On the evening of the third day of the Qingming holiday, the spring rain was still pouring down, and the mountains and fields were surrounded by hazy rain and fog, and even the air was filled with moisture.

When Qin Ke pulled Ning Qingyun towards the conference room, he saw the drizzle outside the window and a question flashed in his mind. Will rainy days affect the experimental results? But he soon wanted to laugh. Of course it would.

, it’s just a matter of more or less.

The biggest impact of this kind of drizzle with a gentle breeze on experiments is that it requires frontline researchers to hold more umbrellas or wear more raincoats.

After entering the conference room, Qin Ke had converged all his divergent thoughts and returned his mind to this important experiment.

Facing the eyes of all the scientific researchers involved in this topic, including Professor Duan, Qin Ke calmly began to make a report:

"The level of the mathematical model provided by the Institute of Mathematics is still very high, and no problems have been found in the key links. However, because it is a teamwork, the members participating in the mathematical modeling have different levels, and some members do not have a deep enough understanding of physics. For

We did not read the labels provided by the laboratory carefully, which resulted in a total of eleven minor errors, including the over-limit high water level problem that we reported to Professor Lan from the Institute of Mathematics this morning..."

Qin Ke talked for about ten minutes, while Ning Qingyun played the PPT beside him.

The PPT is illustrated with pictures and text, and is taken from the experimental data, so that the details of the model errors mentioned by Qin Ke can be clearly seen.

Finally, Qin Ke looked up at the people in the conference room headed by Professor Duan and concluded:

"...The above is the preliminary assessment made by Qingjun and I after studying the information sent by the Institute of Mathematics. Because our understanding of this super large-scale actual measurement is not as good as that of our predecessors, we dare not draw conclusions on our own.

Please evaluate the risks of this ultra-large actual test and whether to continue the experiment as scheduled."

Professor Duan nodded approvingly and said to everyone: "The next is five minutes of free discussion time."

The conference room soon fell into a buzzing sound.

Professor Duan himself also picked up the plan and thought over and over about the details he just marked.

Five minutes later, Professor Duan closed the table and said, "Each of you should express your opinion."

The order of speeches is clockwise according to the seat. Qi Zhicong spoke first. He opened his notebook and said:

"The report just now by Qin Ke and Ning Qingyun is very detailed. The mathematical model errors they discovered basically only have a great impact on the experiment under extreme conditions. For example, we used the 'arc plate type' in some structures

'Through the air', its transmission coefficient has a specific numerical relationship with the relative wave height and the incident wave period. Due to errors in the mathematical model, the current construction method has the risk of structural tilt, but it will only occur when the wave height exceeds the limit value 1.2 set by our experiment.

It will only appear twice as long.”

Qi Zhicong cited a few more examples and finally said: "The preliminary preparations for this super large-scale actual test are very sufficient, and sufficient emergency preparedness has been done. I think it can continue to be implemented."

The remaining thirty or so scientific researchers also spoke in turn, and most of them said that the experiment should proceed as scheduled.

The scientific researchers present all know that the pressure in the Fluid-Structure Interaction Mechanics Laboratory is quite high now. The deadline for the above-mentioned project to produce results is this year, so they are extremely concerned about this very large-scale actual measurement. Tomorrow, the Xia Academy of Sciences, including Vice President Wen

Several heavyweights, including Academician Yuanping, will come to inspect it in person.

In such a critical period when "everything is ready and all we need is the east wind", how can this super large-scale actual test be rescheduled if we want?

If it is rescheduled as a last resort, it will greatly affect the credibility and prestige of the Fluid-Structure Interaction Mechanics Laboratory, and it will also affect the next full-year plan for this topic.

Because June and July are the flood season and the period of high incidence of typhoons, if this experiment cannot be held as scheduled, it will affect the development of subsequent pilot projects. This best opportunity for pilot testing will be missed, and it will be delayed for another year.

.Many flood-prone areas that have been looking forward to adopting the "J-92 breakwater" plan will be disappointed, and will even have to implement other inferior plans.

Various pressures and reasons made everyone present prefer to continue to conduct this super large-scale actual test as scheduled.

Professor Duan listened carefully to the opinions of all the scientific researchers, and thought about it for a long time before he raised his head, faced the expectant eyes of everyone, and made a decision.

"Tomorrow's super large-scale actual measurement will be carried out on time as originally planned. However, the values ​​of the limit high level and the maximum wave height will be lowered by 10% to avoid accidents. In addition, everyone will work overtime tonight to rehearse the emergency preparedness to ensure that tomorrow

Even if the worst outcome occurs, there must not be any casualties!"

Everyone agreed in unison, their expressions relaxed.

As long as there are no problems with the key links, they are 99% confident that they can win this experiment.

After all, this super large-scale actual measurement has been prepared for two years, and has been repeatedly demonstrated both theoretically and experimentally. The reason why the 11 problems pointed out by Qin Ke this time have not been discovered is that except for the problems with the mathematical model, everyone is not aware of it.

In addition to being familiar with it, it is also because the conditions required for the emergence of these problems are not included in the implementation plan of the ultra-large actual test. As long as the implementation plan is strictly implemented, these errors will not have a negative impact on the experiment itself.

As for revising the details of the "J-92 Breakwater" based on these 11 issues, that can be done after this experiment.

After the meeting, Professor Duan stopped Qin Ke and Ning Qingyun: "Do you have any objections to the experiment proceeding as scheduled?"

Qin Ke thought for a moment and said, "I've seen the emergency preparedness plan. It shouldn't be a big problem."

Ning Qingyun replied with a hint of worry: "I checked the weather forecast. There may be heavy rain tomorrow, which may have a certain impact on the experiment."

"We have made predictions about the weather problem at the beginning. We only need to control the power of the wave system according to the intensity of wind and rain. The risk is very small." Professor Duan was very satisfied with the performance of the two people. He said with a smile: "This of yours

A lot of care and caution are very necessary for experiments.”

This chapter is not finished yet, please click on the next page to continue reading the exciting content! As he spoke, there was more emotion in his tone:

"When I was young, I always thought, isn't it necessary to verify the theory through experiments? If we know that it can be 100% successful, is there any need to experiment? And the failure of experiments may also be the beginning of discovery. But

Now that I am getting older and have done more and more experiments, I think that only by trying every means to increase the probability of success of the experiment and making contingency plans for the worst results can we conduct experiments, especially when there may be personnel

Experiments involving casualties do not allow even half a chance of trial and error."

He looked at Qin Ke and Ning Qingyun and said seriously: "You two are the disciples of Academician Jiang Lao. The experimental projects you will participate in in the future may be more far-reaching and risky than tomorrow's large-scale actual test. What I just said

I hope these little experiences will be useful to you.”

Both Qin Ke and Ning Qingyun could feel the high expectations in Professor Duan Yonggong's words, and solemnly said: "Thank you, Professor Duan, for your teaching."

…

The various preparations for the super-large actual measurement were carried out in an orderly manner while the scientific researchers were busy. Until 12 noon the next day, everything was ready.

The only surprise was that the original factory engineer who had been in charge of the large wave generator was injured in a car accident and was sent to the hospital. The original factory had to urgently transfer an engineer from elsewhere. This engineer was not available until 2 p.m.

I arrived at fifteen minutes just before the experiment was about to start.

However, the operation of large-scale wave generators is the responsibility of the laboratory's scientific researchers. The original engineers are just a guarantee to quickly handle any problems with the equipment. This small accident will naturally not affect the large-scale actual measurement.

start.

At 2:30 pm, the super-large actual test was carried out as scheduled.

The super-large actual measurement was carried out in a certain U-shaped section of the large lake. This area of ​​water is a bit like a narrow-mouthed flask. The bottom of the bottle is the "J-92 breakwater", and several large wavemakers are deployed at the mouth of the bottle.

Together with resonators, communication modules, control modules and other equipment, they form a wave-making system to create a real environment with strong winds and high waves as much as possible.

In addition, there are countless detectors in the entire water area, and sensors up and down inside and outside the breakwater. They monitor in detail and record the pressure frequency of the waves, the degree of foundation liquefaction, and "J

-92 Breakwater" status, etc.

These are the most precious experimental data. After the experiment, these data will be used to evaluate the effectiveness and safety of the "J-92 Breakwater".

The ultra-large measured wave parameters were gradually improved and were very safe at the beginning, so Professor Duan felt confident and allowed VIPs such as Academician Wen Yuanping, Vice President of the Xia Ke Academy, to visit the site.

Five minutes before the experiment officially started, Academician Wen Yuanping and a group of six others, accompanied by Professor Duan, set foot on the "J-92 Breakwater". They were accompanied by several other high-level researchers in the laboratory.

Qi Zhicong, associate researcher, and several scientific researchers from the research team also accompanied him.

Qin Ke and Ning Qingyun were not qualified to show up as interns, but when Academician Wen Yuanping of Xia Ke Academy heard that the two were interning here, he warmly and cordially called them over to meet.

After a brief greeting, Academician Wen Yuanping smiled and said: "Your Uncle Yang and I are also acquaintances. I often hear him mention you, and I thought I would have a chance to meet you. I didn't expect to meet you today. You don't need to call me anymore."

I’m an academician, so just call me Uncle Wen.”

The elder's words were different and made people feel refreshed. He asked the two of them carefully about the situation of this large-scale actual test. Seeing that they also knew a lot, he felt even more satisfied: "You two stay with me and we will work together."

Watch this extremely rare experimental scene up close. This will be very helpful in broadening your future scientific research horizons."

So Qin Ke and Ning Qingyun boarded the J-92 breakwater together.

The two of them stood among the crowd, with a dam more than twenty meters high beneath their feet, and looking up they could see the sparkling waters.

The magnificent project and the vast water area would have made people feel comfortable, but at this time the continuous spring rain had stopped and the air was still a bit dull, especially with the large dark clouds in the distance. It seemed that it was likely to rain during the experiment.

Qin Ke always had a vague feeling of unrest in his heart.

At this time, a rumbling sound began to be heard from the other end of the water.

"It's begun." Ning Qingyun subconsciously squeezed Qin Ke's big hand and whispered nervously and excitedly.

Qin Ke looked around and saw white lines visible to the naked eye in the distance rushing toward the breakwater. In just a few breaths, he saw white waves more than two meters high and getting closer and closer.

The rolling whitecaps and roaring sound are like thousands of horses galloping, making people feel insignificant.

"Boom——!" The huge waves hit the embankment hard and turned into countless foam and water spray, and then retreated reluctantly.

Everyone felt a slight vibration on the ground.

This spectacular scene made everyone feel so excited and proud that human power can conquer the heavens.

Everyone watched the dike scene on the front line for several minutes. The tide was still rushing against the dike. The waves were getting higher and higher, reaching more than three and a half meters. Professor Duan then asked everyone to return to the laboratory and monitor the water through the monitoring equipment.

Observe the entire experimental process.

As soon as everyone stepped off the breakwater, there was suddenly a deafening thunder in the distance, and ferocious lightning flashed across the sky.

Everyone was startled, and then they realized that the sky in the distance was getting darker and darker. The endless dark clouds had blocked half of the sky before they knew it, and were pressing darkly towards them. The wind also became violent.

Heavy rain is coming!

Ning Qingyun was so frightened by the giant lightning that her heart was beating fast, and she hugged Qin Ke's arm tightly.

Professor Duan hurriedly urged everyone to speed up, and said that such weather has been predicted, and the power of the wave-making system will be appropriately reduced at that time. With the help of nature, this actual measurement can be closer to the real harsh environment.
To be continued...