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Chapter 726: Are you sure you can solve this millennium mathematical problem?

That afternoon, Kuang Songlin, a researcher at the National 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 reception room on the first floor of the Fluid Mechanics Laboratory, Qin Ke and Ning Qingyun met Kuang Songlin.

Said to be a "Young Researcher", the researcher named Kuang Songlin is actually 30 years old, barely on the upper age limit for youth. Moreover, Kuang Songlin has a high hairline and a mature face. He looks like he is in his mid-thirties.

At the age of six.

Kuang Songlin didn't like to talk much. When he saw the world-famous Qin Ke and Ning Qingyun, he just forced out a smile with some restraint and said: "Hello, Professor Qin, Professor Ning", and then shared his research results

Handed it over.

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

"Yes. I am mainly responsible for the study of the El Niño phenomenon in the laboratory." Kuang Songlin became talkative when he mentioned professional issues:

"The La Niña climate phenomenon has continued to occur in the past three years, especially this winter. The sea surface temperature has continued to be abnormally cold. I think the possibility that global temperatures will reappear as an El Niño phenomenon this summer is increasing, and will blow westward along the equator. The winds will slow down, and the warm Pacific tide will push eastward, causing warmer ocean surface temperatures, making summers in the northern hemisphere hotter, and precipitation in most parts of my country may show a significant reduction trend."

Kuang Songlin said this with some excitement: "According to my prediction, the El Niño index may reach around 1.9 in June and July. I made suggestions to the leaders, hoping that the country would pay attention and take countermeasures in advance. But everyone else thought that

I am being 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 30% 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.

level.

Seeing Kuang Songlin struggling with his reasoning, Qin Ke felt a little better: "Dr. Kuang, please sit down first. Professor Ning and I will take a careful look at your report."

Kuang Songlin sat down, and Chen Ya, the work assistant waiting next to him, brought tea.

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

The data is very detailed, and the logic in it is quite clear, showing the extremely high level of Kuangpine Forest in meteorology. However, the problem is also obvious. The most critical part of the data analysis and processing is very rough, making this report lack of sufficient

It is very convincing, especially since the mathematical process to arrive at the final 30% probability is not rigorous.

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

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

It is not surprising that the National Academy of Meteorological Sciences does not adopt such a report.

Kuang Songlin noticed the expressions of Qin Ke and Qin Ke, and when he saw them closing the report without comment, he 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 and can only do very rough mathematical modeling. This result is derived based on a very rough mathematical modeling, but I think

My research direction is right! Through the observation data of the peak area, trough area and sunspot attenuation phase of the 11-year sunspot cycle, I can also predict that a more serious El Niño phenomenon will occur this year!"

"Meteorology is not a science for one person. It is a huge subject that requires teamwork to complete. Dr. Kuang, the skeleton of your report is correct, but you alone cannot fill the flesh and blood inside." Qin Ke gently put this into

Put down the thick stack of reports.

"I know..." Kuang Songlin said with some reluctance: "But there are not enough mathematical modeling experts in the laboratory where I work, and many people just muddle along and don't bother to do research at all..."

Qin Ke pondered for a while and asked: "Do you think there is a relationship between the El Niño phenomenon and ocean currents?"

"It has little to do with it. The evidence is that the El Niño phenomenon is a warming process of the equatorial water in the Pacific Ocean. After the temperature of the water body increases, there is no large ocean current flow."

Qin Ke asked again: "El Niño is a global climate phenomenon, and its operating mechanism is quite complex. Heating such a vast ocean requires a large amount 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 sunspot group that releases a large amount of matter and energy when it is active at high frequencies. In addition, the energy generated by the angular momentum exchange and differential rotation of the blue star's circles will also contribute to the El Niño phenomenon.

." Kuang Songlin continued to answer instantly.

Qin Ke and Ning Qingyun exchanged glances. Qin Ke smiled and asked, "What major is Dr. Kuang studying? Is it meteorology?"

"Yes."

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

Kuang Songlin was stunned: "You want me to come here to work?"

"Yes, we have no shortage of experts in mathematical modeling here, and most of our people here really like to do research and want to make a career. As long as you really like to do research, this place will definitely let you

I feel comfortable." Qin Ke tapped the report on the table with his finger:

"There is no problem with the theoretical logic of your report, but the data involved in it needs to be re-analyzed and processed, and the final result may not be a 30% probability. After you come to our laboratory, we can arrange a suitable

The research team will work with you to improve this report. If the improved report still shows that there is more than a 30% chance of a strong El Niño phenomenon, Professor Ning and I will make serious suggestions to the relevant national departments."

This chapter is not over yet, please click on the next page to continue reading! Qin Ke is currently conducting research on extreme weather phenomena across the country. It is precisely in need of such meteorological experts to join the team. It is rare for Kuang Songlin to "fall into the trap". Qin Ke

How can there be any reason to miss it?

Kuang Songlin thought for a moment, then nodded and said: "Okay."

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

"No more questions. Being able to do research with you and Professor Ning is the dream of countless scientific researchers. If I have such an opportunity, I will naturally not 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 national key laboratory, and ours here is also a national key laboratory, so the salary will only increase.

It will be reduced, you can rest assured about this. You go back and go through the resignation procedures first, and I will arrange for someone to contact you to go through the entry procedures."

Kuang Songlin was surprised when he returned: "Don't you look at my resume and learn about my previous project experience?"

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

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



After sending Kuang Songlin away, Qin Ke asked Ning Qingyun: "Honey, what do you think of this report?"

Ning Qingyun flipped through the report again, shook his head and said: "It's difficult. Judging from the original data, the data are too separated from each other. It is difficult to introduce these data into the n-s equation. To really improve this report, a lot of supplements need to be added."

Data, especially the changes in the orbit of blue stars around the sun and the corresponding changes in the El Niño phenomenon, etc."

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

James Kroll was an Eagle Country scientist in the 19th century, but he is not well-known, and his book "Climate and Time" is not famous either. However, in this book, James Kroll used a lot of rigorous mathematical calculations to propose

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, and the perihelion axis is relatively stable.

The length of the axis is constantly expanding and contracting, causing the revolution orbit to change from an ellipse to a near circle and then to an ellipse. Based on this, he also deduced how glaciers move, how ocean currents are generated, how thick the Antarctic ice cap is, etc.

After the death of James Kroll, the Yugoslav physicist Milutin Milankovitch further clarified the relationship between the irregular changes in the orbit of the blue star and the ice age based on his theory, which is the famous

"Milankovitch Cycle".

What Qin Ke has been studying more recently is the "Milankovitch Cycle", also known as the "Milankovitch Hypothesis", which is an astronomical hypothesis about the origin of the Quaternary Ice Age. Qin Ke feels that this hypothesis is very important for studying this year and three.

The extremely cold winter two years ago has certain reference significance.

Ning Qingyun was a little embarrassed, but also narrowed her eyes with enjoyment, looking like a cat that wanted to be coquettish and slightly arrogant: "Do you think the 'Milankovitch Cycle' is related to the 'El Niño phenomenon'?

"

Qin Ke couldn't help but kiss his wife's smooth and cute face, and then smiled and said: "It should have something to do with it, but the 'Milankovitch Cycle' is still a 'hypothesis' that has not been truly proven. I think this

Many details in the theory are worth debating. It would be great if I had the opportunity to get the original paper and look at it. I always find the translated version a bit weird."

The two of them returned to their offices while talking, and unexpectedly saw old academician Jiang Weixian and old academician Guo Weiyang chatting in front of the door. When they saw the two coming back, Jiang Weixian frowned and said: "Your 'National Abnormal Climate

We have read the detailed research plan of the data analysis research topic and found a serious problem in it, did you not find it?"

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

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

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

This "National Abnormal Climate Data Analysis Research Project" is currently the largest independent project in the entire laboratory that has invested the most manpower and material resources, and the two restless old academicians have naturally spent a lot of time and energy to understand it and carry out the research.

General guidance.

Inviting the two old academicians to sit down on the sofa, Qin Ke made black tea again and placed it in front of the two of them: "Teacher, Academician Guo, you two have a try. Drinking black tea in winter will warm your stomach."

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

Call him "Academician Guo".

Jiang Wei first blew lightly to cool down the tea a little, then took a sip, and then said: "Back to business, Lao Guo and I have thought about the overall research plan and schedule you recently designed in detail.

It is indeed more sophisticated, but it involves a lot of calculations related to n-s equations. Especially to determine the relationship between atmospheric circulation and heat transport across the country, at least thousands of n-s equations with different special solutions are needed to describe it more accurately.

At present, there are only more than a hundred special solutions to the n-s equation 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, and then the entire experiment will have to be suspended and will no longer be able to proceed. Rather than wasting a full half-year's time and energy, it is better to put this aside for the time being.

It’s better to study the topic, or to redesign a more feasible research plan.”

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Qin Ke felt warm when he saw the concerned looks of the two old academicians. He and Ning Qingyun spent nearly a week working on the research plan.

, should be regarded as a highly feasible research plan. If it is successfully implemented, the main causes of these two extremely cold winters can be roughly guessed within a year.

However, this research plan is very complex and profound, and few people in the Fluid Mechanics Laboratory can fully understand it. Academicians Jiang Weixian and Guo Weiyang probably spent a lot of effort to fully understand it.

Qin Ke said sincerely: "Qingjun and I have actually considered this issue when we wrote the research plan."

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

Qin Ke smiled slightly: "The problem you and Teacher Jiang mentioned is ultimately the problem of solving n-s equations. What if these thousand n-s equations that require different special solutions actually have the same general solution?"

"Is there a general solution?" With the state of mind that Jiang had developed over decades of experience, he couldn't help but sit up straight and said in surprise: "Qin Ke, you mean that you have been able to solve the existence of smooth solutions to n-s equations in three-dimensional space.

question?"

As an expert in fluid mechanics, Jiang Weixian certainly 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 complex that its exact solution can only be obtained in some very simple special case flow problems, which greatly limits the application of the n-s equation in fluid mechanics.

Once it can be proved that there is a general solution to the n-s equation and an accurate general solution can be found, it will bring about earth-shaking changes in fluid mechanics.
Chapter completed!
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