I really just want to be a scholar

Chapter 461 An Experimental Accident?An imminent crisis!
On the evening of the third day of the Ching Ming holiday, the spring rain was still falling, and the mountains and plains were surrounded by hazy rain and fog, and even the air was humid.

Qin Ke took Ning Qingyun to the meeting room together. When he saw the drizzle outside the window, a question flashed through his mind. Will rainy days affect the experimental results?But soon I wanted to laugh a little bit. Of course there was an influence, but it was more or less a problem.

Such a drizzle with a breeze should have the biggest impact on the experiment, and it should make the front-line scientific researchers have more umbrellas or more raincoats.

After walking into the meeting room, Qin Ke had restrained all his divergent thoughts and turned his mind back to this important experiment.

Facing the eyes of all the scientific researchers involved in this project, including Professor Duan, Qin Ke calmly began to 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, but because it is a teamwork, the members involved in the mathematical modeling are of different levels, and some members do not have a deep understanding of physics. The labels provided by the laboratory were not carefully read, which resulted in a total of [-] small errors, including the problem of exceeding the limit and high water level that we have fed back to Professor Lan at the Institute of Mathematics this morning..."

Qin Ke spoke for about 10 minutes, and Ning Qingyun played the PPT beside him.

The PPT is full of pictures and texts, which are intercepted from the experimental data, so that the details of the model errors mentioned by Qin Ke can be seen at a glance.

Finally, Qin Ke looked up at the people in the conference room headed by Professor Duan, and concluded:
"...The above is the preliminary evaluation made by Qingyun and I after studying the materials sent by the Institute of Mathematics. Because our understanding of this super-large-scale actual measurement is not as good as that of the seniors, we dare not draw conclusions. Please evaluate the risks of this super-large actual test and whether to continue the experiment as scheduled."

Professor Duan nodded approvingly, and said to everyone: "Next is 5 minutes of free discussion time."

The meeting room soon fell into a buzzing sound.

Professor Duan himself picked up the plan and thought over the details that were marked just now.

After 5 minutes, Professor Duan closed the plan and said, "Everyone express their opinions."

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

"Qin Ke and Ning Qingyun's report just now is very detailed. The errors in the mathematical model they found basically have a greater impact on the experiment under extreme conditions. For example, we used the 'arc-plate type' in some structures. Through the air', its transmission coefficient is related to the relative wave height and the incident wave period. Due to the error of the mathematical model, the current construction method has the risk of structural inclination, but it will only be when the wave height exceeds 1.2 times the limit value set by our experiment. may appear."

Qi Zhicong gave a few more examples, and finally said: "The preliminary preparations for this super-large-scale actual measurement are very sufficient, and the contingency plan has also been fully prepared. I think it can continue to be implemented."

The other [-] or so scientific researchers also spoke in turn, and most of them said that the experiment should be carried out as scheduled.

The researchers present all knew in their hearts that the fluid-solid interaction mechanics laboratory is under a lot of pressure now, and the deadline for the subject given by the above is this year, so they are very concerned about this super-large-scale actual measurement. Several heavyweights including Academician Yuanping will come to inspect in person.

In such a critical period of "everything is ready, only the east wind is owed", how can this super-large-scale actual measurement be rescheduled if you want to reschedule?
If it is unavoidable to reschedule, it will greatly damage the reputation and prestige of the Fluid-Structure Interaction Mechanics Laboratory, and it will also affect the next year's plan of this subject.

Because June and July are the flood season, and it is also a period of high incidence of typhoons. If this experiment cannot be held as scheduled, it will affect the follow-up pilot project. I missed the best time for the pilot test, and I am afraid it will be delayed for another year. .Many flood-prone areas that had hoped to adopt the "J-92 Breakwater" plan will be disappointed, and will even have to resort to other inferior plans.

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

Professor Duan listened carefully to the opinions of all the scientific researchers, and after pondering over and over for a long time, he raised his head, met everyone's expectant eyes, and made a decision.

"Tomorrow's super-large actual measurement will be carried out on time as originally planned, but the height limit level and the highest wave height values ​​will be lowered by 10% to avoid accidents. In addition, everyone will work overtime tonight and rehearse the emergency plan to ensure that even tomorrow In the worst case, there can be no casualties!"

Everyone responded in unison, and their expressions relaxed.

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

After all, this super-large-scale actual measurement has been prepared for two years, and it has been repeatedly demonstrated both theoretically and from the experimental model. The reason why the 11 problems pointed out by Qin Ke this time have not been discovered, except for the problem of the mathematical model. In addition to familiarity, it is also because the conditions required for these problems to occur are not included in the implementation plan of the super-large-scale actual measurement. As long as the implementation plan is strictly implemented, these errors will not cause adverse effects on the experiment itself.

As for the correction of the details of the "J-11 Breakwater" based on these 92 questions, it can be done after this experiment.

After the meeting ended, Professor Duan stopped Qin Ke and Ning Qingyun: "Do you have any comments on the experiment going on as scheduled?"

Qin Ke thought for a while and said, "I've read the emergency plan, and it shouldn't be a big problem."

Ning Qingyun replied with a little worry: "I read the weather forecast, there may be heavy rain tomorrow, and I'm afraid it will have a certain impact on the experiment."

"We have estimated the weather problem at the beginning, as long as the power of the wave-making system is controlled according to the size of the wind and rain, the risk is very small." Professor Duan was very satisfied with the performance of the two. Care and prudence are very necessary for experiments."

As he spoke, there was a lot of emotion in his tone:

"When I was young, I always thought, isn't experimentation just to verify the theory through experiments? If you know that it can be 100% successful, is there still a need for experiments? And the failure of experiments may also become the beginning of new discoveries. But now that I am getting older and have done more and more experiments, I think that experiments can only be carried out by trying to improve the probability of success of the experiment and making emergency plans for the worst results, especially if there may be personnel In the experiment of casualties, there is no chance of half a trial and error."

He looked at Qin Ke and Ning Qingyun, and said earnestly: "You two are disciples of Academician Jiang, and the experimental subjects you will participate in in the future may have far-reaching impacts and higher risks than tomorrow's large-scale actual measurement. 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 said solemnly, "Thank you, Professor Duan, for your teaching."

……

The preparations for the super-large-scale measurement were carried out in an orderly manner amidst the busyness of the researchers, and everything was ready until 12:[-] noon the next day.

The only accident was that the engineer of the original factory who had been in charge of the maintenance of the large wave generator was injured in a car accident on the way and was sent to the hospital. The original factory had to urgently transfer an engineer from elsewhere. It was [-]:[-], just before the experiment started.

However, the operation of the large-scale wave generator is in the charge of the scientific research personnel in the laboratory. The original engineer is just a guarantee force that can quickly deal with any problems with the equipment. Naturally, this small accident will not affect the large-scale actual measurement. start.

At 2:30 p.m., the super-large field test was carried out as scheduled.

The super-large actual measurement is in a U-shaped section of a large lake. This water area is a bit like a narrow-mouthed flask. Together with the vibrator, communication module, control module and other equipment to form a wave-making system, create a real environment with high winds and high waves as much as possible.

In addition, there are countless detectors in the entire water area, and there are countless sensors up and down inside and outside the breakwater, which monitor and record the frequency of wave pressure in detail, as well as the degree of liquefaction of the foundation, and the "J -92 Breakwater "status, etc.

These are the most precious experimental data. After the experiment is over, it is to rely on these data to evaluate the wave dissipation effect and safety of the "J-92 Breakwater".

The super-large-scale measured wave parameters are gradually improved, and it was very safe at the beginning, so Professor Duan also relievedly let the vice president of the Xia Ke Academy, Academician Wen Yuanping and other distinguished guests visit the site.

Five minutes before the official start of the experiment, Academician Wen Yuanping and a group of six, accompanied by Professor Duan, set foot on the "J-5 Breakwater".Accompanied by several other high-level researchers in the laboratory, associate researcher Qi Zhicong and several researchers in the research group also accompanied him.

Qin Ke and Ning Qingyun's intern identities were originally not eligible to show up, but academician Wen Yuanping of the Xia Ke Academy heard that they were interns here, so he warmly and kindly called them over to meet.

After the simple greetings, Academician Wen Yuanping smiled and said: "Your Uncle Yang and I are also acquaintances. I often hear him mention you, and I still want to have the opportunity to meet you. I didn't expect to meet you today. You don't have to Call me Academician Wen, just Uncle Wen."

The boss spoke differently, making people feel refreshed. He asked the two of them about the situation of this large-scale measurement in a thoughtful manner. Seeing that the two of them knew a lot, he was more satisfied: "You two are with me, and we are close together. Watching this extremely rare experimental scene. It will be very helpful to broaden your future research horizons."

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

The two stood among the crowd, with a dike more than [-] meters high under their feet, looking up at the sparkling waters.

The magnificent project and the vast waters would have made people feel at ease, but at this time the continuous spring rain has stopped, and the air is still a bit dull, especially with large dark clouds in the distance. It seems that it is very likely to rain during the experiment.

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

Then there was a booming sound from the other end of the water.

"It's started." Ning Qingyun subconsciously clenched Qin Ke's big hand, and whispered nervously and excitedly.

Qin Ke looked far away, and saw white lines visible to the naked eye rushing towards the breakwater in the distance, but within a few breaths, he saw white waves more than two meters high, getting closer and closer.

The white waves are rolling, and the roar is like a galloping horse, which makes people feel that they are very small.

"Boom—!" The huge waves slammed into the embankment, turning into countless white foam and splashes, and then retreated unwillingly.

Everyone faintly felt a very slight vibration on the ground.

This spectacular scene made everyone feel a surge of excitement and pride that manpower surpasses heaven.

Everyone watched the scene of the embankment on the front line for a few minutes. The tide was still rushing to wash away the embankment. Observe the whole experiment process.

Just as everyone walked down the breakwater, there was a deafening thunder in the distance, and ferocious lightning flashed across the sky.

Everyone was startled, only to find that the sky in the distance was getting darker and darker, and the endless dark cloud had blocked half of the sky at some point, and was pressing darkly towards this side, and the wind became violent.

Heavy rain is coming!

Ning Qingyun was so frightened by the giant lightning just now that her heart was pounding, she hurriedly hugged Qin Ke's arm tightly.

Professor Duan hurriedly urged everyone to speed up, and said that such weather is already in the plan, 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.

As soon as everyone returned to the laboratory, the rain curtain caught up in the same instant, and the hair and clothes of the two scientific researchers who walked the slowest were wet.

In a blink of an eye, the outside was covered by wind and rain, and the raindrops crackled on the glass. Everyone came to the experimental monitoring center to watch the situation on the water area through the big screen.

But seeing countless silver rain lines falling from the sky, hitting the water surface, splashing countless misty sprays, and the dark clouds making the world dark, the embankment camera automatically switched to the infrared mode, and the picture also turned gray. It has become more urgent and fierce, and the wind pressure, wave pressure, wind force, wave height, wave speed and other values ​​displayed in the detection system are also constantly increasing.

Professor Duan could no longer attend to the explanation at this time, and asked several other researchers to greet the leaders and distinguished guests of the Academy of Sciences, including Academician Wen Yuanping, and he directed all the scientific researchers participating in the experiment to perform their duties, and maintained the communication through wireless communication. Liaise with liaison officers everywhere and issue orders.

But on the whole, this super-large-scale measurement is undoubtedly successful. Under the repeated action of strong winds and waves, the foundation began to show signs of liquefaction due to vibrations, but the "J-92 breakwater" is still in good condition, showing strong resistance to wind and waves Capability and wave dissipation performance, anti-tilting stability is also very good.

Half an hour later, seeing that the experimental parameters were close to the limits of the plan, Professor Duan quickly issued instructions to reduce the power of the large wave generators one by one, and everyone in the monitoring center relaxed, which meant that the experiment was about to end.

Victory is imminent!

But just then, the accident happened!
A crying voice of a scientific researcher came from the communicator: "Professor Duan, it's not good, the electronic control module of the wave-making system may have failed due to the lightning strike 1 minute ago, and now the control signal cannot be transmitted! The power of the wave-making system Can't come down!"

Everyone couldn't help being surprised when they heard the words, Professor Duan's face changed, and then he asked calmly, "What did the original engineer say?"

"He...he is not very familiar with the wiring situation here, and he can't quickly troubleshoot the fault point. Now he plans to switch to the backup manual control system."

At this time, the large screen in the monitoring center began to pop up a series of alarms, indicating that the water level was close to the height limit line, and the hearts of everyone who had just relaxed tensed up.

Professor Duan took a deep breath and said loudly, "Activate the emergency plan immediately!"

All the scientific researchers present immediately started to act with dignified faces and a little panic. Fortunately, a drill was done last night, and overall there was no chaos.

Qin Ke and Ning Qingyun were interns, and they were not assigned to such an emergency plan that required rich practical experience. Academician Wen Yuanping and others could only watch the various values ​​​​on the big screen nervously.

The scientific researcher quickly said anxiously: "Professor Duan, the manual control circuit of the wave-making system has also broken down. Now the original factory engineer has rushed to the scene for emergency repairs. It will take about 10 minutes!"

10 minutes?
A bright red warning message popped up on the big screen in the monitoring center - "The water level has exceeded the upper limit line!"

The ceiling line is only about two meters away from the top of the submerged embankment!
According to the current rate of water level rise, there will be no embankment in less than 5 minutes!Once the dam is submerged, the pressure of the dam will exceed the limit, and the probability of collapse will increase greatly!

Immediately afterwards, several other bright red warning messages popped up - "The J-92 embankment is about to become unbalanced due to excessive pressure at the high section!"

"The 'Arc-Plate Penetration' module is about to go out of balance because the water pressure exceeds the theoretical value!"

"The phenomenon of ground liquefaction is accelerating, and the degree of liquefaction has entered the high-risk range!"

Everyone's expressions changed, especially those researchers, who subconsciously looked at Qin Ke and Ning Qingyun.

Because these problems were all mentioned by Qin and Ke in their report last night-the crisis of the dam under extremely harsh conditions due to an error in the mathematical model!
And now these big crises are imminent!
　Dazhang that is close to 5K, continue to ask for monthly ticket recommendation tickets and full reservations!
　　
　
(End of this chapter)