Enthalpy Posted July 12, 2020 Share Posted July 12, 2020 Hello nice people! Some objects moving against a gas or liquid, especially wind turbines, aeroplanes and water craft, include a vortex generator at their wing, fuselage or hull, usually before the body recesses. The vortices avoid or ease the "flow separation", so a wing lifts at higher angles of attack, and at fuselages, the drag decreases despite the vortices. wikipedia Heat exchangers can use them too. The common explanations are as undetailed as "turbulent flows separate later" or "introduce energy in the boundary layer". Consistently, usual designs of vortex generators are quite crude, as depicted below or with small variations. While quite a bit of experimenting was done in half a century, the generator's shape varied in small amounts, and the performance gain is limited. But maybe the items can be re-thought. I mean, re-thinking is always possible, but sometimes it improves something. 1 Link to comment Share on other sites More sharing options...
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