Before returning to the college entrance examination, I became popular in the science circle

Lu Xiao explained his thoughts carefully. The phenomenon of turbulence is not exclusive to ordinary fluids. Plasma can also produce turbulence. And because of the existence of an external magnetic field, the turbulence of plasma will be more complex and difficult to predict than the turbulence of general fluids.

"Of course, no problem, Brother Lu, what kind of cooperation do you need from me?" Wu Tong accepted Lu Xiao's invitation without any hesitation. From a mathematical point of view, Wu Tong was quite good at the turbulence section. After all, in NS -In terms of equations, Wu Tong's accumulation is a well-deserved aspiration to the top of the world.

In the fusion reaction, the temperature of the plasma will exceed hundreds of millions of degrees after reaching its peak, which is almost equivalent to the interior of a star. No material known to date can block this scorching energy. However, everything has relativity. The greatness of human beings lies in the good use of tools, whether they are tools in the sense of utensils or tools in the sense of knowledge.

Plasma confinement is the basis for human intervention and control of this fusion reaction, and it is also the meaning of the entire controllable nuclear fusion.

The concept of the stellarator device is to use twisted magnetic fields and strong magnetic fields to constrain fusion reactions, confine them in a limited space, and keep them away from the inner wall of the orbit, thereby reducing the burning attack of high temperatures on the orbital wall.

However, despite this, there are still not many currently known materials that can persist for too long in temperatures that are already considered radiation. Another reason that causes the most headaches and troubles in the world is neutron radiation.

However, this is about to become a thing of the past for Wu Tong. They already have high-temperature-resistant materials that break through the current limitations, as well as HC-1 new heat-resistant materials that resist neutron radiation and transmutation, as well as radiation-resistant materials. design plan.

The tokamak device is stuck in a bottleneck in terms of discharge time.

The current longest discharge record is held by the "EAST" Oriental Ring in South China, which lasted 102 seconds. This almost marks the ceiling of the "discharge time" of the tokamak device's technical route. If you want to raise this ceiling by an inch, All must pay a high price.

Now, based on this good foundation, what they need is a powerful plasma confinement twisted magnetic field design to better control the stable and long-term operation of the fusion reaction.

They have made simultaneous breakthroughs in superconducting materials produced by magnetic fields. In this regard, Wu Tong has synchronized the data with Lu Xiao. The improved material data is also the basis for their consideration. Although breakthroughs in superconducting materials still fail to achieve room temperature superconducting, breakthroughs in new high-temperature superconducting materials have reduced many technical barriers.

A large magnetic field means a large current, and current releases heat when it passes through a conductor. The wires must be soaked in liquid helium to reach the superconducting temperature on the one hand, and on the other hand to prevent the heating effect of the current from causing the wires to heat up. After the breakthrough of superconducting materials, they no longer need to worry about this problem.

, they have the material basis for a larger magnetic field, and carbon nanographene wires are their confidence. In the field of superconducting materials, Wu Tong has set a new precedent. Their magnetic field constraint force can simultaneously increase the constraint force several times while reducing the unit area of ​​the project. However, just having a magnetic field is not enough. To be controllable, they must have enough ways to control the magnetic field...

Fortunately, the design concept of the stellarator device means that as long as they solve the control problem, they do not need to use an ohmic transformer to start the plasma current like the Tokmak device, nor do they need to consider twisted membranes and magnetic surfaces. Problems such as tearing and resistive wall films are equivalent to transferring technical difficulties to engineering difficulties.

"The movement rules of plasma in the stellarator involve the study of quite complex plasma turbulence phenomena. It can be said that this is the most difficult and complex one among the many research directions on the Navier-Stokes equation. , thank Mr. Wu, your contribution to the NS-equation and the general solution have given me enough basis to carry out bold breakthrough research on this law!"

Lu Xiao smiled and spread his hands. Before the NS-equation was verified by Mr. Wu, this problem would have become a hot topic. They could only rely on repeated failures and experiments to cross the river. Look for patterns. However, now, they have enough theoretical tools. Although it is difficult for ordinary people to use them, they are not ordinary people either.

NS-Equation, after Wu Tong’s proof shocked the world, Lu Xiao did in-depth research on this section, combined with his expertise in turbulence. Especially after Wu Tong’s support granted him the authority to solve the problem, Lu Xiao made rapid progress. .

His continuous accumulation and improvement in turbulence not only gave him a deeper understanding of fighter aircraft, but also allowed him to have enough reserves when Wu Tong invited him to study the laws of plasma motion in the stellarator device. You can start directly, splash ink, and have design and planning ideas in a short time.

"With the help of NS-equation formulas and general solutions, I set here, assuming that atoms enter the plasma, we set the data..., with this as the target, I need you here... Help me build a complete mathematical model to define and eliminate interference!" The biggest difficulty in my life, the most uncontrollable problem, is now as soft as a finger, and will surrender to Wu Tong and Lu Xiao's design!
  Of course, the two of them will not be arrogant and blind because of this. The attitude towards doing scientific research is to be cautious from beginning to end. Plasma is never something that can be ignored. High temperature and high density... have always been its focus.

"According to the formula of Reynolds number Re=ρvd/μ, the high-density plasma bound by the electromagnetic field has a large Reynolds number. Any small disturbance will cause the entire system composed of plasma to produce chaotic and irregular turbulence... ··Assume this Reynolds number..." After quickly looking at Lu Xiao's preliminary design, Wu Tong thought carefully for a while, took out the scratch paper and pen, and began to deduce, change and deduce, Bian and Lu Xiao continued Arguing.

"Set a value that satisfies certain conditions...given..."

Soon, all kinds of arcane mathematical formulas were filled with sheets of draft paper. Lu Xiao tried his best to keep up with Wu Tong's thinking and calculation speed, providing physical angles and analysis of plasma turbulence, and gradually improving it, Wu Tong's writings , a mathematical model that gradually takes shape. This is his tool and reliance for the next step.

The movement rules of plasma in the stellarator were gradually improved and clarified through the collision of ideas between the two.