Zones Coastal Mountain Wind Systems The North American Monsoon Daily (Diurnal) Winds In Valleys Mountain Thunderstorms