As you can see from this Flow Trajectories plot, it takes less pressure to move the water in the high flow direction than in the low flow direction. When the water runs from right to left on the screen, it is called the high flow direction because the water or gas flowing in this direction has a very easy pathway and it does not take very much energy or pressure to move the flow in the high flow direction. Time it takes from water to go from one end of the Tesla Valve to the other end in the low flow direction. In the low flow direction, it takes the water 1.922 seconds to push all the way through this Tesla valve. The Water is flowing in the low flow direction. Pressure and Mass Fraction of water graphics showing water pushing into the Tesla valve displacing air as it moves through the Tesla valve. This is what is known as the low flow direction of the Tesla valve. This increases the energy necessary to push the water from left to right. The flow naturally wants to move into the side channels, which then loop around and push back into the main channel causing vortices in the main channel. SOLIDWORKS Flow Simulation is the perfect software to demonstrate how a Tesla Valve works because it can easily calculate the laminar and turbulent flows and show the results of the flow field through the entire device without anything obstructing the flow through the device.Īs you can see from this pressure Flow Trajectories plot I created in SOLIDWORKS Flow Simulation, the flow ran from the left side of the Tesla valve to the right side. Telsa Valve in SOLIDWORKS Flow Simulation The Tesla valve is beneficial for applications that require the least amount of moving parts possible, like rocketry. While the Tesla valve is not truly a one-way valve in the sense that it does not absolutely stop flow in one direction, it does increase the amount of energy necessary to push flow in the low flow direction so that the flow in that direction is slowed to a trickle. This means it takes a very high pressure to push a liquid or gas in one direction, but a very low pressure to push the liquid or gas in the other direction. In the opposite direction, the liquid or gas can run through the main channel with very little opposition. When a liquid or gas is moving in the low flow direction, it creates backflows that increase the amount of energy and pressure necessary to force the liquid or gas in that direction. One of his little-known inventions is the Tesla valve, a one-way valve without any moving parts.
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