I really just want to be a scholar

Chapter 587 "Air Turbulence and Climate Prediction" Research Group
Fluid mechanics is a branch of mechanics. It sounds like it’s on the same level as gravity, and it’s nothing special, but in fact fluid mechanics involves a wide range of levels and holds a very high position in the mechanics system.

From the movement of the ocean to the movement of leaves blown by the wind, to human blood and breathing fluctuations, all belong to the scope of fluid mechanics research. In addition, atmospheric circulation, aerodynamics, etc. also belong to the research goals of fluid mechanics.

Human civilization is now inseparable from fluid mechanics, from the design of small fans to the shape of automobiles, submarines, even aircraft engines, and the design of high-speed rail, subway, and voyage ships, all are closely related to fluid mechanics.

Fluid mechanics also has many subdivided branches. For example, Computational Fluid Dynamics, which Qin Ke is best at, is an emerging discipline developed by combining computers, precision experimental instruments and mathematical analysis and modeling. In addition, there are aerodynamics, electromagnetic fluid mechanics, Fluid dynamics, physical-chemical fluid dynamics, multiphase fluid mechanics, environmental fluid mechanics, biorheology, etc.

Just like Professor GI Taylor, a well-known physicist in Eagle Country who demonstrated "proved the Taylor-Proudman Theorem", said: "Every specific theory or numerical method is temporary, and for flow Essential understanding is eternal.”

Fluid mechanics involves a wide range of areas and is very difficult, especially the problem of turbulence, which is an eternal problem. In addition, it has an extremely extensive impact on human technological civilization. Countless physicists who think they are geniuses plunged into this big pit with confidence. Most of them have never been able to climb out again, or after finally climbing out, they quickly changed their careers and studied in other directions. They dare not touch fluid mechanics again, so that fluid mechanics is called "the destruction machine of physical genius".

By the way, Professor GI Taylor, who was mentioned just now, also finally "woke up" after studying fluid mechanics for decades, and changed his career to study underwater bombs...

And on September 9rd, Qin Ke and Ning Qingyun walked into the experimental building of the old academician Jiang Weixian, plunged into the bottomless pit of fluid mechanics, and what awaited them was a soaring sky or So sinking?
——This is the thought that flashed through the hearts of many faculty members, graduate students and even doctoral students who witnessed the two entering the laboratory building of Academician Jiang.

……

Academician Jiang Weixian, as the leading academic leader of Qingmu University, is the chief researcher and lifelong researcher of the National Key Aerodynamics Research Laboratory, and a first-class winner of the national self-study science. He enjoys a high reputation both domestically and internationally.

His academic achievements are even more fruitful. Many far-reaching theoretical achievements have been born in physical materials, fluid mechanics and even dynamics. It is said that the largest self-produced large aircraft in China refers to Academician Jiang in terms of engine and shape design. The research results are finalized.

And he is also very good at leading disciples. There are no less than [-] physics masters who have come out of his disciples. Except for a few who have been rated as academicians and national scientists, the rest are all from various research institutes and large-scale scientific research institutes. The person in charge of the laboratory or the backbone of the core technology has no less than ten people who have served as the head of the physics department or the dean of the physics school in universities around the world.

A big cow like Jiang Weixian is naturally a national treasure in Qingmu University. The school gave him the highest treatment, and built a large experimental building for him, only for Academician Jiang and his nine research groups. use.

The name of this experimental building is "Qingmu University Aerodynamics Research Laboratory", which actually includes several research directions, such as physical materials, aerodynamics, and several subdivisions of fluid mechanics, which belong to the national key level research institutions.

Academician Jiang Weixian was waiting for Qin and Ke in his office. He didn't say hello to them when he saw them, but simply said: "When you come, prepare to officially start the internship with the class. I know that you have achieved good results in mathematics. The results, but these brilliant results are all cleared after you come to my physics laboratory, you are just ordinary trainee researchers, don't be proud and complacent, let alone feel superior, you know?"

Qin Ke knew that this was a necessary "killing stick", and he was not at all dissatisfied with the teacher's stern face preaching. Instead, he said seriously: "We must correct our identities and learn from our seniors with an open mind!"

Ning Qingjun also solemnly made the same statement.

A gleam of satisfaction flashed in Jiang Weixian's eyes, but he still said with a straight face: "Okay, from today you are the trainee researchers of the 'Air Turbulence and Climate Prediction' research group, and we will see your performance or improvement in a year's time." , or expulsion. Although you are my disciples, you don’t get any preferential treatment in it, and you even have to work harder than anyone else, can you do it?”

Qin and Ke said in unison: "Yes!"

Jiang Weixian finally showed a gentle smile on his face: "Then come with me. You will stay in this research group for the next year. I will give you a general introduction."

According to the introduction of Academician Jiang, Qin Ke and Ning Qingyun were assigned to the "Air Turbulence and Climate Prediction" research group. The title is very short, but the research content is extremely complicated, including: the application of NS equations in Research on the causes of irregular circulation, weather forecasting, extreme weather forecasting, etc. This research group has a long history and has been established for more than ten years. It is not well-known to the outside world, but it is a key research group that Jiang Weixian attaches great importance to and personally leads. .

The entire research group occupies the sixth and seventh floors of the experimental building, including the office conference room lounge, the experimental simulation area, and even a small computer room dedicated to the processing of meteorological data.

"Mr. Jiang, how much funding do you have for this project every year?" Qin Ke asked curiously.

Generally speaking, academicians also need to apply for project funding. Qin Ke has learned the relevant funding application and reporting procedures when he helped Professor Hu Qingfeng and Professor He Liangfu as project assistants.

Jiang Weixian said calmly: "At the beginning of each year, [-] million will be allocated at the beginning of each year. There is no upper limit. When the burning is over, a report will be made, and the upper management will basically approve it."

Qin Ke: "..."

Ning Qingyun: "..."

What is invisible pretense, this is invisible pretense!

Like Professor Hu Qingfeng, the general state funding he applies for is only about 200 million yuan, mainly for research projects in cooperation with enterprises, and the exaggerated 500 million yuan is only available with the financial support of enterprises.

It's good for Jiang Wei first, the unit of one hundred million is the first thing he said!
And it's just the funding of a research group![-] million per year for a research group?Are you sure it's not Japanese yen?And there is no upper limit?
Sure enough, a boss is a boss!

Such exaggerated funds made Qin Ke even suspect that the research group of Jiang Weixian, an old academician, is related to the survival of mankind...

Ning Qingyun was also speechless: "Your research group spends money doing experiments?"

Jiang Wei first glanced at the two of you, with the look that you still need to see more of the world: "10 million to [-] million yuan a year is a lot of research funding? The electricity bill of a particle accelerator can burn [-] billion yuan a year. This is just a small project for me. .”

Qin Ke discovered that Mr. Jiang himself looked serious and informal, like a stubborn old pedant, but in his heart he was the same as his former high school math teacher Zheng Jianzhou, a master who liked to pretend.

Can you, a research group that studies aerodynamics and climate, be compared with a nationally important instrument like a particle accelerator?

However, Jiang Weixian's attitude also made both Qin Ke and Ning Qingyun strongly interested in the somewhat mysterious and low-key research group they were about to join.

Jiang Wei took the two of them out of the elevator first, pointed to the spacious office and continued to introduce.

There are a total of 150 people in this research group, including 36 researchers at the researcher level, 51 at the associate researcher level, 29 postdoctoral fellows, and the rest are just graduated or currently studying doctoral students.Of course, doctoral students can only be trainee researchers here, graduate students... are not even qualified to come in and clean.

It can be seen that the specifications of this research group are so high that it is worthy of being a high-end research group that burns more than 1 million yuan a year.

Qin Ke and Ning Qingyun exchanged glances tacitly, knowing that as physics students in Yanyi, they could become trainee researchers like a group of doctoral students, which is probably the first time in the history of the research team.

Teacher Jiang Weixian said on the surface that "disciples don't have any preferential treatment", but in fact the preferential treatment is quite generous. At least there is no third graduate student in the whole school who can enter this research group.

When Academician Jiang Weixian led the two into the office, all the members of the research team who had already received the news had been waiting for a long time at home, and they all stood up to say hello: "Academician Jiang!" "Hello, Academician Jiang!"

It can be seen that Academician Jiang's prestige is very high.

The members of the team are all between 40 and 27 years old, and some of the younger ones are also [-] or [-] years old. It is estimated that they are PhD students or have just graduated.

Jiang Weixian said indifferently: "This is Qin Ke and Ning Qingyun mentioned before. I believe you all know each other well, so I won't introduce any more. They officially join our research group from today. They don't understand anything when they first come. Learn, give them more pointers when you have time."

Immediately there was warm applause in the office, and countless curious and surprised eyes fell on the two of them, and naturally there were some scrutinizing eyes.

Although the old academician Jiang Weixian asked everyone to give more advice to Qin Ke and Ning Qingyun, most people present did not dare to put up the airs of guidance, even if their qualifications were far older than these two young people.

Not to mention the unrivaled dazzling achievements of these two young people in mathematics, and the titles of researchers in the Department of Mathematics, just the undergraduate graduation thesis jointly written by the two young people last time, "Excessive Rainfall Caused by Extreme Weather This is one of the problems that puzzled the research team for nearly a month but failed to make a breakthrough, but it was solved by two undergraduate physics students!How embarrassing for them!
What's more, these two students have published three papers on fluid mechanics in national core journals, and no one dares to ignore the achievements they have made in computational fluid mechanics.

Coupled with Jiang Weixian's big backer, even a researcher at the full professor level, he tried his best to smile at the two of them at this time.

Generally speaking, those who engage in scientific research are relatively simpler than those who engage in academics, and the atmosphere is still relatively good. Qin Ke and Ning Qingyun also greeted everyone humbly, without any arrogance, and they also aroused everyone's goodwill. So this welcome meeting was spent happily.

After getting to know each other, the next step is the usual visit.

When they reached the seventh floor, Qin Ke and Ning Qingyun finally understood why the research group was so expensive after seeing the huge scientific and technological climate simulation system that connected the entire floor and listening to Academician Jiang's introduction!

This climate laboratory located on the seventh floor has begun to simulate more than 30 extreme climates, including small hurricane climate with wind speed of 35 meters per second, extreme rain and snow weather, high temperature and hot arid desert climate, etc. Set any temperature between -60°C and 35°C to simulate a snowstorm at minus -[-]°C.

There is not only one climate laboratory here. In other coastal areas, there are also larger marine climate laboratories that can simulate small-scale tsunami scenarios.

There is also a lightning field test base in the south, which can use artificially triggered lightning technology to simultaneously measure and collect sound, light, electricity, and magnetic values ​​​​in lightning with high precision, to strengthen the protection against lightning disasters in extreme weather, and is even studying how to disperse lightning efficiently. Lightning, reduce damage to electrical and electronic facilities and casualties caused by lightning strikes.

In addition, the research group has also maintained a long-term cooperative relationship with Qin Kening, Qingjun, and Professor Duan Yonggong's Fluid-Structure Interaction Mechanics Laboratory.

Moreover, this research group not only does research in the laboratory, but also conducts field investigations all over the country, covering deserts, oceans, peaks, snow-capped mountains, canyons, etc...

So there are only seventy or eighty team members present today, and the rest have gone out for field trips.

"Our current main research method is to divide the predicted area into grids in time and space, and use methods such as finite difference, finite volume, and finite element for data processing. For example, using the semi-Lagrangian semi-implicit format, and then using The spectral method solves the discrete three-dimensional cubic grid in space, which you should have learned in elective courses, so I won’t go into details. In addition, it is to study air turbulence phenomena through the Navier-Stokes equation (NS equation), and Predict, prevent and resolve extreme climate.”

After listening to the introduction, Qin Ke and Ning Qingyun once again had a deeper understanding of the research group they joined. Qin Ke asked thoughtfully: "Mr. Jiang, is the NS equation the main tool? Regarding the NS equation, what is your research progress?" What's the matter?"

He is really interested in knowing how far the top fluid mechanics experts in China have researched the NS equation.

Jiang Weixian nodded and said: "Yes, the NS equation is one of the main tools we currently use. You said before that you want to study the NS equation, so you should know that for fluid mechanics, any meteorological process is the result of the NS equation under specific initial conditions. One solution, but in reality there are many complex interaction factors between physics, chemistry and even the environment involved in meteorology. I want to completely use these factors as the "source term" of the NS equation, and use the thermal process that cooperates with energy conservation to solve it. Predicting exact values ​​for temperature, weather, and rainfall is currently impossible."

He paused, and then said: "Unless the problem of existence and smoothness of the solution of the NS equation can be solved. But this problem is too difficult, and we can only find some solutions under certain circumstances after decades of research. If in the future a genius who is proficient in both mathematics and physics can crack all the solutions of the NS equation and solve the problem of its smoothness, it will be of immeasurable benefit to the future of mankind."

When it came to the end, he looked at Qin Ke and Ning Qingyun with infinite expectations.

In his opinion, these two students, who are far beyond ordinary talents in mathematics, can definitely advance the progress of solving the NS equation as long as they can follow him to study fluid mechanics for ten or eight years.

Come on, Qin Ke, Ning Qingyun, maybe your progress is related to the future survival of mankind.

(End of this chapter)