I really just want to be a scholar

Chapter 727 Are you sure you can solve this millennium math problem?

That afternoon, Kuang Songlin, a researcher at the State Key Laboratory of Severe Weather under the National Academy of Meteorological Sciences, ran to Qingmu University almost non-stop after receiving the notice.

In the living room on the first floor of the fluid mechanics laboratory, Qin Ke and Ning Qingyun met Kuang Songlin.

It is said to be a "young researcher", but in fact this researcher named Kuang Songlin is 30 years old, barely stepping on the upper age limit of youth, and Kuang Songlin has a high hairline and a mature face, he looks like 35 or [-] years old age.

Kuang Songlin didn't like to talk very much. When he saw Qin Ke and Ning Qingyun, who were famous all over the world, he just squeezed out a cautious smile and said, "Hello, Professor Qin, and Professor Ning", and then shared his research results. Handed over.

Qin Ke took over the 10cm-thick research report and asked, "Dr. Kuang, did you complete this all by yourself?"

"Yes. I am mainly responsible for the research of El Niño phenomenon in the laboratory." Kuang Songlin became talkative when he mentioned professional issues:
"The La Niña climate phenomenon has continued to appear in the past three years, especially this winter, and the sea surface temperature has continued to be abnormally cold. I think the possibility that the global temperature will reappear the El Niño phenomenon this summer is increasing, and it will blow westward along the equator. Winds will slow down, warmer Pacific tides will push eastward, causing warmer sea surface temperatures, making summers hotter in the northern hemisphere, and much of our country will likely see a significant reduction in precipitation."

When Kuang Songlin said this, his tone was a little excited: "According to my prediction, the El Nino index may reach about 1.9 in June and July. I made suggestions to the leaders, hoping that the country will pay attention to it and take countermeasures in advance. But others think I am alarmist. Yes, the probability of about 30% is indeed not high, but I remember Professor Qin once said that in the face of large-scale meteorological disasters, the probability of [-]% is already very high!"

The El Niño index is mainly released by the World Meteorological Organization. It is divided into five categories: 0≤ONI≤0.5 normal, 0.6≤ONI≤0.9 weak, 1≤ONI≤1.4 moderate, 1.5≤ONI≤1.9 strong, 2≤ONI very strong. levels.

Seeing Kuang Songlin fighting for reason, Qin Ke felt a little better: "Dr. Kuang, please sit down first. Professor Ning and I must carefully read your report."

Kuang Songlin sat down, and the assistant Chen Ya who was waiting beside him brought tea.

Qin Ke and Ning Qingyun sat together and read the thick report written by Kuang Songlin.

The data is very detailed, and the logic inside is quite clear, which shows that Kuang Songlin has a very high level in meteorology, but the problem is also obvious. The most critical part of the data analysis and processing is very rough, which makes this report lack sufficient information. The convincing power, especially the mathematical process of obtaining the final 30% probability is not rigorous.

It can be seen that Kuang Songlin is really good at observing data through experimental equipment and has a keen meteorological intuition, but his level of mathematics is not high, not much better than ordinary undergraduates.

Moreover, Kuang Songlin is not good at fluid mechanics, and only very basic fluid mechanics formulas are quoted in it.

It is not surprising that such a report is not adopted by the National Academy of Meteorological Sciences.

Kuang Songlin noticed the expressions of Qin and Ke, saw that both of them closed the report noncommittally, and immediately lowered his head in disappointment, but the next moment, he gritted his teeth and insisted:
"I know that I am not good at data analysis and processing, because I am not good at data, only rough mathematical modeling, this result is derived based on a very rough mathematical modeling, but I think My research direction is right! I can also speculate that there will be a more serious El Niño phenomenon this year through the observation data of the peak area, valley area, and sunspot decay phase of the 11-year sunspot cycle!"

"Meteorology is not a science for one person, it is a huge subject that requires teamwork to complete. The skeleton of Dr. Kuang's report is correct, but you can't fill it with flesh and blood alone." Qin Ke gently said this Put down the thick report.

"I know..." Kuang Songlin said a little unwillingly: "But there are not enough mathematical modeling experts in the laboratory where I work, and many people just muddle through and don't devote themselves to research at all..."

Qin Keluo pondered for a moment and asked, "Do you think El Niño phenomenon has anything to do with ocean currents?"

"It doesn't matter much. The evidence is that the El Niño phenomenon is a warming process of the equatorial water body in the Pacific Ocean. After the water body temperature rises, there is no large ocean current flow."

Qin Ke asked again: "El Niño is a global climate phenomenon, and its operation mechanism is quite complicated. Heating such a vast ocean requires a lot of energy. Where do you think this energy comes from?"

"One is the equatorial ring current of the blue star's magnetic field, and the other is the release of a large amount of matter and huge energy when the sunspot group is active at high frequency. In addition, the energy generated by the angular momentum exchange and differential rotation of the blue star's circle will also boost the El Niño phenomenon. .” Kuang Songlin continued to answer in seconds.

Qin Ke and Ning Qingyun exchanged glances, and Qin Ke asked with a smile, "What is Dr. Kuang's major? Meteorology?"

"Yes."

"Then are you interested in working in our Fluid Mechanics Laboratory at Kiyoki University?"

Kuang Songlin was stunned: "Do you want me to work here?"

"Yes, we have no shortage of experts in mathematical modeling here, and most of us here really like to do research and want to achieve a career. As long as you really like to do research, here will definitely let you I feel comfortable." Qin Ke pointed to the report on the table with his fingers:
"There is no problem with the theoretical logic of your report, but the data involved in it needs to be re-analyzed, and the final result may not be a 30% probability. After you come to our laboratory, we can arrange appropriate Our research team will cooperate with you to improve this report, if the improved report still shows that there is more than [-]% probability of a strong El Niño phenomenon, Professor Ning and I will make serious suggestions to the relevant national departments.”

Qin Ke is currently conducting research on extreme weather phenomena across the country. It is precisely this kind of meteorological experts who are needed to join the team.
Kuang Songlin thought for a while, then nodded and said, "Okay."

Qin Ke was surprised: "Don't ask about salary and benefits?"

"Don't ask, it's the dream of countless researchers to do research with you and Professor Ning. I have such an opportunity, so I won't miss it," Kuang Songlin said seriously.

This Kuang Songlin will seize the opportunity decisively.Qin Ke nodded secretly, and said: "Thank you for your trust. Your original laboratory is a state key laboratory, and ours is also a state key laboratory here, so you can rest assured that the salary will only increase and not decrease. You Go back and go through the resignation procedures first, and I will arrange someone to contact you to go through the entry procedures."

This time Kuang Songlin was surprised: "Don't you read my resume and find out about my previous project experience?"

Qin Ke smiled and said, "No need, your report and your answer just now are enough to show your strength."

Kuang Songlin stretched out his hand and shook Qin Ke vigorously: "I will do my best to prevent you from regretting today's decision."

……

After seeing off Kuang Songlin, Qin Ke asked Ning Qingyun, "Honey, what do you think of this report?"

Ning Qingjun flipped through the report again, shook his head and said, "Difficult, from the point of view of the original data, the degree of fragmentation between the data is too high, and it is difficult to introduce these data into the NS equation. To really improve this report, we need to add a lot of data, especially the orbital changes of the blue star's motion around the sun and the corresponding changes in the El Niño phenomenon."

Qin Ke rubbed Ning Qingyun's silky and black hair approvingly, and said with a smile: "Yes, I can see the key problem. James Kroll's "Climate and Time" recommended by you recently is not in vain."

James Kroll was a scientist in Eagle Country in the 19th century, but he was not well-known, and his "Climate and Time" was not well-known, but in this book, James Kroll proposed with a lot of rigorous mathematical calculations Regarding the eccentricity theory of the blue star ice age, it is believed that the orbit of the blue star around the sun is elliptical. If the long axis of the elliptical orbit is regarded as the aphelion axis, and the short axis is regarded as the perihelion axis, then the aphelion axis is relatively stable, while the perihelion axis is relatively stable. The length of the axis has been expanding and contracting, causing the revolution orbit to change from an ellipse to a nearly circle and then to an ellipse. He also deduced how glaciers move, how ocean currents are generated, and how thick the Antarctic ice sheet is.

After the death of James Kroll, the Yugoslavian physicist Milutin Milankovich further clarified the relationship between the irregular changes in the orbit of blue stars and the ice age on the basis of his theory, which is the famous " Milankovitch cycle".

What Qin Ke has studied more recently is this "Milankovitch cycle", that is, the "Milankovitch hypothesis", which is an astronomical hypothesis about the cause of the Quaternary ice age. The extremely cold winter years ago has certain reference significance.

Ning Qingjun was a little embarrassed, but also narrowed her eyes with some enjoyment, she looked like a cat who wanted to be coquettish and a little arrogant: "Do you think the 'Milankovitch cycle' is related to the 'El Nino phenomenon'? "

Qin Ke couldn't help but kissed his wife's smooth, jade-like, pretty and lovely face, and then said with a smile: "There should be something to do with it, but the 'Milankovitch Cycle' is still a 'hypothesis' that hasn't been proven yet, I think this Many details in the theory are debatable. It would be great if you have the opportunity to get the original paper to read, but the translated version always feels a bit weird.”

The two of them returned to their office while talking, and unexpectedly saw the old academician Jiang Weixian and the old academician Guo Weiyang chatting in front of the door. Seeing the two came back, Jiang Weixian frowned and said: "Your 'National Abnormal Climate After reading the detailed research plan of the research topic of data analysis, we found a serious problem in it, did you not find it?"

Qin Ke probably guessed what Teacher Jiang Weixian was referring to, so he was not in a hurry to explain, but just smiled and said: "Teacher, Academician Guo, you two come in first, let's sit down and talk."

He opened the door of the office and invited two old academicians in.

Now Jiang Weixian and Guo Weiyang will basically no longer participate in front-line scientific research work, but they still have the status of consultants, guiding important topics in the fluid mechanics laboratory.

This "National Abnormal Climate Data Analysis Research Project" is currently the largest independent project that has invested the most manpower and material resources in the entire laboratory. The two old academicians who can't stay idle naturally spent a lot of time and effort to understand and conduct research. total guidance.

Ask the two old academicians to sit down on the sofa, Qin Ke brewed black tea again, and put it in front of them: "Teacher, Academician Guo, you two have a try, drinking black tea in winter is just right to warm your stomach."

In fact, Guo Weiyang can be regarded as half of Qin Ke and Ning Qingyun's teacher, but Academician Guo Weiyang insists that "a gentleman should not take what others like" and refuses to let Qin Ke and Ning Qingyun call him a "teacher", so Qin Ke and Ning Qingyun always Call him "Academician Guo".

Jiang Wei first blew lightly to cool down the temperature of the tea, then took a sip, and then said: "Speaking of business, Lao Guo and I have carefully considered the overall research plan and schedule that you have recently designed. It is indeed quite subtle, but it involves a lot of calculations related to NS equations, especially to determine the relationship between atmospheric circulation and heat transport across the country, at least thousands of NS equations with different special solutions can be described more accurately. At present, there are only more than 100 special solutions of NS equations published in the world, which is an impossible task.”

Academician Guo Weiyang also worried: "According to your schedule, this step will be reached around June this year. At that time, the whole experiment will have to be interrupted, and it will not be able to proceed any further. Instead of wasting half a year's time and energy, it is better to let go of this for the time being." It is better to study the topic, or to formulate a more feasible research plan."

Seeing the concerned expressions of the two old academicians, Qin Ke felt warm in his heart. The research plan was worked out by him and Ning Qingyun for nearly a week. It should be regarded as a more feasible research plan. If it is implemented smoothly, Within a year, the main causes of these two extremely cold winters can be roughly guessed.

However, this research plan is very complicated and profound, and few people in the fluid mechanics laboratory can understand it all. Jiang Weixian and Academician Guo Weiyang probably spent a lot of effort to understand it completely.

Qin Ke said sincerely: "Qingyun and I have actually considered this issue when we were writing the research plan."

Academician Guo Weiyang couldn't help but said: "You already know that there will be such an unsolvable obstacle, and you still consider this research plan?"

Qin Ke smiled slightly: "The problem you and Mr. Jiang mentioned is, in the final analysis, the problem of solving NS equations. What if these thousand NS equations that require different special solutions actually have the same general solution?"

"Existence of a general solution?" With the state of mind that Jiang has experienced for decades, he couldn't help sitting upright, and said in surprise: "Qin Ke, you mean that you have been able to solve the existence of smooth solutions to the NS equations in three-dimensional space question?"

Jiang Weixian, as a great expert in fluid mechanics, of course knows this famous millennium mathematical problem.

It can be said that it is precisely because the solution of this nonlinear partial differential equation is very difficult and complicated that its exact solution can only be obtained in some very simple special cases of flow problems, which greatly limits the application of NS equations in fluid mechanics. Once it can be proved that there is a general solution to the NS equation and an accurate general solution can be found, it will bring about a major change in fluid mechanics.

Many unsolvable fluid mechanics problems will be solved easily!

　Continue to ask for monthly ticket recommendation tickets!
　　
　
(End of this chapter)