Kuaishou's heartthrob host, he just wants to make a career

As the team leader, Zhou Mian clearly saw that Lin Yan did not submit the program after writing the program for the last two questions at the competition site, but only pressed the button after Song Yu finished.

"Ah?" Song Yu was completely stunned, "I thought I won God Su with my strength, but why did he let me?"

Lan Xi glared at him bitterly, "Isn't it to let you enter the national team."

Holding the trophy, Song Yu suddenly felt very complicated.

Zhou Mian comforted: "Don't feel pressure, Yan Xi has always been cold-hearted, and he did this out of kindness."

Lan Xi didn't refute this matter, at first he also thought that Lin Yan was an emotionless person, but later found out that she had wrongly blamed him.

Before accepting the award, she wondered why he suddenly turned on Song Yu, didn't he really want to win?

In the end, Lin Yan answered her with a smile, "I never said that I want to win, I just said that I have the final say on whether to win or not. And I don't like people plotting against me. Seniors have the ability to enter the national team. I won't stop others way."

At that time, Lan Xi was ashamed and blushed, but Su Shen was a good person, and when he smiled, he looked very good-looking!

Song Yu remembered what he said just now when he finished listening, and his mood became very complicated, "I will thank God Su very much."

-

After Lin Yan came out of the science and technology hall of the competition, he quickly took a taxi to the university in the town, where Professor Girod Johnny's speech was held.

Previously, Professor Jiang had entrusted Lin Yan with a ticket. It would be a pity if he missed it.

It was a little late when Lin Yan rushed out, but he still caught up with the most exciting part of the speech. Fortunately, Huo Jin had tutored him in English and taught him the pronunciation of British English. Otherwise, he would have had a hard time listening to the speech. .

The one-and-a-half-hour speech passed quietly. Before he could react, the speech was over, and his notebook was already full of information about the Reynolds number.

After the speech, Lin Yan took the invitation letter to visit Professor Girod. After knowing that he was recommended by Professor Jiang, Girod expressed a warm welcome.

"Oh... dear Yan, you are Professor Jiang's beloved student, right?" Girod spent a few years in Huaguo in his early years, and his Chinese is pretty good. That's when he met Professor Jiang.

"Yes, Professor Girod, my name is Su Yanxi."

"I know you, sit down." Professor Girod asked his assistant to go out first, and left Lin Yan alone, "I have heard about your deeds. You solved Zhou's conjecture at the age of 16 and became the youngest scientist. ,very impressive!"

Lin Yan scratched his head shyly, "That's all happened before."

"You are better than all my students." Professor Girod, like Professor Jiang, cherishes talents very much. He expressed his appreciation to Lin Yan at the first meeting, and said that if he wants to study abroad in the future, It is planned that his school welcomes him very much.

After exchanging pleasantries for a while, I finally entered the topic: "I heard from Professor Jiang that you want to make the NS equation your new topic? This is a very difficult task."

"Yes, I want to challenge it. Taking it as the research direction of the subject may be able to explore the mystery of turbulence, so that the country's aerospace and nuclear weapons research and development will no longer be restricted."

The central question of turbulence theory is to find the statistical solution of the Stokes equation. Due to the nonlinearity of this equation and the irregularity of turbulence solutions, turbulence theory has become the most difficult and fascinating comprehension in fluid mechanics.

And what he was about to challenge was this field! !

"Unbelievable!" Professor Girod said excitedly, "Yan, you are a person with the spirit of exploration."

"Yes, so I'm here this time to ask you about the deeper connection between the Reynolds number, the ns equation, and turbulence. I believe that no one is more familiar with the Reynolds number than Professor Girod."

Professor Girod pointed out that the flow shape of the fluid is not only related to the flow velocity (ω), but also related to three factors: the pipe diameter (d), the viscosity of the fluid (μ), and the density of the fluid (ρ).

Reynolds number Re=ρvL/μ, ρ, μ are the fluid density and dynamic viscosity coefficient, v, L are the characteristic velocity and characteristic length of the flow field...

Turbulent flow is a highly complex three-dimensional unsteady, irregular flow with rotation. In fluid mechanics, the Reynolds number is a measure of the ratio of fluid inertial force to viscous force. It is a dimensionless number.

Some people say why the relationship between turbulence intensity and Reynolds number is inversely proportional. The definition of turbulence intensity is the ratio of the root mean square of the velocity fluctuation to the average velocity, while the Reynolds number and the average velocity are directly proportional.

As for the relationship between the final turbulence intensity and the Reynolds number, the key depends on the relationship between the "root mean square of velocity fluctuation" and the Reynolds number. Maybe the Reynolds number increases, but the root mean square of velocity fluctuation does not increase proportionally. In this case, Turbulence intensity and Reynolds number will have an inverse relationship...

-

It was already dark when Lin Yan came out from Professor Girod, but he felt full of vitality.

If he was still hesitant to take the existence of smooth solutions of NS equations as a subject, where should he start, but after talking with Professor Girod, he seemed to have some signs.

Can't wait to start a new project, back to the hotel, Lin Yan booked a plane ticket to return home overnight, and when Zhou Mian found out, he was already on the plane.

After getting off the plane, he originally wanted to go back to the old house, because half of his materials were put in the study room, but he suddenly remembered Huo Jin, and thought it was fine, in fact, those materials are not absolutely necessary!

He went straight to the apartment arranged for him by the school, formally typed a new topic on the NS equation on the computer, and then sent it to Professor Jiang.

At the same time, the system triggers the ultimate task [decipher the existence of smooth solutions of the Navier-Stokes equations (NS equations) in three-dimensional space, and find the mystery of turbulence. 】

After sending it to Professor Jiang, he locked himself in the apartment to find out all the known data about Reynolds number, turbulence and ns equation. There must be something deeper hidden and unknown.Undiscovered patterns—