National Top Stream

Chapter 151 Three-Phase Flow

Zhuang Weiran explained, "It can also be called the seven major problems of world mathematics."

"I said so, right?"

No one else spoke, the army officer nodded lightly, "Then, can Professor Zhuang continue?"

"Of course." Zhuang Weiran said with a smile, "Yang-Mills existence and mass interval and Navier-Stokes existence and smoothness are essentially problems on nonlinear partial differential equations. I have solved The problem of Yang-Mills existence and mass interval, if I can solve the problem of Navier-Stokes existence and smoothness, of course I can continue to study."

"It sounds like both of these problems are problems of nonlinear partial differential equations." The officer concluded, "Then, Professor Zhuang, can you tell us about the relationship between our project and these two problems?"

"The Navier-Stokes existence and smoothness problem describes the equation describing the viscous Newtonian fluid in fluid mechanics. It is an equation that has not been completely solved. Only about 100 special solutions have been solved. It is the most One of the most complex equations. Undulating waves follow our small boat as we wind our way across a lake, and turbulent air currents follow the flight of our modern jet aircraft. Mathematicians and physicists are convinced that whether it is a breeze or a turbulent current, Both can be explained and predicted by understanding the solutions of the Navier-Stokes equations. Although these equations were written in the 19th century, our understanding of them is still very small.1”

"Mr. Officer, what do you say is the connection between Navier-Stokes existence and smoothness and Yang-Mills existence and mass interval? What kind of connection does it have with this project?"

After listening to Zhuang Weiran's narration, the officer said with a smile, "So, Professor Zhuang is still doing his old job?"

"It's an old profession." Zhuang Weiran also laughed, "Then, Mr. Officer, do you have any questions?"

"No more." The officer shook his head gently, "Since Professor Zhuang has explained it clearly to us, then Professor Zhuang can explain to us your views on this project."

"Okay." Zhuang Weiran raised his head, cleared his throat, and said loudly, "As we all know, all new aircrafts now require turbulence experiments. The most important part of turbulence experiments is the existence of Navier-Stokes with smoothness issues.”

"First." Zhuang Weiran shook a notebook in his hand, "I have deduced the entire calculation equation we are doing now, including the core part, based on the nonlinear partial differential equation that Professor Ji gave me."

"I regret to announce that it is impossible to make a new type of aircraft according to the current calculation method, or to continue with the current concept." Zhuang Weiran paused for a while, and the officers of the army were also stunned, and began to whisper Talk about it.

Zhuang Weiran suddenly announced that it was impossible to make a new type of aircraft according to the previous method. For them, things that took several years were in vain.Whether it is emotionally or in terms of time, it is somewhat unacceptable.

"Professor Zhuang, are you sure?"

"Mr. Officer, you might as well ask everyone."

Elder Qian said out loud, "Professor Zhuang is right. We calculated it with a supercomputer, and it is indeed impossible."

"Does that mean we have to start from scratch?" Most people in the army began to frown. There is not so much time. The Ministry of National Defense has spent so much money, and now it is all in vain.Thinking about it was still very uncomfortable, Zhuang Weiran looked at their faces with different expressions, some were serious, some were frowning tightly, all of them looked very difficult.

"Of course, it's not without good news." Zhuang Weiran put down the notebook in his hand and picked up another notebook, "This is the new type of aircraft that I deduced that the Lighthouse Country is going to manufacture."

"I can say that the new aircraft of the Lighthouse State is absolutely correct in theory, but in terms of calculation, because of the problem of their calculation method, and I have given them a lot of traps. Within a few years, they will not be able to do it at all." come out."

"Professor Zhuang, when did you come into contact with the military industry in the Lighthouse Country?"

"Unfortunately." Zhuang Weiran looked at the questioning officer, "I have never been in contact with it. I derived these based on some questions given to me by Professor Richard Feufman when I was teaching at Princeton University."

"Of course, you don't have to believe that I can deduce their core formula." Zhuang Weiran said with a smile, "It's also hard for me to imagine that there is a second person in this world who can have this derivation ability."

"But I still want to declare that I have deduced all their formulas, and I regret to tell you that their theories are correct, and the calculations were wrong from the very beginning. The traps I gave them are adding to the mistakes."

"I can guarantee that within a few years, they will not understand what kind of trap I set for them. We can seize this gap and start research and development, and even upgrade the existing theoretical research and development based on the theory The next generation of new aircraft." After Zhuang Weiran finished speaking, the officer asked, "Professor Zhuang, how sure are you?"

"Less than 50.00%." ​​Zhuang Weiran replied honestly, "Unfortunately, our confidence is not much higher than that of the Lighthouse Country."

"Even with you?"

"That's right, even with me, our chance of success is less than 50.00%." ​​Putting down the notebook in his hand, Zhuang Weiran looked at the officer, he hesitated to speak.

"Please tell me, since it's a meeting, it's natural to say whatever you want."

"I'm thinking about a question. Do you personally think it is necessary to continue this project?"

"Yes." Zhuang Weiran said decisively, "I personally think that this project is necessary to continue. Air and space power is also a part of national defense. The Lighthouse Country has been researching new aircraft for several years. We already have a relationship with them. The generation difference, now is not only the time to smooth the generation difference, but also the time to overtake on a curve, why don’t we continue to study it.”

"But... isn't there a chance of less than 50.00%?"

"Even if there is only a [-]% chance of researching it." Zhuang Weiran looked at the officer firmly, "As for whether I can continue to study it, I can't decide."

The officer was silent for a long time, "Professor Zhuang, we can continue to invest, but I think we should at least let us see some results."

"Mr. Officer." Zhuang Weiran said with a smile, "Don't worry, I hate studying one project for a long time."

"My surname is Xie." The man said with a smile, "The military rank is a colonel."

"Okay, Colonel Xie." Zhuang Weiran shook hands with the man, "I will definitely notify you as soon as the results come out."

"Professor Zhuang, what you said is very good. After I go back this time, I will tell my superiors exactly what you just said, and I will also pass on what you just said to my superiors. We all hope that the results will come out sooner, don't we?"

"That's the end of this meeting."

After Zhuang Weiran sat down, he breathed a sigh of relief when Senior Colonel Xie came over and said to Zhuang Weiran, "Professor Zhuang, I personally want to ask you a few questions. I don't know if it's convenient for you."

"Okay." Zhuang Weiran and Colonel Xie walked out of the meeting room, and Colonel Xie said, "Professor Zhuang, I have a hard time understanding how you deduced all the research and core information on the Lighthouse Country, and how you deduced The core data on our side?"

"Can you help me answer it?"

Colonel Xie and Zhuang Weiran stood in the corner, while the others left slowly.Zhuang Weiran turned around and glanced at Colonel Xie, he said with a smile, "Believe it or not, let me tell you this. Professor Feffman asked me to help him deal with some not particularly important mathematical data, and Show me some unimportant equations. I derived their entire theory and calculations through these equations. I personally set a lot of traps in their data. Although it is unimportant data, once it spreads to the core data , there will be a domino effect.”

Colonel Xie pursed his lips, his expression dignified and serious.

"As for the core data you said on our side, it was also because Professor Ji asked me to calculate a few formulas, and I derived them from them. In fact, these formulas have been around for several years, and I didn't dare to derive any of them."

"Speaking of which, maybe we released some unimportant data, or accidentally leaked it, which would also cause this situation?" Senior Colonel Xie pondered, very difficult.

"I don't think so." Zhuang Weiran shook his head lightly and said, "Let me tell you this, maybe there is no one in the world except me who can complete the whole world from some irrelevant equations and data. Deduce the entire core formula, data, and theory." Zhuang Weiran is very confident, "So, you don't have to worry about this, because of this, the lighthouse country dared to let me do some irrelevant formulas and data processing. They didn't It would never have occurred to me that I have already deduced all their calculations, and there may be a certain deviation, but it will not be too large. The deviation is within the controllable range."

"Professor Zhuang has your words, so I feel relieved. Since you have already said that, then I will not ask about it. I am not very familiar with your research." Colonel Xie said with a smile , "I heard that you are the nephew of the old chief."

"En?" Zhuang Weiran raised his eyebrows lightly, "What do you mean?"

"He Zhengang."

"It's my second uncle." Zhuang Weiran asked, "What's wrong?"

"No." Senior Colonel Xie looked at Zhuang Weiran, "It's just that I didn't expect Professor Zhuang to be young and promising."

"Let's have a meal together." Colonel Xie smiled, "It's just time for lunch."

After dinner, Zhuang Weiran returned to the laboratory again. He began to study the existence and smoothness of Navier-Stokes. Other professors did not bother him and were doing mathematical models.

Until the evening, when it was almost ten o'clock, Zhuang Weiran suddenly asked a question, "How do you compare three-phase flow and multi-phase flow?"

Everyone looked at each other in blank dismay, Qian Lao frowned, "The three-phase flow is only a theory at present, and it may be very difficult to implement it. The lighthouse country hasn't researched it yet, right?"

"That's right." Zhuang Weiran nodded and said, "Three-phase flow hasn't been researched yet. Since everyone hasn't researched it, why didn't we research it, but someone else did it?" His question made everyone unable to answer. In fact, this is not a question of whether it can be researched or not.There are so many top countries in the world, plus their Huaguo.I haven't been able to research it. This thing can be researched if I want to.

"Professor Zhuang, aren't you being too ambitious?" Elder Qian coughed softly and said, "This thing is really not easy to handle."

"En..." Zhuang Weiran nodded, "I'll think about it again."

"It's getting late now." Mr. Qian looked at the time, "Hurry up and go back to rest. If Professor Zhuang has any questions, we'll talk about it tomorrow."

"mathematical model……"

"It's being done." Old Qian said with a smile, "We've already started working on the mathematical model based on your theory, but we're not sure when it will be ready."

"Right now, it's time for a holiday."

"There's still a day or two left, but we can't let it go on vacation." Qian Lao said with a smile, "Does Professor Zhuang have any plans before?"

"Do Hodge's conjecture, but it is estimated that it will not work now, and it will take a lot of time."

"Professor Zhuang." Qian Lao said with a smile, "It seems that it has delayed your selection as an academician."

"Where." Zhuang Weiran said with a smile, "To be honest, I don't really care about being selected as an academician or not. Besides, it's not that Longcheng University has no academicians. There are more than ten academicians in the Department of Mathematics alone. So If there are more academicians, there will be no more academicians, and if there are fewer academicians, there will be no more academicians."

"Professor Zhuang's words are very resentful."

"What resentment?" Zhuang Weiran said amusedly, "I'm just telling the truth. Originally, there are quite a few academicians in Longcheng University, and I'm not the only one behind."

"So." Mr. Qian said with a smile, "How about Professor Zhuang take a look at this? How about you come to Huake National Defense University as a professor? We will definitely welcome Professor Zhuang very much. Our mathematics department is short of professors like Professor Zhuang." ..."

"It's not necessary." Zhuang Weiran said with a smile, "I have stayed in Longcheng University quite well, and I don't want to change jobs yet."

"You still want to poach people at Longcheng University, don't worry about being poached by Longcheng University." Professor Ji next to him said with a smile, "Wei Ran has learned the skills of Director Zhou. Your professor is more optimistic, Zhuang Weiran may be fooled by him one day."

"Oh?" Qian Lao looked at Zhuang Weiran and said, "It seems that Professor Zhuang wants to be the dean of the Faculty of Science of Longcheng University."

"I don't have that kind of thought." Zhuang Weiran hastily denied, "I only have one doctoral student from abroad now, and I haven't accepted graduate students yet."

"It's better to be a professor. You don't need to do anything. You just need to do your job well. It's uncomfortable to be an academician or not, or a dean or not."

"Professor Zhuang, you seem to be quite at ease now."

"I'm leaving." Zhuang Weiran said in a teasing voice, "I have to go back and continue to think about how to do this problem. In terms of calculations, I will continue to calculate mathematical models and turbulence experiments. I am really not special. You are good at it, Mr. Qian, I heard that you are very good at this aspect, especially the turbulent flow. Don’t delay, Mr. Qian will host the turbulent flow.”

"I'm just a passer-by watching, just look at it, and I can't make any comments. Professor Ji is very good at applied mathematics. In terms of handling mathematics, I have to trouble Professor Ji."

"You kid, are you starting to be lazy?" Professor Ji said with a smile, "So you don't want to do things well?"

"I don't want to do things well." Zhuang Weiran smiled playfully, "Isn't this a calculation? The main reason is that the calculation is really difficult. Seniors, please tolerate me as a junior."

"You boy, you are the only one who is proficient in mathematics. We are all good at it. But what we are good at is not as good as you."

"You can't say that." Zhuang Weiran coughed softly, "Actually, I still have a lot to learn from you seniors, so what, I'll go first."

After leaving the laboratory, Zhuang Weiran really didn't dare to stay any longer, he was afraid that these professors would attack him again.

Take a breath of fresh air outside, and the cool wind blows with a hint of coolness.It seems that we have to add another piece of clothing tomorrow, Zhuang Weiran thought about going downstairs, with the card hanging on his chest, and the patrolling sentry saw Zhuang Weiran, and walked away, not caring that the one in front of him looked a little small, shouldn't people staying here.When I came to the gate, just after swiping the card, the sentry at the gate glanced at Zhuang Weiran, saluted him and said, "Hi, please tell me your name, age, and position."

"Zhuang Weiran, 20 years old, the chief consultant of the turbulence laboratory." He finished calmly. The sentry was writing seriously, but when he heard Zhuang Weiran's words, he raised his head in disbelief. He took off the card on his chest and handed it to him. to the sentry.

Looking at the name, age and position on it, the sentinel was stunned for a while before returning the card to Zhuang Weiran.Embarrassed with a shy smile, "I'm sorry, Mr. Zhuang, because this is your first time here..."

"So the inspection should be stricter." Zhuang Weiran shook his head, "It doesn't matter, can I leave now?"

"Yes." Zhuang Weiran walked out of the laboratory building, and there was someone standing beside him, as if they were chatting.It is so late, the sound is still relatively soft, and it is still in the Institute of Physics, and the lights are very bright.

After walking a few steps, I heard a familiar voice, "Rui Ning."

Turning around, He Ruiwei walked towards him with big strides and a smile, "Rui Ning, when did you come?"

"Today." Zhuang Weiran said with a smile.

"Rui Ning works here?"

"No, I was invited here, it's considered a business trip." Zhuang Weiran said impressively, "I seemed to see Brother Ruiwei this morning, but Professor Ji let me into the building before I had time to look carefully."

"So Rui Ning, you are in the building, no wonder I didn't see you."

"En?" Zhuang Weiran asked suspiciously, "Brother Ruiwei, have you never gone in?"

"Not everyone can enter this building. We don't have permission to enter, so we can only guard outside. But the shift will be changed soon, where is Rui Ning going?"

"Going to bed, just got off work." Zhuang Weiran said with a smile, "Are we sharing the same cafeteria?"

He Ruiwei shook his head, "It's really not that they share the same cafeteria, Rui Ning, you should go back and rest first."

"Hey." Zhuang Weiran nodded, and He Ruiwei guessed that he still had some tasks to do, so he simply said a few words to him and left.

Looking at He Ruiwei in the distance, Zhuang Weiran smiled and shook his head.

He is indeed a bit tired now and wants to sleep.And, how to solve the problem of three-phase flow and multi-phase flow?If we can break through the problem of three-phase flow, it can be said that in terms of turbulence, Huaguo is simply overtaking other countries in a corner for more than ten years or even decades.