Both Qin Ke and Ning Qingyun cherished this opportunity to observe and learn in a national key laboratory as an intern.

So far, both of them have only been exposed to theoretical physics. Even if they participated in Lao Hu's oil and gas separation before, they only stayed on paper. But now it is different. This time, Professor Duan's laboratory topic is a typical applied physics category.

, the research results can be directly applied to large-scale engineering projects related to the national economy and people's livelihood.

Only scientific researchers who have entered the research institute have the opportunity to come into contact with such a project. It is difficult for ordinary undergraduate interns, even master's interns, to have such an opportunity.

Therefore, in order to make full use of the real front-line learning opportunities in scientific research, the two of them have been using all their free time to study and research independently on "fluid-solid coupling mechanics", "foundation liquefaction", and "ocean engineering" in the three days before departure.

”, “Breakwater” and other knowledge.

With the incomparable wealth of professional-level physics knowledge in his mind, Qin Ke naturally has a very good understanding of fluid-solid coupling mechanics, but ocean engineering is a complex project involving multiple disciplines. The construction of breakwaters alone involves several aspects of physics.

There are also different disciplines such as chemistry, materials science, civil engineering, architecture, etc. Chemistry and materials science are okay. Qin Ke currently has undergraduate level knowledge, but in the latter engineering, Qin Ke is really

A true novice.

Therefore, in addition to explaining fluid-solid coupling mechanics to Ning Qingyun, he also reviewed a large number of research reports, papers and other literature together to continuously enrich his knowledge.

A top engineering university like Qingmu University has shown its rich heritage at this time. The richness of its information is astonishing. There are even many real cases and accident analysis reports - details that are so detailed that they have never been seen before.

In newspapers and magazines. God knows where the school collected it from.

This is also because the physics department knew that the two of them needed information in this area. After reporting it to the school, the school specially opened the school's electronic library to the two with the highest search authority, allowing them to freely access all literature and materials. Otherwise, there would be nothing they could do.

Saw so much information.

Faced with a vast amount of knowledge, even though Qin Ke's talent in science at this time was almost unparalleled in the world, he only read more than 200 documents in about three days and felt a little dizzy.

But the results gained were also fruitful. At least when he drove to Professor Duan's Fluid-Structure Interaction Mechanics Laboratory, he had basically become an expert in this field - of course, only an expert in theory.

Professor Duan's laboratory is not too far from the school, only a few dozen kilometers away. However, if you really have to drive, you have to take a long detour. It takes about an hour and a half one way. Considering the traffic conditions in the capital, this kind of commuting time is still OK.

Accepted, so the two of them did not let Professor Duan arrange their accommodation, and they commuted from the work assistant's car to the laboratory and the new home of "Xingguang Mingyuan" every day.

Professor Duan Yonggong is quite famous in the field of marine engineering research. His main research directions are marine soil mechanics and fluid-solid-soil coupling mechanics. He is also a doctoral supervisor. He is a big name in the industry. According to old nonsense, Professor Duan will have the opportunity to be elected as an academician this year.

This is even more awesome.

Such a boss is usually very busy with business, so naturally he has no time to personally greet Qin Ke and Ning Qingyun, two newcomers who are not yet well-known in the physics world. However, he still sent an associate researcher to wait at the entrance of the laboratory.

Qin Ke took Ning Qingyun out of the car, and a young man with a high hairline and a slightly fat figure came over. When he saw Ning Qingyun, he was obviously dazzled by the girl's beautiful appearance and temperament, and couldn't help but

Smiling and sighing: "Welcome, Qin Ke, Ning Qingyun, I have heard of your names for a long time, and today I finally meet you in person. Yes, you two are more handsome and beautiful than the video photos on the Internet."

The young man had a familiar personality. He shook hands with Qin Ke and introduced himself: "My name is Qi Zhicong. I am older than you. You can call me Brother Qi or Brother Cong."

Qin Ke also smiled back: "Hello, Brother Qi, I need your guidance and care these days."

"You're welcome. I heard that you are very good at mathematical modeling. Maybe our laboratory will need your advice. Come on, I'll take you around the laboratory first. Professor Duan has something else to do.

After you finish the visit, I will take you to see him."

Qin Ke motioned to Fang Yongtang to drive away first and call him if he needed a car. Then he took Ning Qingyun's little hand and followed Qi Zhicong into the laboratory.

This laboratory is worthy of being a key laboratory under the Xia Ke Academy of Marine Engineering Science and Technology Research Center. It covers an extremely large area and is almost the same size as an ordinary college. It also has a canteen, dormitory building, and sports ground, and the conditions are very good.

good.

Three silver-grey research buildings with unique shapes are connected through a hollow corridor on the second floor. They look like a ring-shaped triangle, which is impressive.

The most striking thing is that this laboratory is built next to a large lake. The most eye-catching thing is a long white lake embankment, divided into different sizes, heights, and shapes, which surrounds half of the vast lake.

"Our laboratory is not the oldest in China in the field of fluid-structure coupling mechanics, but it is definitely the largest and most advanced laboratory. Although it was only established for about fifteen years, it is now used in many ocean engineering and river embankment projects.

Adopting our research results, within ten years we will become a well-deserved top laboratory in the field of fluid-structure coupling mechanics in China."

There was a certain arrogance in Qi Zhicong's words. Being able to work as a researcher in such a high-end key laboratory, with high salary and high social status, is indeed something to be proud of.

Qin Ke glanced at the nameplate he was wearing and smiled: "Brother Qi is already an associate researcher at such a young age? It's really amazing."

Associate researcher is a deputy senior level, which is equivalent to an associate professor in universities.

Qi Zhicong looks to be around 26 or 27 years old, so he is actually very young and promising.

Qi Zhicong was aroused by Qin Ke's words, and he couldn't help but feel even more proud. He also liked this little brother who came to the internship "relying on connections" and said politely: "No, no, I just made a small achievement. Domestic

There are crouching tigers, hidden dragons in many top laboratories in China, and there are quite a few senior researchers of my age.”

Although he is humble on the surface, he actually admits what Qin Ke said. He is the youngest associate researcher in this laboratory.

The effect of Qin Ke's good eloquence is also obvious. Qi Zhicong introduced the laboratory more enthusiastically, and of course he also boasted:

"Look, what we are walking through is the breakwater section labeled 'J-92'. It adopts the latest permeable double-layer plate structure. The frame is made of lightweight alloy. This is also the research result of our laboratory. Its material

It is far superior to steel bars, and the price is only twice that of steel bars. Oh, don't think it is very expensive, you can save on transportation costs. When you arrive at the assembly site, you can pour the concrete components directly, and they can be locked together with locks.

The construction is extremely convenient and can save a lot of construction time. It is especially suitable for soft soil foundations. The foundation liquefaction experiment we are going to do this time is on this breakwater section."

Qin Ke said unexpectedly: "So, the foundation liquefaction experiment is to verify the safety of the 'J-92' breakwater in extreme environments?"

Qi Zhicong was greatly surprised by Qin Ke's acumen: "Yes, you can indeed say that. To tell you the truth, in order to prove the safety of this 'J-92' breakwater, this experiment has been prepared for almost two years, and the total cost has been

It exceeds 300 million. You have come to the right place. Many people will never experience such a huge and real final test experiment in their lifetime."

Ning Qingyun couldn't help but wonder: "With such a high investment, can the cost be recovered?"

Qi Zhicong said with a smile: "Of course, once the experiment is successful, the overall plan of 'J-92' breakwater will be promoted, which may involve a market worth hundreds of billions. It will be used in important domestic flood control sections and offshore section projects.

."

Qin Ke and Ning Qingyun were also a little excited when they heard this. A huge experiment costing three hundred million to do once also involves a market worth hundreds of billions and important projects related to the national economy and people's livelihood. It is really amazing!

It is too rare for Lao Hu to give the two of them a chance to come back!

The two looked at each other and saw the interest and scientific research enthusiasm burning in each other's eyes.

Qi Zhicong led the two of them around for almost forty minutes, which broadened their horizons, and finally moved to one of the experimental buildings.

"Our laboratory has 13 senior researchers, 38 deputy senior associate researchers, and even more assistant researchers and intern researchers. Intern researchers are generally doctoral students and graduate students taught by professors. Professor Duan

He is the person in charge of our place and also a doctoral supervisor, and now he also leads several doctoral students."

Qin Ke and Ning Qingyun waited in a certain office for another ten minutes before meeting Professor Duan Yonggong.

Professor Duan Yonggong is about fifty years old, wearing a researcher's white coat, wearing glasses with thick lenses, his eyes are always narrowed, and he only has short, sparsely combed hair on his head.

According to a joke in the industry, the less hair you have, the greater your knowledge. Professor Duan Yonggong’s level is undoubtedly very high.

"Qin Ke, Ning Qingyun, come and sit down."

Duan Yonggong was the kind of person who did more work than talking, and did not say any pleasantries. He pointed to the sofa in the office and motioned for the two of them to sit down:

"You will follow Xiao Qi for the past five days. There will be an experimental communication meeting in ten minutes, and you will also participate. I know that your level of mathematical modeling is very high, and you will also be responsible for some related work during the internship.

During the internship, you can ask anything you don’t understand. You can ask me, Xiao Qi or others. I have already said hello. As long as it does not involve any part that needs to be kept confidential, I will answer you. The only requirement is,

Don’t touch the experimental equipment without permission, is that okay?”

Professor Duan's capable style was quite appealing to Qin Ke and Ning Qingyun. They both nodded and said, "I understand, Professor Duan."

"Okay." Professor Duan smiled with satisfaction and said to Qi Zhicong: "Xiao Qi, show them the meeting materials so that they can have a preliminary understanding."

The laboratory is divided into many research groups, and it is naturally impossible for Professor Duan to follow every research group. However, the "breakwater foundation liquefaction experiment under wave action" four days later is considered the most important marine soil mechanics experiment in the entire laboratory. Professor Duan

Naturally I will follow up personally.

Qin and Ke only hurriedly flipped through the meeting materials. Ten minutes later, the meeting of the research team began.

Professor Duan first introduced Qin Ke and Ning Qingyun to the more than thirty group members, and then went straight to the topic.

"This experiment is to verify the effectiveness and safety of the J-92 section breakwater under predetermined wave height and water depth conditions based on different wave parameters obtained from our simulation experiments. The values ​​that need to be recorded include transmission coefficient, reflection coefficient,

The clay content of the foundation, the permeability and density changes of the soil..."

Professor Duan's meeting style was just like his speaking style, direct and capable, but perhaps because Qin Ke and Ning Qingyun were newcomers, he added a lot of explanatory content.

According to Professor Duan, the most critical point of this experiment is "foundation liquefaction."

Therefore, foundation liquefaction means that in the original saturated state of the foundation soil, the sand with strong shear strength causes the pore water pressure to rise due to some reasons, and the effective stress between the sand and soil is reduced, thereby weakening the shear strength, and ultimately causing the

The foundation soil has a softening effect and becomes a mud-water mixture in a semi-fluid state or even a completely fluid state.

The harm of foundation liquefaction is very serious, and the bearing capacity of the foundation is greatly reduced. The most direct impact is that the foundation of the upper building fails, causing sinking, sideways or even complete collapse.

Foundation liquefaction is generally caused by external forces, such as long-term penetration and resonance under the action of waves, or severe weather caused by typhoons and huge waves, or more direct and powerful earthquake vibrations.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! The "J-92" breakwater plan is the main verification object of this experiment. By evaluating the foundation's simultaneous impact on the static force of the lake water and the wave load,

Under the action of reciprocating power, after geological liquefaction occurs, the "J-92" breakwater can withstand the degree of foundation liquefaction to verify its safety.

The research team has previously conducted repeated and detailed computer simulation experiments and experimental model tests, and has optimized the "J-92" breakwater plan dozens of times based on this. Now it is a super-large real environment test before it is officially launched on the market.

, they call it a "super-large actual test."

At the end of the meeting, Professor Duan assigned everyone's work.

There are certain risks in this experiment. In order to avoid a safety accident in which the foundation liquefaction exceeds the experimental design value and leads to the collapse of the breakwater, many prerequisite tasks must be fully completed.

For example, Qi Zhicong would lead several assistant researchers to be responsible for the final inspection of large wave machines and wave height meters together with the manufacturer's engineers.

Qin Ke and Ning Qingyun were also assigned work, mainly analyzing data from previous computer simulation experiments.

"The computer simulation experiment is based on a mathematical model. This mathematical model was established and provided by our superior sister unit, the Institute of Mathematics. There should be no problem. But since you two happened to be here, please help verify it.
To be continued...