Tesla Valve | The complete physics

Some commonly used one-way

valve

s are shown here. All of these

valve

s have one thing in common. They all have moving parts. Here's a design challenge. Is it possible to design a one-way valve without moving parts? Most of us will feel that way. It's an impossible design challenge, but not for design genius Nikola Tesla Nikola Tesla has developed a one-way valve with no moving parts in his patent. He called this valve the valvular canal. In this video, we will not only learn the operation of this valve. We will try to understand how Tesla's mind works during the development of this brilliant product.

Let's consider this design as a simple channel with some corrugations on the walls, as shown, these types of corrugations provide the same amount of resistance to flow when fluid enters from either side. now take the second case here the obstacles are added at an angle here is a question for you in which direction will it be easier for the fluid to flow from left to right or from right to left your intuition says that the flow from right to left is easier No. Why is it like this? The flow is of the convergent type when it goes from right to left, but the divergent effect will occur when the direction of the flow is reversed.

The

physics

of convergent and divergent flow is quite different in convergent flows such as area. reduces the velocity it will increase along the flow this increase in velocity means that the pressure will fall along the flow for divergent flow the case will be exactly the opposite the pressure will increase along the flow this increase in pressure is called gradient condition adverse pressure as the pressure increases along the flow, the fluid particle decelerates along and after a particular length, a flow reversal could occur. This reversal will lead to flow vortices and energy losses in a short divergent flow.

It's a difficult flow to maintain. It offers much more resistance than a converging flow. rearrange the obstacles here, some obstacles are connected to the wall and the remaining ones become smaller. Let's examine what happens to the flow when it moves from left to right. You guessed it. Here the flow splits into two parts along with the divergence of the flow afterwards. This causes the secondary currents to mix with the primary current at almost a 180 degree angle. This process is similar to mixing two jets from opposite directions, resulting in flow turns and losses. This design will obviously produce more restrictions than the previous design and This process will be repeated on each pair of obstacles when the flow goes from right to left, it passes very easily without much obstruction.

Let's make some more geometric modifications to this design. The above design is a mirror reflection. Let's move the bottom as shown now. the width of the obstruction increases what you have now is the nikola

tesla

design in the

tesla

valve the flow is always divided into two streams the straight line flow is the primary stream and the deviated flow is the secondary stream in its nikola tesla design We intelligently integrate all the interesting fluid mechanics we have learned so far in an optimal way. Now let's look at the detailed fluid mechanics of the Tesla valve. Let us first consider the flow from right to left.

Initially the flow is divided into two streams, obviously the secondary flow will be very low as the fluid has to make an unnecessary turn to enter that region, this means that most of the flow will be due to the primary stream and will go almost in a straight line without much obstruction when the fluid enters from the left, the flow again becomes divided into two streams in the lower section, the flow diverges and the adverse pressure gradient will make your life difficult. The second stream hits the cube-shaped structure and loses its momentum. After this loss of momentum the flow takes an approximate 180 degree turn which again causes flow losses after all these obstacles this stream mixes with the first stream from an opposite direction resulting in further loss of energy, in short, when the flow goes from left to right, it suffers a lot of obstruction, this process of sudden expansion, deviation, reversal and mixing will take place in each unit by adding many of these units, the resistance can be increased even further.

Let's test the Tesla valve by connecting it to the outlet of a running pump. If the valve is connected this way, you will notice a good amount of flow through it, obviously. The pressure drop across the valve will be negligible. Simply connect the valve in the reverse direction and the flow becomes drastically low. The pressure drop across the valve will be enormous. The Tesla valve cannot block flow

complete

ly, but this one-piece valve is very durable as it provides more resistance to flow in one direction with no moving parts. It has found research applications in microfluidics and pulse jet engines.

Used in conjunction with a micropump to deliver fluid in very small quantities, as small as 3 milliliters per minute, valveless pulse jet model. The motors use the Tesla valve to replace the reed valve in conventional pulse jet motors. We hope it is strange to understand how Nikola Tesla's mind worked in the development of this product. He be an engineering member by clicking the support button. Tune in soon for another video.