The study tests the feasibility of a 100-year-old patented device by the inventor.
Invented by engineer Nikola Tesla a century ago, the valve is not only more functional than previously realized, but today it has other potential uses as well. The research team discovered it after conducting a series of experiments on design duplication in the early 20th century.
The discovery reported in the journal Nature CommunicationsSuggests that Tesla’s device, which he called the “valvular conduit,” can use the vibrations of engines and other machinery to deliver fuel, coolant, lubricants, and other gases and liquids. I will.
The patented device, now known as the Tesla valve, is influencing strategies for directing streams in flow networks and circuits.
“It is worth noting that the invention of this 100 years ago is not yet fully understood and may serve modern technology in ways that have not yet been considered.” New York UniversityThe lead author of the Courtant Institute of Mathematical Sciences and the treatise. “Tesla is known as the Wizard of Electric Currents and Electrical Circuits, but his lesser-known work of controlling the flow of currents and fluids was truly ahead of the curve.”
The Tesla valve — a series of interconnected teardrop-shaped loops — was designed to allow fluid to flow in only one direction, with no moving parts. The device provides a clear path for forward flow, but slows the route for reverse flow. However, this latter drawback actually presents a potential unrealized advantage in situations where the flow needs to be controlled rather than unleashed.
To understand how the valve works, Ristorov and his co-author Quinn Nguyen, a graduate student in physics at New York University, and Joanna Abuezi, an undergraduate student at New York University at the time of the study, joined New York University. We conducted a series of experiments in the Applied Mathematics Laboratory at New York University. Here, they replicated the Tesla valve design and conducted tests to measure resistance to bidirectional flow.
Overall, they found the device to react a bit like a switch. At low flow rates, there is no difference in resistance between forward and reverse flow, but above a certain flow rate, the device suddenly turns “on” and significantly checks or resists reverse flow.
“Importantly, this turn-on involves the generation of turbulence in the opposite direction, which” blocks “the pipe with vortices and breaking currents,” explains Ristolov. “In addition, turbulence appears at a much lower flow rate than previously observed in more standard shaped pipes. Up to 20 times faster than conventional turbulence in cylindrical pipes or tubes. It shows the power needed to control the flow and can be used in many applications. “
In addition, they found that the valve worked even better when the flow was not stable, that is, when a pulse or vibration occurred. This transforms the device into a smooth, directional output flow. This pumping operation mimics an AC-DC converter that converts alternating current to direct current.
“I think this is what Tesla was thinking about for the device, because Tesla was thinking of a similar operation with electric current,” said Ristorov. “He is, in fact, most famous for inventing AC motors and AC-DC converters.”
Today, given the ability of valves to control flow and generate turbulence at low speeds, Ristolov sees the potential of Tesla’s early 20th century invention.
“Tesla’s devices are an alternative to traditional check valves, where moving parts tend to wear over time,” explains Ristolov. “And now we have found that it is very effective in mixing and can be used to pump fuel, coolant, lubricants, or other gases or liquids using the vibrations of engines and machines. . “
Reference: May 17, 2021 Nature Communications..
DOI: 10.1038 / s41467-021-23009-y
The study was supported by grants from the National Science Foundation (DMS-1646339, DMS-1847955).
Scientists Explore Tesla Roads Not Taken – And Find Potential New Utility in 100-Year-Old Invention Source link Scientists Explore Tesla Roads Not Taken – And Find Potential New Utility in 100-Year-Old Invention