Rainbow University.

Faculty of Physics.

Inside the academic lecture hall.

Su Zirui, a sophomore, stepped onto the high platform.

He put the U in his hand into the USB port.

On the multimedia screen of the site, the title of the paper appeared - "Detailed calculation of turbulent structure!"

See the title of the paper.

In the academic lecture hall, there was a sensation.

In real life, turbulence can be seen everywhere.

Turbulence in the atmosphere, rapids in rivers, smoke billowing over thermal power plants, blood flowing in human arteries, etc., are all turbulent phenomena.

In the parlance of physics.

Fluid media, such as water, atmosphere, and plasma, have two states of motion: laminar and turbulent.

Laminar flow refers to the irregular movement of the molecules of the medium, but the fluid mass is moving regularly, and a clear streamline image can be seen.

Turbulence refers to the irregular movement of the molecules and fluid masses of the medium, and their traces will be entangled into a mess.

In the field of physics.

Scientists have been studying turbulence for more than 200 years.

To this day, turbulence is still a problem that has not yet been overcome in classical physical fluid mechanics.

Countless young talents plunged into the deep pit of turbulence and never climbed out again.

And at this moment......

Su Zirui's paper turned out to be the calculation of turbulent structure!

That's an exaggeration, isn't it?

Could it be that Su Zirui has really made a major breakthrough in the field of turbulence?

At that time, Herreth Rambo, a fluid mechanics scientist in the Eagle Nation, once said: "I am very old, and when I go to heaven to meet God, I will ask him two questions, one about quantum mechanics and one about turbulence." I guess there is an answer to the first question. "

Thus.

If you want to figure out the structure of turbulence and the physical mechanism of its generation, I am afraid that even God does not know.

Since the dawn of science, there have never been physicists who can really study turbulence.

Can Su Zirui really do it?

......

On a high platform.

While controlling the PPT, Su Zirui slowly spoke: "Turbulence is an irregular and chaotic but organized fluid movement that changes with time and space.

23 Tumbling clouds, howling hurricanes, rushing rivers, rushing water from faucets, vortices from airplanes taking off and landing, the entire atmosphere of the earth, the gas vortices on the surface of Jupiter, and so on, are all turbulence.

Turbulence can enhance fuel mixing, improve fuel efficiency, and have important implications for atmospheric circulation, ocean climate, weather forecasting, and more.

Therefore, the study of turbulence has very deep theoretical significance and application value.

In today's paper, I will talk about turbulence in detail from the perspectives of the physical mechanism of turbulence, the turbulence from smooth to turbulent, when the motion of which molecule disturbs the entire motion order, what determines that a molecule suddenly becomes unstable at a certain moment, the structural calculation of turbulence, and the Navier-Stokes equation that describes fluid motion......"

Hear this.

All the students and professors present were seated.

They listened attentively to Su Zirui's presentation.

If the structure of the turbulent flow can really be calculated.

The entire physical world will usher in earth-shaking changes.

......

Su Zirui talked eloquently on the stage: "The energy gradient theory in the physics world is used to study flow stability and turbulent transition.

The results show that in the transition flow, the mechanical energy gradient along the normal direction of the streamline in the flow field plays a non-stable role in the flow, and the mechanical energy gradient along the streamline direction plays a stabilizing role in the flow, and the stability of the flow depends on the ratio of these two quantities, which is a dimensionless variable and is defined as an energy gradient function, and its physical meaning is a local Reynolds number.

The occurrence of turbulent transitions depends on the magnitude of the energy gradient function in the flow field and the dimensionless amplitude of the disturbance.

Under the action of unsteady perturbation, when the vector direction of the total mechanical energy gradient at a certain location in the flow field is perpendicular to the velocity vector, the value of the local energy gradient function becomes infinity, which becomes the singularity of the Naver-Stokes equation.

At this singularity position, the velocity in the direction of flow suddenly changes to zero, the velocity occurs at the tip, and the pressure produces a peak.

In fact, this is where turbulence begins.

Everyone, please look at the big screen.

This theoretical prediction of the change in the flow field is consistent with the experiment, which is the sudden occurrence field generated by the turbulence found in the experiment.

The Poisson equation analysis method is used to prove that the point where the mechanical energy gradient and the velocity vector are perpendicular to each other is the singularity in the flow field.

It has been mathematically proven that the necessary and sufficient condition for turbulence is the occurrence of a singularity of the Navier-Stokes equation in the flow field.

Turbulence is caused by a singularity caused by a velocity discontinuity in the flow field, resulting in a nonlinear instability.

The occurrence of turbulence depends entirely on the magnitude and direction of the mechanical energy gradient in the flow field.

The change of the Reynolds number in the Newtonian flow and the change of the Deborah number De in the non-Newtonian flow only affect the change of the mechanical energy gradient.

The results of the theoretical analysis are in agreement with the results of a large number of experiments and direct numerical simulations of the Navier-Stokes equations. "

Speaking of which.

Su continued: "My definition of turbulence is that turbulence is one of the most stable dynamic states of a fluid governed by a mechanical energy gradient.

The turbulent state is maintained by the continuous nonlinear instability of a large number of singularities in the flow field.

If under the influence of certain conditions.

For example, if the Reynolds number is lowered, the nonlinear instability caused by the singularity of the Navier-Stokes equation in the flow field gradually disappears, and the turbulent flow becomes laminar......"

......

Inside the academic lecture hall.

Everyone listened in fascination.

Su Zirui's explanation method is simple to understand, and explains the mystery of turbulence in detail.

His theory, which subverts the original turbulence theory, is a new turbulence theory system, and is the original innovative work of "from 0 to 1".

......

Next.

Su Zirui continued to explain turbulence.

He calculates from how turbulence goes from smooth to turbulent, the movement of molecules in turbulence at such and such a moment, the sudden instability of such and such molecules in turbulence at some moment, the irregular trajectory of turbulence, the internal results of turbulence, turbulence structure, ......

All the secrets related to turbulence.

At this moment, it is all displayed in detail in front of everyone.

With Su Zirui's narration.

The formulas displayed on the large screen are as many as hundreds of pages, containing thousands of formulas, and involve reference to nearly 100 previous literatures.

The physics teachers present listened carefully and verified frantically in their notebooks.

However, it takes a lot of time to argue this paper.

They could only give up the argument for the time being, and chose to match Su Zirui's speed of explanation.

There are many places in the middle of the paper that they don't understand.

But on the whole.

There are no logical errors in the paper.

......

Time passes slowly.

On the big screen, a lemma emerges.

Su Zirui said loudly: "From the above differential equations and various formulas, the internal structure of turbulence can be thoroughly calculated!"

The voice fell.

The scene was silent at first.

Then a tsunami of cheers erupted.

All the teachers and students in the lecture hall stood up and applauded for a long time.

The turbulence problem is solved.

Su Zirui became a god in a battle, which is destined to shock the entire physics world!

......

Inside the academic lecture hall.

All the students of the Russell Group have a frenzy in their eyes.

Two hundred years.

Turbulence is always the "cancer" of physics.

It has suffered from many outstanding physicists, including Nobel laureates.

The physics community has always believed that turbulence has not been solved in the past, and now there is no hope of solving turbulence, and it is estimated that turbulence will never be solved.

I didn't think about it......

Su Zirui, a sophomore at Xia Guo Rainbow University, completely solved the turbulence problem!

How incredible is that?

The turbulence problem is solved, and to put it mildly, it can better serve the industry.

For example, in the nuclear engineering industry, the safety margin of thermal and hydraulic design should be reduced, the economy and safety of core design should be improved, and nuclear energy resources should be better utilized.

For example, in the field of ship design, better shape design can be obtained, so that the ship can sail faster, have a longer life, and so on. (If you read a violent novel, go to Feilu Novel Network!)

Aviation, aerospace, shipbuilding, power, water conservancy, chemical industry, ocean engineering, meteorology, marine science, astronomy and other fields will usher in a new leap forward and enter a new round of industrial revolution.

The turbulence problem is solved, and at best, physics can be unified.

From how dark matter and dark energy work, to the macroscopic operation of the universe, to the quantum microscopic entanglement process, all the details can be simulated without leakage.

Not an exaggeration.

Su Zirui can easily win the Nobel Prize in Physics by solving the turbulence problem!

......

The other side.

Faculty of Chemistry.

Inside the academic lecture hall.

Zhou Yu, a sophomore student, put the USB flash drive into the USB port and read the paper.

The title of the paper is "Joule Thermal Flash Technology!Let Graphene Become the Price of Cabbage in Seconds!"

Seeing this title, the scene was in an uproar.

The students and professors of the Russell Group were all surprised.

Graphene currently has a commercial value of between US$70,000 and US$200,000 per tonne.

What the hell is it that makes expensive graphene the price of cabbage?

If graphene really becomes the price of cabbage, doesn't it mean that a new round of material revolution is coming?

While operating the APP, Zhou Yu introduced: "Joule hot flash evaporation technology is a new carbide synthesis method.

Specifically, a millisecond current pulse is passed through the precursor, and the sample reaches an ultra-high temperature of more than 3000 K, and then quickly cools to room temperature.

Based on this, I have successfully synthesized 13 important element carbides such as TiC, ZrC, HFC, VC, NBC, TaC, Cr2C3, MoC, W2C, etc., and covalent carbides of B4C and SiC, showing good versatility.

Then, by controlling the pulse voltage, thermodynamically stable -Mo2C, metastable -MoC11-x and -MoC11-x and other phase pure molybdenum carbide were selectively synthesized. []

-Mo2C has the best HER energy with an overpotential of -220mV Tafel slope of 68mVdec?1 for excellent durability.

Whether it's petroleum coke, coal, food waste, rubber tires or plastic waste, Joule thermal flash technology can be used to turn it into coke-free phase-controlled carbide nanocrystals in less than 100 milliseconds.

Traditional production methods such as mechanical exfoliation, redox method, SiC epitaxial growth method, and chemical vapor deposition method want to produce graphene, and the cost is high.

The Joule thermal flash evaporation technology can achieve low-cost, mass production of graphene, and the electrical energy is only 2.2~8.6kJg?1.

In my laboratory, I can produce 1 kg of graphene per day, and the electricity cost is only 1.06 yuan, completely realizing the price of graphene cabbage!

Joule hot flash graphene can also capture greenhouse gases such as carbon dioxide and methane, making it more environmentally friendly.

Of course, due to the fact that the laboratory has a very limited daily output.

In the future, I will cooperate with the scientific research units of the school to increase production, accept market application tests, and finally achieve large-scale application!"

The voice fell.

Everyone at the scene stood up and applauded.

Everyone knows it in their hearts.

When graphene is cheap, it can improve the cost performance of batteries, aviation materials, mobile phones and other materials.

Zhou Yu's flash graphene technology is still far from large-scale application.

But he has the most disruptive ideas and innovations in the scientific community.

Once this technology is applied on a large scale, it can completely set off a new round of material revolution!

......

Faculty of Agriculture.

Inside the academic lecture hall.

Xie Chenxi, a third-year female student, was talking.

The title of her dissertation is "The Birth of Nano Pesticides, a New Dimension in the Field of Agriculture!"

Xie Chenxi said slowly: "Nano pesticides are an upstart in the field of plant protection, and they are also emerging chemical technologies that can change the world in the future.

Nano pesticide refers to a pesticide preparation based on 037 certain pest prevention and control scenarios, through functional materials and nanotechnology, so that the active ingredients of pesticides in the preparation and use of the dispersion system, in a nano-scale dispersed state, and can play a different performance from the original dosage form when used.

The nano pesticide I developed perfectly solves the problems of insoluble pesticides, insoluble in water, and pesticide mixing, and completely solves the environmental pollution and insect pests caused by traditional pesticides.

Nano pesticide is a suitable dosage form and supporting pesticide product for the efficient operation of plant protection unmanned aircraft.

At the spraying site of the customized nano pesticide mixing service, you can't see the bottles and cans of various pesticides that were common before, and there is no scene of laborious stirring of various pesticides.

All it takes is a drone pilot to pour the transparent nano-pesticide tailored for the field into the water and stir it slightly.

The dispensing time of 20 acres of land only takes one minute, which completely solves the problem of pest control.

After the use of nanopesticides.

The average yield per mu of crops has doubled!

From a practical point of view, nano pesticides can not only realize the upgrade of single dosage pesticides, but also realize the stable compound of multiple pesticides, and the compounded pesticide preparations are transparent and thermodynamically stable, and can be stored for more than one to two years, which provides the possibility for remote customized production of pesticides......"

With Xie Chenxi's narration.

The students and professors at the scene were fascinated by the listening.

The agricultural production and operation mode of Xia Guo has basically realized mechanization of farming, planting and harvesting, but the plant protection part of pest control has become a "stuck neck" link.

Plant protection has the highest technical content, the most labor, the greatest labor intensity, and the most difficult risk control, which is a key part of the comprehensive realization of agricultural modernization.

The overall climatic conditions in China are complex, the incidence of diseases, insects and weeds is high, and the types are diverse, and most crops generally need to be controlled many times in the growth cycle.

According to statistics, there are 739 kinds of common agricultural pests, 775 kinds of diseases and 109 kinds of weeds in Xia Kingdom, which is difficult to control and has high technical requirements.

Now nano pesticides have been born, which can evenly spray mist insecticides, nutrients and other drugs on crops.

It will undoubtedly cause change in the field of agriculture!

......

At the same time.

Academic exchange seminars are being held in all faculties of Rainbow University.

The students of the Russell Group were all crushed by the Rainbow Students.

At this moment, they all fell into a deep shock and a deep autism.

Proving the Riemann conjecture, calculating the turbulent structure, turning graphene into cabbage price, and the birth of nanopesticides......

Every achievement of Rainbow Students makes them feel hopeless!

That's right, it's despair!

Academic exchanges in various disciplines.

They don't have any discipline specializations that they have an advantage in.

Every academic exchange was crushed and beaten by rainbow students.

The students of the Russell University Group who came to Xia Guo for academic exchanges are all proud sons of the world's top universities.

They came to the Xia Kingdom with great dignity.

I wanted to make a name for myself in the academic field, but I was hit in the face!

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