I really just want to be a scholar

Chapter 611 The sick Ning Qingyun, and the best time

In the laboratory of Academician Jiang Weixian, Qin Ke and Ning Qingyun had a very fulfilling and busy life. In the morning, they studied the existence of smooth solutions of NS equations in three-dimensional space, and in the afternoon they worked in the "Turbulence Group" on fluid flow. Applied experiments in mechanics.

The S-level knowledge in Qin Ke's hand "Exploration and Detailed Explanation of the Nonlinear Partial Differential Equation 'Navier-Stokes Equation'" has very rich theoretical knowledge, including the mass conservation and momentum theorems of NS equations , Detailed explanation of energy conservation, the relationship between NS equation and Euler's method, the change of NS equation in Newtonian fluid and incompressible fluid, etc.

In addition, there are variants such as the Euler equation and the boundary layer equation, and there are more than 1000 specific applications under special solutions—you must know that there are only more than 100 special solutions published in the world—a total of more than 600 pages.

But there is no complete answer to the existence of smooth solutions of the NS equations, and there is no clear proof process, let alone the so-called general solutions of the equations.

It can be said that the first, second, and second chapters are more about the theory and application of the NS equation, which is enough to make Qin Ke, who is already good at fluid mechanics, a master of it, but he cannot directly get the mathematical conjecture of the millennium. Answer.

If Qin Ke's guess is correct, the question of "the existence of smooth solutions to NS equations in three-dimensional space" and whether there are general solutions to NS equations can only be answered in the final chapter.

This kind of knowledge arrangement is reasonable. First of all, no one can deny that the NS equation is a problem that combines mathematics and physics. Only through the theory and application knowledge of the first, second and second chapters can we understand the NS equation itself more deeply.

For example, when will the NS equation have a solution?

That is, for specific application problems, the additional preconditions of the equation are introduced, so that the previous variables of the NS equation become quantitative one by one, and the nonlinear partial differential equation is transformed into a normal partial differential equation, and the solution can be obtained naturally. And solve the problem of hydrodynamics under the set conditions.

But such a new problem will arise again. The NS equation will have a smooth solution only in a specific case, and there is no general solution in a general sense.

This means that if you want to use NS equations to solve specific fluid mechanics problems, you must obtain the special solutions and preconditions obtained by others in advance; untie.

Such efficiency is undoubtedly inefficient, just like manual workshops can only rely on craftsmen's manual skills for production, which is prone to defects, errors and omissions, and cannot realize modern automatic assembly line operations.

And it is undeniable that without practice and research in manual workshops, it is impossible to evolve into an automatic assembly line all at once.

This is also the basis and progressive effect of the first, second and second chapters of "Exploration and Detailed Explanation of the Nonlinear Partial Differential Equation 'Navier-Stokes Equation'".

Now Qin Ke basically understands the mathematics part of the first, middle and second chapters, and can even use his "grandmaster level" mathematics level to spend time solving this millennium problem, without having to wait for the mathematics in the final chapter part.

Only the content of the physics part, because there are only "professional level" physics levels, there are still [-] to [-]% that cannot be fully understood, but as he has mastered more and more experimental methods and skills in the "turbulent flow group", he is constantly improving. Translating theoretical knowledge into practice, these incompletely understood physical theories will all be conquered sooner or later.

All the research and application materials related to the NS equation that the research group has read before have been of great help to Qin Ke. Understanding of the physical part of the first, second and second chapters of "Exploration and Detailed Explanation of the Nonlinear Partial Differential Equation 'Navier-Stokes Equation'".

For Ning Qingyun, it is even more useful. Ninety-nine percent of her knowledge about fluid mechanics comes from self-study textbooks, and Qin Ke taught it through "thinking resonance". This time, she carefully read most of the materials——Ning Qingyun later I often go to the reference room to continue to read the materials - which greatly enriched Ning Qingyun's vision, and also deepened her understanding and application of the NS equation.

Especially the current task undertaken by the "Turbulence Group" - "Improving the aerodynamic characteristics of near-space vehicles in hypersonic thin air", academician Guo Weiyang, the deputy director, directly asked Qin Ke and Ning Qingyun to take charge of the most important mathematical modeling and experiments The program writing work is an extremely rare exercise opportunity.

In general, the two are currently jointly attacking the existence of smooth solutions of NS equations in three-dimensional space. The progress is not fast, but it is steady, and mathematics and physics are advancing simultaneously, and both of them are fully committed to it .

Once this millennium problem is solved, their understanding and application of the NS equation will surpass most mathematicians and physicists in the world.

……

Snowflakes have fallen outside the window at some point, and the snowstorm in the sky means that the deep winter in December is approaching quietly.

As Christmas Eve approaches, Qin Ke's 21st birthday is also approaching.

Looking back on the past year, Qin Ke himself is also very emotional.

At the age of 20, he proved Goldbach's conjecture and Riemann's conjecture successively, and won international awards including the Crawford Award, Ramanujan Award, and Fields Award. Small awards can be said to be full of harvest.

What makes him most proud is not his academic achievements, but that his love with the cabbage Ning Qingyun has not been diluted by the years, or has lost its freshness and turned into a family relationship.

On the contrary, they have worked hand in hand with Ning Qingyun over the years and got along with each other little by little, making the relationship between the two of them like mellow fine wine, getting stronger with time.

"It seems that we have to plan well for this year's Christmas Eve." Qin Ke stroked his chin, thinking about Christmas Eve three days later.

Last year's Christmas Eve and birthday, because of the accident of the senior Chen Licheng, both of them only cared about justice for Chen Senior, and did not celebrate it specially. Even Qin Ke's birthday was made up after the fact.

And this year's Christmas Eve happened to be Saturday, so Qin Ke decided to celebrate it.

But just after he asked his assistant Fang Yongtang to arrange the event, an accident happened. Ning Qingyun had a cold and a fever the day before.

At that time, Ning Qingyun was looking through a document in the reference room by himself. Qin Ke was not with Ning Qingyun because he was called by the deputy director, academician Guo Weiyang, to ask some details about the NS equation.

When Qin Ke went to look for Ning Qingjun after he was busy, he saw Ning Qingjun rubbing his forehead, and couldn't help asking: "Why, are you tired?"

When Ning Qingyun turned her head, Qin Ke immediately saw that the girl's face was flushed with an unnatural blush, and her eyes were blurred like mist.

Qin Ke's heart couldn't help beating nervously, and he went over to touch Ning Qingyun's forehead, it was very hot, obviously he had a high fever.

Qin Ke felt distressed and flustered. You must know that since Ning Qingyun practiced the Oriental Secret Code, her physical fitness has improved a lot, and her resistance to viruses has increased significantly. She has almost never been sick in the past three years. Suddenly a high fever came!

And judging by Ning Qingyun's appearance, it shouldn't be a sudden fever, but a period of time, and he didn't notice it!

Qin Ke couldn't help blaming himself secretly. Recently, he was either thinking about NS equations, quantum computing, and extreme weather data analysis, or he was planning an event itinerary for Ning Qingjun as a surprise, but he ignored the abnormality of the girl around him.

"You have a high fever, let's go, I'll take you to the infirmary." Qin Ke could not help but pick up Ning Qingyun.

"Qin Xiaoke..." Ning Qingyun felt that his body was hot and cold, his hands and feet had no strength, and his brain was dizzy and uncomfortable, but at this moment, seeing Qin Ke's anxious, distressed, and worried expression, he couldn't help but change. Get warm:
"I'm fine...Maybe my mother called just after washing my hair last night. I just dried my hair after the phone call. Some caught a cold. I got a little fever in the morning. I took medicine and nothing happened. I thought it was just Well, I didn't expect to have a fever again this afternoon..."

"Why didn't you tell me when you were sick..." Seeing the girl's frail frowning, Qin Ke only halfway through the words of reproach disappeared, leaving only worry and heartache: "It's hard now?"

"Just a little headache and dizziness..."

Qin Ke didn't dare to delay any longer, quickly took out his mobile phone, and called Chen Ming: "Brother Ming, drive to the lab building and wait for me downstairs."

After returning to school, someone else secretly protected Qin Ke and Ning Qingyun. Chen Ming and Chen Lan usually waited outside the school, and followed them quietly when they left the school.

Qin Ke became impatient at this moment, and didn't know the phone number of others, so he called Chen Ming directly.

Chen Ming's voice tightened: "Wait, I'll be there in 2 minutes!"

Qin Ke put away his phone, picked up Ning Qingyun's small schoolbag beside him, took out the scarf inside and tied it up for the girl, then put on her down jacket, picked Ning Qingyun up in his arms, and walked out quickly reference room.

Fortunately, Ning Qingyun usually wears pants in school, so she doesn't have to worry about losing her clothes when she is holding them horizontally.

The members of the research team were taken aback when they saw this: "What's wrong with Junior Qingyun?"

"Qingyun has a fever. I need to ask for leave for a long time. Tell Academician Guo for me." Qin Ke didn't have the time to explain, and ran out with Ning Qingyun in his arms without saying a word.

I took the elevator of the laboratory building to the first floor, and it was snowing outside. The white snowflakes covered the whole world, and the north wind whizzed past, taking away the heat in the air.

The temperature is probably only five or six degrees below zero, and there are not many pedestrians on the school road as far as the eye can see.

Qin Ke hugged the girl in his arms tightly. Seeing her burning red face, he felt extremely distressed: "It's okay, I'll be in the infirmary soon."

"Well... I'm fine, don't worry..."

Qin Ke smiled at the girl, but his heart became more and more anxious. Under such bad weather, can Chen Ming arrive in 2 minutes?
Fortunately, there is heating on the first floor of the laboratory building, and the security guard came over to help, but Qin Ke shook his head and declined.

At this moment, the car lights came on in the wind and snow, followed by sudden braking. Chen Ming's car broke through the wind and snow, flicked its tail, and stopped accurately at the gate.As expected of a secret service officer, his driving skills are strong enough.

Normally, Qin Ke would definitely make a joke with Chen Ming, so he couldn't care less about it at this time.He rushed out of the building with Ning Qingyun in his arms. Chen Lan, who was originally sitting in the co-pilot, had already pushed the door out. Seeing this, his expression changed, and he helped open the rear door.

Qin Ke quickly sat in: "Go to the school's infirmary!"

Chen Ming didn't say anything, when Chen Lan jumped into the car, he immediately stepped on the accelerator, the car roared, and then sank into the wind and snow.

When we arrived at the infirmary, there was another flurry of flying and jumping. The female doctor in the infirmary recognized that Ning Qingjun was sick. fell asleep on the bed in the room.

Qin Ke held her cold little hand, pressed it to his face, and warmed it with his own body temperature.

Especially seeing the girl's delicate willow leaf eyebrows furrowed uncomfortably, Qin Ke felt distressed again.

Although the female doctor said that it was just a cold and a cold, and the fever would subside after half an hour after taking the antipyretics, Qin Ke, who hadn't seen Ning Qingjun sick for a long time, still stayed by the bed.

Even though there was movement outside, it seemed that Principal Huang, Vice President Gu Bojun and other school leaders were alarmed and came here. Soon after, Academician Tian Jianlan, Academician Guo Weiyang, and Mr. Qiu also came.

Qin Ke didn't get up to leave, how could he rest assured that Ning Qingyun, who was still running a high fever, would be left alone?Not even for a little while.

Fortunately, the antipyretics took effect in about half an hour. The electronic temperature measuring gun showed that Ning Qingjun's body temperature dropped from 39.3°C to 38.1°C, out of the category of high fever. After recovering the temperature, the hanging heart was only half relieved.

The school leaders and academicians who came to visit Ning Qingyun, as well as the director of the Department of Mathematics, Wei Yuanfu, probably knew that Qin Ke was worried about Ning Qingyun, so they didn't come to disturb the two of them. They just left one after another after learning about the situation through the female doctor. , before leaving, repeatedly told the female doctor to take good care of Ning Qingyun, and arranged for the cafeteria to urgently prepare nutritious porridge for delivery.

The female doctor was sweating on her forehead. It was the first time she had seen so many important figures visiting, and she realized again that the school attached great importance to these two youngest specially-appointed professors.

However, it was difficult for her to take care of Ning Qingyun personally. Qin Ke was always by his side, wiping Ning Qingyun's sweat and applying cold towels himself.

Ning Qingyun slept until after eight o'clock in the evening, and her body temperature gradually returned to normal, leaving only a low-grade fever.

For fear of affecting Ning Qingyun's rest, the room did not turn on the lights, but the light reflected from the piled white snow squeezed in through the gaps in the curtains, still able to outline the pretty outline of the girl on the bed.

Ning Qingyun's originally tied-up hair had been untied by Qin Ke. The soft black hair spread like a waterfall on the snow-white sheets and quilt. The girl's originally red face had returned to its usual whiteness and tenderness. The tightly closed eyes couldn't see the flexible light, but the long and curled eyelashes made the girl's peaceful sleeping face a little more cute.

Qin Ke held Ning Qingyun's little hand and looked at her quietly.

It's been a long time since I watched Xiaobaicai fall asleep for such a long time. Usually, the two only live together on weekends, and when they wake up in the morning, they wake up tacitly together at about the same time.

Qin Ke suddenly discovered that he had been too focused on academics and scientific research in the past year, and he was busy every day. Although he also went out to play and date with Ning Qingyun, he still lost a little bit of the good time of getting along quietly like this.

Starting tomorrow, the pace will slow down.

Life is so long, what is the rush?You must take a closer look at the most important girl around you, and you must stop being so full of academic research that you don't even notice that she is sick.

The scenery on the road of life is more beautiful if you savor it carefully.

Qin Ke leaned over, kissed the girl's tender face lightly, and reminded himself secretly again in his heart.

　Thanks for the rewards of "Surge in the Wind", "Xian Zhuo", and "Want to be a lazy idle fish"!

　　
　
(End of this chapter)