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Chapter 314 Turbulence is a very interesting phenomenon!

Huaxia, Huaqing University, Qiuzhai.

Mr. Yuan, who is the same age as the Republic, is already 86 years old and has been retired for more than five years. Fortunately, he is still in good health, but he comes to Huaqing less often.

There is nothing else to do every time I come here, mainly to meet Qiao Yu in Qiu Zhai, and today is no exception.

The old man was stubborn and always felt that letting Qiao Yu meet him at home was disrespectful to his beloved grandson.

Before he retired, Qiao Xi finally graduated with a master's degree from Huaqing University. The title of his graduation thesis was "Research on the Existence of Solutions of Nonlinear Partial Differential Equations Based on Qiao Algebra Methods"

In the current academic community, Cho algebra specifically refers to the algebraic system of generalized modal axioms.

It is worth mentioning that this paper was also named the best paper at an international mathematics conference supported by the International Mathematical Union, but Qiao Xi did not go to receive the award.

Qiao Yu also wanted Qiao Xi to produce more results and compete for a Fields Medal. However, Qiao Xi himself had no interest in this. After graduation, he even rejected the olive branch thrown by Huaqing University and did not take the title of associate professor. He became an assistant researcher at the Institute of Mathematics.

In Qiao Xi's own words, her abilities only make her suitable for being an assistant, let alone an associate professor, as she is afraid of misleading students.

But to be honest, in Yuan Zhengxin's opinion, his last female disciple is more than qualified to teach undergraduates.

Qiao Xi is actually very sensitive to mathematics and has a flexible mind, which makes him particularly suitable for teaching. Moreover, as he is older, he is not suitable for research. But Qiao Xi does not want to be an associate professor, and no one forces him.

In Qiao Xi's own words, it was enough for the Qiao family to have Qiao Yu contribute to the mathematics community. She was more suitable to help others and give advice to those who really studied mathematics.

Perhaps as a mother she didn't want to take too much credit from her son, which was something that Mr. Yuan admired very much.

Qiao Yu is a lawless kid who doesn't care about his reputation before and after his death. But the old man still cares about it. So it's good that Qiao Xi has this idea.

Of course, the reason for meeting Qiao Yu today was not because of these messy things. It was simply because the old man felt that Qiao Yu should not waste his youth like this.

This world is unfair to anyone.

For some people, all we ask of them is to stay out of trouble and just lie down and do nothing.

But even if some people do a lot of things, some people still think that they are wasting their time and should do more things.

There is no doubt that Qiao Yu belongs to the latter.

Even though he is now the commander-in-chief of China's manned lunar landing project and is the focus of everyone's attention, in the eyes of Old Yuan, this kid has not done anything serious in these years.

He must be taught a lesson. He is a good mathematician, but he doesn't do his job properly every day and puts his energy into engineering. Who wouldn't be troubled by this?
Qiao Yu was extremely cunning. He had just finished a remote video interview and knew that Mr. Yuan was waiting for him in Qiu Zhai, so he asked Xia Keke to bring their child over to meet him and go to Qiu Zhai together.

Yes, not long after getting married, Xia Keke became pregnant with a boy and named him Qiao Zisheng.

It didn't sound so nice, but Mr. Yuan insisted on giving the name himself, and with the support of Qiao Xi, Qiao Yu and Xia Keke had no choice but to accept it.

Qiao Yu knew, of course, that this name was not given to the child at all, but was a reminder to him, so he had made plans. When the child was a little older, he would just send him to Old Yuan and let the old man take care of him...

Anyway, the child was born without a grandfather, so Yuan Lao and Tian Yan were the ready-made grandfathers. As for the slightly messy generation order, Qiao Yu didn't care.

Just let each of them discuss their own opinions.

The old man likes to talk a lot, but with a two-year-old kid acting as a buffer, he can attract some of Mr. Yuan's attention.

This is true.

When he arrived at Qiu Zhai, he pushed the door open without even saying hello. Old Yuan was about to lose his temper, but when he saw the child in Xia Keke's arms, his stern face instantly turned into a kindest smile.

"It's time for self-reflection. Come on, let grandpa see if you're well fed and if you've gained weight."

Qiao Yu couldn't help but roll his eyes.

The older generation always thinks that a child is healthy only if he is fat, which is totally disrespectful to science. The serious thing is that the child should not be overweight.

However, thinking that he was here to be scolded today, Qiao Yu still held back his complaints.

The next step was to follow the script. Xia Keke held the child to cheer the old man up, while Qiao Yu poured himself a glass of water and took a book from the old man's bookcase and started flipping through it.

Grandpa Yuan hasn't seen his adopted grandson for more than half a month. Based on past experience, he would wait at least a quarter of an hour before coming to talk business with him.

If I'm in a good mood, I won't be as aggressive when I scold him later. Most importantly, the old man is forgetful. He might forget what he was looking for after playing with the kids for a while. In that case, today will just be a mess.

To be honest, Qiao Yu really has no motivation to continue pursuing scientific research now.

His dreams had basically all come true. The residential area of ​​Xingcheng had also been renovated, and as he wished, a sculpture of his grandfather Qiao Guozheng had been erected at the entrance of the residential area.

A sign was erected to give a detailed account of Old Joe's life. The content was written by a famous person in Xingcheng and was also included in the local annals.

He has so much money that he doesn't know how to spend it. His Xiyu Technology Company is now making a lot of money just from patent licensing.

Although he is only 26 years old this year, he is already a man of his word in his field, and almost no one will question him. Those who question him are mostly silent.

Even if I said something, no one would pay attention.

It's not that Qiao Yu is petty and deliberately retaliates. The main reason is that he has reached his current position and he has never paid attention to these trivial matters. Someone took the initiative to handle the matter.

The reality is that Qiao Yu really doesn't care if someone is teasing him on the Internet.

People may question other 26-year-old doctoral supervisors. After all, most people engaged in scientific research are still in the stage of competing wits and courage with their supervisors at the age of 26.

But no one would question that Qiao Yu got the position of doctoral supervisor at the age of 24.

Fields Medal winner, Nobel Prize winner, but he didn't go to receive the award. Others include Clay Medal winner, Ramanujan Medal winner, Gauss Medal winner.

The American Mathematical Society also awarded Qiao Yu a Mathematical Research Contribution Award, and he won countless other small awards.

He still hadn’t received several lifetime awards in the scientific community, mainly because he was too young. Even China had delayed awarding him the highest science and technology award, and everyone was worried about the same thing—there would be no awards to give him if he made achievements in the future.

Even the International Mathematical Union is considering organizing a Qiao Yu Award in the future to be awarded to potential new mathematical talents.

Of course this would require some financial support, but Qiao Yu was too lazy to consider these for the time being. He had no interest in fame now and was only pursuing happiness.

After all, if you don't enjoy life quickly when you are in your twenties, you will only be able to cultivate yourself and not enjoy life when you are old.

Unfortunately, Mr. Yuan's memory was obviously good today. After a little self-reflection, he motioned to Xia Keke to take the child aside first, and then his eyes naturally fell on Qiao Yu who was reading a book next to him.

"Hmm..." The old man cleared his throat.

Qiao Yu was already reading the book with mixed feelings, so he immediately put it down and looked at Mr. Yuan.

"Grandpa, do you have any advice?"

"I dare not teach you! Qiao Yu, now I think about it, you were really well-behaved when you were a child. At that time, you didn't need anyone to tell you, and you studied hard every day.

No matter what he does outside, he will remember to report to me the next day. If he has any ideas, he will discuss them with me as soon as possible.

I just realized now that you weren't really eager to learn at that time, you just didn't have strong wings yet, right?"

Even though Qiao Yu was thick-skinned enough, he couldn't handle it and immediately complained, "No, Grandfather Master, you misunderstood me! I never thought of it that way!"

"Oh? Then let me ask you, how long has it been since you did any research in mathematics? How many propositions have you considered in recent years? What results have you achieved?
I won't talk about research orientation. Just tell me, how many students have you recruited after you became a doctoral supervisor? How much effort have you put into training students?
Yan Zhen was so angry at you that he came to me to complain! You still have the nerve to say that we misunderstood you? I ask you, where is your original intention? Is your pursuit of mathematics over? ! "

Well, Qiao Yu was sure that the old man was very angry.

He was so angry that even Xiao Zisheng didn't give him face. Qiao Yu was not afraid, of course, he was mainly afraid that the old man would get sick from anger...

So Qiao Yu immediately complained loudly, "Who said that? Grandpa, Director Tian has no idea what I've been doing recently! He said I was the commander-in-chief of the moon landing, but I've been thinking about math problems all the time! To be honest, I've been studying turbulence recently."

"Oh?" Yuan Zhengxin glanced at Qiao Yu, half believing and half doubting.

Qiao Yu had a very convincing argument.

He must not show weakness at this time. Everyone thinks that he had noble help when he was young and then he would rise rapidly.

But these people definitely don’t know that noble people are not easy to fool.

Whether it is Mr. Yuan or Director Tian, ​​they both have the ability to see through the essence at a glance. His little tricks were seen through at the first sight. It can only be said that no one can succeed easily, and everyone has a hard time.

"Of course it's true! You know, I'm interested in aerospace now! The Navier-Stokes equations are the core equations of fluid dynamics!
Why can't we prove the existence and smoothness of Navier-Stokes equations now? Isn't it because we don't understand the nature of turbulence?
Abstract mathematical problems, once solved, often have unexpected applications! I have always believed in this. I believe that if this problem is proven, it will definitely revolutionize the entire aerospace engineering in the future!

So I've actually been thinking about this problem recently! But as you know, turbulence is hard! Especially in three-dimensional space, vorticity stretching allows the vortex strength to increase infinitely as the fluid moves.

This may cause energy to accumulate at a small scale, causing singularities. In addition, the three-dimensional nonlinear term may cause the derivative of the solution to tend to infinity in a finite time, resulting in singularities and destroying smoothness!
You also know my personality. I have never been the type to show off if I haven't made any achievements! So Director Tian and you think that I have been slacking off recently, it's really a misunderstanding!"

Qiao Yu said righteously.

"laugh……"

Really, if Xia Keke next to him hadn't couldn't help laughing out loud, Qiao Yu felt that his performance would have been pretty perfect.

When Qiao Yu and the old man looked at her, Xia Keke embarrassedly lifted up Qiao Zisheng, who was blowing bubbles in her arms, to ease the embarrassment a little.

Fortunately, the old man's mood has obviously improved.

He smiled and looked at Qiao Yu and said, "Oh? So you haven't slacked off? Did Yan Zhen misunderstand you?"

Qiao Yu nodded righteously and replied, "Yes, Grandfather Master! Just like you said, I have never forgotten my original intention!"

Yuan Zhengxin smiled even more happily: "That's great! This is a good question! The Millennium Problem has been there for so many years, and now except for the Poincare conjecture and the Riemann conjecture, the other five problems have not been solved.

I think it's great that you focus on turbulence! It's a really good question and very relevant. As you said, the reason we can't solve this problem is that we don't understand the nature of turbulence.

In fact, we not only do not understand the nature of turbulence, we do not even understand the nature of nonlinear equations! The existence and smoothness of solutions, the scarcity of analytical solutions, and the lack of theoretical tools all restrict our research on such problems.

So it's great that you can focus on the turbulence problem! I'm very pleased! Now that the manned lunar landing program has almost succeeded, there are not many things in engineering that you can intervene in. In your spare time, you can do more research.

So, it's the same as before. You send me and Yanzhen a copy of your weekly research content. Or your thoughts after thinking about it are also OK. It just so happens that I'm retired and have nothing to do every day. "

The old man changed his stern attitude and spoke in a very kind voice.

He didn't even glance at the book written by PA Davidson that Qiao Yu had just flipped through - "Navier-Stokes Equations and Turbulence".

They were all smart people, and the old man was too lazy to expose Qiao Yu's nonsense. Instead, he was very satisfied that this kid could trick himself into it, which saved him a lot of trouble.

There is no way, the child is grown up and disobedient! You can't really beat him, right?

"Uh..." Qiao Yu was thinking seriously about how to push this matter away, but the old man didn't give him the chance at all.

"Okay, there's nothing else to do. If you're busy, go do your thing first! Coco, stay here with me with Self-Reflection. If you like the book, take it. It's for you."

Yuan Lao said generously.

Qiao Yu thought about it, then obediently tucked the book under his arm and took it away.

When an old man wants to cheat you, it’s useless to resist, so you might as well enjoy it.

Then again, mathematics is a wonderful subject, and it is really interesting to study it...

Well, now that things have come to this, this is the only way he can comfort himself.

The only thing that annoyed him was that the question he chose seemed a bit difficult!
(End of this chapter)