Tapering pipe paradox

Is it possible to drive an external air flow into an open pipe so that its exit speed is greater than before the entrance? Maybe it is possible, but what about the law of conservation of energy? This is a good question to think about. Key words: hydrodynamics, aerodynamics, ramjet engine, Bernoulli principle, Bernoulli equation, air intake. Thank you for your interest in our work! If you like what we do, please support our Patreon channel: https://www.patreon.com/GetAClass_eng Neural-translated. Our partners: https://airvoice.global Airvoice produces comprehensive air quality monitoring networks and services for urban areas; digital twins and monitoring networks to forecast and manage air quality for industries; indoor air quality monitoring and management system for buildings. https://dnair.in DNAir brings to the Indian market unique air supply technology for clean and healthy indoor climate. Breathe Himalayan-like air even in Central Delhi.