God of black technology

At this time, the phone rang.Feeling a little confused, Wang Yun took out his phone and glanced at it. It was an unfamiliar phone number.He took it to his ear and asked, "Hello, are you—"

"It's me." The voice on the phone made Wang Yun a little strange, blinked his eyes, and said silently, "Then you are?"

"We just met." The person on the other end of the phone said dumbfoundingly, "It's from the turbulence laboratory."

"Oh." Wang Yun suddenly came back to his senses, "It's you, what's the matter?"

"It's like this, can you come to the laboratory tomorrow." When the researcher said here, he seemed to be busy with something on the other end of the phone. After a while, he continued, "Maybe we need to study turbines tomorrow." Fan engine."

"Are you planning to do it yourself?" Wang Yun thought for a while, "If so, I want to spend a few days. After clarifying the parameters, I'm calculating the range."

"Oh?" The researcher was stunned on the other end of the phone, "Do you still have this skill?"

"No." Wang Yun said with a smile, "I just thought, after we have to understand the parameters, it will be easier to start. And, you know, after all the parameters are given out abroad, we It may not be possible to create it." When he said this, Wang Yun was silent for a while.

"That's right." The researcher took a breath, "It's definitely possible to make it, but I don't know if it's so advanced. Anyway, let's get lucky."

Wang Yun was stunned for a moment, wait, how could he forget such an important thing, doesn't he have a cutting-edge paper on flow field in his mind?He has probably forgotten about the experiments he has been doing for the past few months.It would be useful if the results were published.Even the development of the turbofan engine was somewhat helpful.

However, this requires the establishment of an average NS equation to solve, which is not difficult for Wang Yun.

Raising an eyebrow, it was decided.

"Who called you?" Wang Qiuyang looked at Wang Yun curiously, and said as he walked, "I called you at this time, are you dating without telling me?"

"Are you kidding?" Wang Yun sneered, turned around and said to Wang Qiuyang, "I'll go to the library first, you... go back to the dormitory first."

"No, the door of the dormitory will be closed soon, and you still go to the library?"

"En." Wang Yun nodded, "It's a little urgent."

Having said this, Wang Yun was already running towards the library, and he didn't hear what Wang Qiuyang said very clearly.Come to think of it, it shouldn't be too pleasant to say.

After arriving at the library, Wang Yun put down the materials and documents in his hand, took out the draft paper, and Wang Yun wrote the formula for solving the average NS equation.

Wang Yun is already familiar with solving equations.If the parameters of the turbofan engine are correct, it should also be reflected in the equations.Sure enough, if you really can't figure it out, then just calculate it.If it doesn't work once, then keep doing it again.

Constantly writing the equations, Wang Yun took the information in one hand and began to compare it.That's right, there's nothing wrong with finishing.If the range of parameters can be widened, the turbofan engine can be developed forward, at least in theory, Wang Yun feels that he should not make any mistakes.

…………

"Professor." The researcher looked at Professor Qin, put the phone in his pocket, and said silently, "Do you really think it's reliable?"

"Oh?" Professor Qin stared at the researcher, "Do you think he is unreliable?"

"It's not that I think he's unreliable. I just think how to say it. It may be because he is relatively young, which gives me a feeling that there may be room for improvement in all aspects."

"I think it's pretty good." Professor Qin began to analyze, "He has also participated in the matter of the Western Polytechnic University. It proves that he is very good at research in fluid mechanics, and he can build mathematical models for turbulent flow models. It just shows that his mathematics is also very good. I am now looking forward to whether he can build a mathematical model for the turbofan engine."

"That's right." The researcher clapped his hands and said, "Why didn't I think of it, if he builds a mathematical model, maybe we can have a chance to work on the model and see if we can catch up with foreign countries in this respect. "

Professor Qin said with a smile, "Now you know why I asked him to come to our experiment? And this subject must be him. Besides him, which researcher at the Center for Mathematics Research of Beijing University is not busy studying mathematics subjects, and we What turbofan engine is this talking about?"

"That's right." The researcher nodded. It is true that the researchers at the Mathematics Research Center of Beijing University seem to be working on their own mathematics projects. Who has time to take care of them, let alone independent property rights such as turbofan engines.It may take several years to help them build a mathematical model.

As for Wang Yun, he did not conduct a math project.Currently in school, just able to spare some spare time to help them with this problem.

It would be best if it could be solved, even if it couldn't be solved.With Wang Yun's talent in mathematics and his understanding of fluid mechanics, there is still a lot to do.This is also the reason why Professor Qin chose Wang Yun. Now, it depends on what step Wang Yun can make.

…………

Wang Yun, who was writing the equations in the library, froze for a moment, looked at the equations and became silent.He considered Reynolds number, he considered viscosity, but he always felt as if something was missing.The back of this cutting-edge paper is a bit too esoteric, and he can't understand it now, but it doesn't matter.

As long as the NS equation can be solved in the future, everything in the later part of the paper can be easily solved.

After all, a lot of fluid mechanics is based on NS equations, that is, fluid momentum.It can be said that turbulence is the most difficult part to understand in fluid mechanics, and it is also the current difficulty.

No one in this world can claim to have truly understood turbulence.

For now, what Wang Yun wants to solve is the difficulty in general fluid mechanics, and as for the turbofan engine, it is just a matter of convenience.Thinking of this, he held his head, always feeling that his head was almost not enough now.

What should be done?Squinting his eyes, he thought for a while, and then wrote down a line of calculations on the draft paper.He had been studying this paper before, but he hadn't been able to understand many parts of this paper before, so he didn't continue to study it.And now, he has understood a lot of things, if he continues to study now...

Well, forget it, even if it is something that is convenient, it is better to build a mathematical model.

Wang Yun began to construct the mathematical model of the turbofan engine. According to the previous parameters, he solved it according to the average NS equation, modified some, and wrote it on the draft paper.

While writing, he suddenly froze, something is wrong, what did he just write? What is the essence of the NS equation?Nonlinear partial differential equations, forget it.Touching his own hair, Wang Yun laughed at himself thinking, thinking about things, it is better to do what is in front of him first.

The pen made a rustling sound when it touched the paper.

The entire library was extremely quiet, with fewer and fewer people.When the sun shone on the table, Wang Yun stood up and stretched slightly.After calculating for one night, not only did he not feel dizzy, but he became more and more refreshed.Holding the mathematical model in his hand and thinking about it, Wang Yun walked out of the library with his materials.

Going directly to the turbulence laboratory, I don't know what Professor Qin will say when he sees this mathematical model.

Wang Yun's mood is still quite disturbed, because these parameters have been modified by him.

When he came to the door of the laboratory, he took a look inside, it was fine, everyone was busy with their own affairs.After knocking on the door, Professor Qin turned his head to look at Wang Yun, his eyes were a little tired, "Come in, you don't need to knock when you enter the laboratory."

"En." Wang Yun nodded, walked to Professor Qin and said, "Professor, this is the mathematical model I built last night, and based on the nonlinear partial differential equation, I still have some ideas about the control system. I will explain it in my thesis."

"Oh?" Professor Qin looked at Wang Yun. He didn't mention the mathematical model to Wang Yun. He didn't expect this little guy to make it directly.

It seems that the researchers at the Mathematical Research Center are really obsessed with mathematical models...Of course, almost every mathematical model is useful.

"Okay, I see, you can put it here, I will read it later." Professor Qin said curiously, "What did you base your mathematical model on?"

"Nonlinear partial differential equation, average NS equation solution." Wang Yun answered Professor Qin directly, "If it can be expanded, I think the optimal control system differential equation has some effect on the control system of the turbofan engine."

Hearing Wang Yun's answer, Professor Qin slowly looked at the draft paper in his hand, "Are you going to write a paper? About what?"

"Application of nonlinear partial differential equations in fluid mechanics." In layman's terms, it is the application of NS equations.

Professor Qin was stunned for a moment, thinking in his heart, would it be too... a little watery if he wrote it like this.

"It contains some ideas and applications about the NS equation." Wang Yun touched the bridge of his nose, "Anyway, I would like to trouble you, Professor, to take a look for me."

"Okay." Professor Qin nodded, "I think you didn't close your eyes all night, right? Go back to sleep first, and just post your paper in my file. Aren't you going to class today?"

"Should write the thesis first and then talk about it."

"Okay then, go back and rest and write your thesis."

"Okay." After Wang Yun smiled at Professor Qin, he turned and walked out of the laboratory.

The researcher looked at the back of Wang Yun leaving, and the corner of his mouth twitched slightly, "Professor, do you think he doesn't understand what a paper is? The application of nonlinear partial differential equations in fluid mechanics is too extensive, right? Almost all of fluid mechanics."

"He just talked about a general framework." Professor Qin shook his head and said, "It's not that his thesis is this, I think it should be about turbulence and turbofan engine."

"This mathematical model is quite well done, take a look." Professor Qin handed the draft paper to the researchers, and asked them to look at the mathematical model drawn up by Wang Yun.

Taking the draft paper from Professor Qin's hand, they looked at it and said in a daze, "I'll go. I can still build a mathematical model like this. Is there something wrong with the parameters in it?"

"No problem." Professor Qin shook his head and said, "He has optimized it, and I am still looking forward to the things about the control system."

Back in his dormitory, Wang Yun asked the counselor for leave, sat in his seat, and turned on the computer.

Afterwards, he opened the word document and frowned. Instead of doing anything, he was thinking.

If the NS equation can be solved, then this paper is considered complete. If the NS equation cannot be solved, the paper can be published, but I always feel that something is missing.

He should be able to write something about the conservation of momentum in fluids.

Yesterday's equation set, Wang Yun opened the equation set that was drafted yesterday and looked at it.If you followed the train of thought of that cutting-edge paper, you raised your eyebrows.

After putting down the draft paper and thinking for a while, Wang Yun was still on the computer and started editing his thesis.

"No." After writing the thesis for a while, Wang Yun shook his head.If he can't solve the NS equation now, then he has to try some phased results.The significance is not just as simple as a paper, but will be of great help to the follow-up fluid mechanics research.

Thinking of this, Wang Yun stood up.It occurred to him that Director Yang is an academician of the Chinese Academy of Sciences, not only a mathematician, but also a scientist.In the area of ​​nonlinear partial differential, he has his own unique insights.Unlike Professor Wan's pure number theory, Director Yang's learning is more complicated.

Turning around, he left the dormitory directly. He had just written a few lines of the thesis, and it was all in English.There is almost no content, and he is certainly not afraid of being plagiarized.

Walking to the Data Research Center, Wang Yun went directly to the director's office.

At this time, Director Yang was arguing on the phone, and Wang Yun stood in front of him very quietly, without speaking.After Director Yang finished arguing, he asked with a displeased face, "What are you doing here?"

"Director." Wang Yun hurriedly smiled and said, "You know a lot about nonlinear partial differential equations, right?"

"That's right." His previous major was this, but Wang Yun didn't do well in number theory, why did he suddenly ask this?He looked at Wang Yun suspiciously, "Why are you asking me this?"

"It's about the H-semivariational inequality. I still don't know much about it." After speaking, Wang Yun put his continuous equations on the table and said shyly to Director Yang, "Show me see?"

"Okay." Director Yang didn't doubt him, and took the draft paper to read it.

"Continuous equations? NS equation solution?" Director Yang put down the draft paper after a while, "Are you embarrassing me?"

"That's not what it means." Wang Yun hurriedly stopped and said, "Look carefully."

"What's interesting." Director Yang muttered, and looked down again.

For a long time, I didn't come back to my senses.

The office was very quiet, and Wang Yun was sitting opposite Director Yang, looking at Director Yang's expression.After a while, Director Yang put down the draft paper in his hand, "Do you want to solve the NS equation?"

"No." Wang Yun shook his head, "When I was building the mathematical model yesterday, I had some ideas, but about this part." Wang Yun pointed to the calculation formula on the draft paper and said, "I don't know much yet, so I want to ask Explain it to me."

"This part?" Director Yang said with a smile while holding the formula Wang Yun pointed to, "If it's this part, I can do the calculation for you once."

As he spoke, he picked up a pen and began to count.

Wang Yun also looked at the calculation seriously, and the entire draft paper was filled with formulas. Finally, Director Yang raised his head and asked Wang Yun, "Do you understand?"

"Understood." Wang Yun nodded, "I see, I seem to know what to do."

"..." Say it as if you can solve the following series of equations.Wang Yun was about to leave with the draft paper, Director Yang said in a deep voice, "Wait for me."

"Ah?" Looking back, Wang Yun looked at Director Yang with a confused face, "Do you have anything else to do?"