I really just want to be a scholar

Chapter 658 With the strongest posture, officially announce the debut of the two to the physics community!

Qin Ke looked around at the large group of people in the dark, and suddenly realized that almost all the most famous physics professors in the education field gathered here, and there were also Academician Wen Xuanping and the researchers from the Institute of Physics in the scientific research field. Half of the bigwigs in the physics world gather in front of us.

Such an opportunity is extremely rare!
His mind turned sharply, and he made a decision in a blink of an eye, and said loudly at the moment:
"Hello, everyone. I am Qin Ke, a doctoral student in the Department of Physics of Qingmu University. It is a great honor to be here to report to all teachers and seniors the results of my doctoral thesis "Establishing a Fluid Dynamics Model with the NS Equation as the Core to Improve Magnetic Fluid Power Generation." A Study of Efficiency. But before I officially start my presentation, can I make a small request?"

Qin Ke's words made everyone in the audience slightly stunned. How could anyone even make a request during the defense?
But this also aroused everyone's curiosity. Academician Wen Xuanping on the judging panel smiled and said, "Qin Ke, what request do you want to make? Let me tell you first, it is impossible for me to release water and lower the standard. For someone like you For students who apply for doctoral graduation in advance, I will only be stricter and try my best to pick out the deficiencies in your reports and papers, so you have to be mentally prepared."

Hearing Academician Wen's half-joking, half-joking words, everyone couldn't help but smile.

Qin Ke said with a smile: "Academician Wen, you have always been upright, serious and responsible, and abide by principles. These high-mindedness and integrity are a model for us to learn from. How dare I make such a stupid request?" He pinched his face as he said: "Besides Oh, my skin is so tender, even if I really think so, I'm too embarrassed to bring it up."

There was another burst of good-natured laughter from the audience.

Almost all the people sitting in the auditorium are senior professors or school leaders, and there are quite a few doctoral students who have attended or served as judges in the defense meeting. The other doctoral students are not very nervous when they stand on the stage, for fear of a little performance. Does it affect the evaluation, resulting in the inability to graduate and get a degree certificate?
Only Qin Ke, who is not stingy, dares to joke like this in a place full of academic leaders.

But there is one thing to say, most of the people present are serious scholars or school leaders. Seeing Qin Ke's relaxed expression, the lines of his face that had been tense before inertia softened, and he smiled unconsciously. .

Of course, most people think that Qin Ke is humorous, but there are also people who think that Qin Ke is trying to please the public. For example, Qi Wenrui, who originally disliked Qin Ke, snorted softly, and his impression of Qin Ke was even worse. up.

What does this kind of laughing and joking look like?As a scientific research worker, especially a person who wants to be a professor, first of all, he must be serious, otherwise how can he give people a sense of authority, how can he make people feel awed and then held up?

Especially when Qi Wenrui saw Vice President Wen, who was usually strict with outsiders, instead of criticizing Qin Ke, he even smiled, and couldn't help but feel even more jealous.

Academician Wen Xuanping smiled and said: "Okay, Qin Ke, if you have something to say, speak up quickly. Your defense time is one hour. No matter how much you delay now, I have to ask you enough questions before letting you go."

Qin Ke smiled: "It is precisely because the defense time is one hour, there is still plenty of time. I think it is rare to have so many seniors today, many of whom are senior professors and front-line scientific research workers, and my thesis ends with It is mainly about theory, but it also involves practical applications such as magnetic fluid power generation, so it is just right to ask them to give pointers.”

Having said this, Qin Ke's expression changed, and he said seriously: "So, in the questioning session later, besides you and the seven judges, can everyone present ask questions freely? No matter who asks As long as it is related to the thesis, I will answer it. If I can’t answer it, or if I can’t answer it to the satisfaction of most people, then it’s fine to treat my defense this time as a failure.”

As soon as these words came out, the whole place fell silent instantly.

Everyone thought they heard it wrong!
Everyone is used to all kinds of euphemisms begging the judges to relax their requirements so that they can pass the dissertation defense smoothly, but this is the first time that such a defense student who actively asks for more difficulty and openly challenges all the experts and professors present!
You must know that most of the present are senior physics professors. If you really want to find faults in your doctoral thesis, how can you not find them?When the time comes, you are too tired to deal with it, aren't you asking for trouble?If you can't answer, this defense meeting will become a joke!
In the surprised eyes of the audience, Qin Ke said again: "Here, I also made a request for classmate Ning Qingyun without authorization. When it comes to her defense, I also ask all the seniors present to point out. If she finds something wrong with the thesis, she is not good at learning, and she has to go back to her doctoral studies. I wonder if the judges will agree to my two requests?"

Everyone in the audience finally recovered from the shock, and a little commotion began to appear.

Qin Ke looked very serious when he said these words, and his words were polite, but everyone could hear the confidence and arrogance in his words.

Many people understood Qin Ke's intention after a little thought.

Qin Ke and Ning Qingyun are going to officially announce their debut to the physics community with the strongest posture!

Aren't you curious about our strength?Don't you want to measure our level by watching this defense?Then I will give you a chance to challenge us in person and convince you!
What confidence, what arrogance!
Jiang Weixian, an old academician, frowned.He knows Qin Ke better than others, so he naturally guessed that besides wanting to make a big splash, Qin Ke has another purpose in doing this, which is to take over the Fluid Mechanics Laboratory more smoothly, so that he and Academician Guo Weiyang can quit scientific research as soon as possible. Front line, take a good rest.

"Qingmu University Aerodynamics (Fluid Mechanics) Research Laboratory" is a national key laboratory. Even if Qin Ke and Ning Qingyun are famous all over the world, the school will probably agree, but it is not easy for them to take over The most unavoidable thing is the voice of doubt from inside and outside.

After all, the fame and achievements of the two in physics are far inferior to those in mathematics.Unlike mathematics, physics has so many conjectures and so many difficult problems that can be solved. Even if there are, they cannot be solved with brains and pens. It takes a lot of time and money to verify and publish them.

If they rely on one paper after another to accumulate reputation, it will take at least ten or eight years before they can reach a high enough reputation and take over the Fluid Mechanics Laboratory as a matter of course-this is also the original time plan of Jiang Weixian and Guo Weiyang.

So Qin Ke simply took advantage of the opportunity that most of the most well-known academicians, professors, and school leaders in the physics world gathered here, and used the defense as an excuse to show his strength and wipe out all voices of doubt!

This is undoubtedly the most effective and fastest way to become famous and to gain prestige!
It's just...it's still a little risky!This time it can be said that there are a lot of big players, Qin Ke wants to challenge a hundred without being questioned by everyone, is it possible to do this?
Jiang Weixian and Academician Guo Weiyang next to him looked at each other, and they both saw the worry in each other's eyes, but Qin Ke's words had already been spoken. Apart from choosing to believe in Qin Ke, could they stop Qin Ke?

And considering Qin Ke's great concern for Ning Qingyun, since he even involved Ning Qingyun this time, it shows that he has absolute confidence!
Jiang Weixian and Guo Weiyang, two old academicians, could only sweat secretly in their hearts, and at the same time hoped that this kid could really create another miracle.

Even Jiang Weixian was so worried, let alone other people.

Academician Wen Xuanping in the judges' seat couldn't help but kindly persuaded: "Qin Ke, with eight of us asking questions, you still think the difficulty is too low? There is really no need to add extra problems..."

Suddenly, someone got up and applauded: "You are so courageous and courageous. Professor Qin is indeed Professor Qin. I admire him very much. I will definitely ask you a question or two during the question and answer session later!" The speaker was Qi Wenrui.

Qi Wenrui has always wanted to find an opportunity to defeat Qin Ke in public, and let the seniors present know who is the most dazzling new star in the physics world. Now that Qin Ke is "in a daze" to make such a request, how can he miss it? A once in a lifetime opportunity!
So when Academician Wen Xuanping persuaded Qin Ke, he was afraid that Qin Ke would back down, and Qi Wenrui didn't care about the possibility of causing the boss's displeasure, so he immediately stood up and supported Qin Ke with words, preventing Qin Ke from withdrawing his words.

As soon as he stood up, he immediately became the focus of everyone's attention. Most of them could see through his thoughts, and knew that this young man might be at odds with Qin Ke.

Qi Wenrui also knew that standing up like this would make his conflict with Qin Ke public, but he wasn't afraid, and he didn't care!As long as you can step on Qin Ke's position, everything is worth it!
Qin Ke glanced at Qi Wenrui, smiled faintly, the one who wants to conquer today is an unconvinced little character like you!
"Professor Qi, don't worry. I, Qin Ke, spit and nail, and I won't take back what I say. I will wait for your challenge later."

Seeing Qin Ke's resolute attitude, Qi Wenrui sneered and sat down again, and Academician Wen Xuanping finally nodded in agreement after communicating with several judges in a low voice.

"Thank you all the judges and teachers." Qin Ke bowed slightly, then straightened his waist: "Please allow me to start the formal report."

"There are two key words in my report topic, one is hydrodynamics, and the other is magnetic fluid power generation."

"Magnetic fluid power generation is believed to be familiar to most of the seniors here. It is based on the Hall effect. When a high-temperature and high-speed plasma gas passes through a conductive tube, if a magnetic field is applied perpendicular to the direction of the gas flow, the positive and negative ions in the gas , due to the action of the Lorentz force, it will be perpendicular to the direction of the magnetic field and the direction of the flow velocity, and will be shifted towards both sides in anti-phase respectively. As a result, a potential difference will be established on the electrodes on both sides of the conductive tube, so that the electrodes can be to obtain continuous output power."

"This is a high-efficiency, low-pollution energy technology. At present, 17 countries are researching this technology. Our country has abundant coal resources, and a lot of manpower and material resources have been invested in this technology. As far as I know The Institute of Physics of the Xia Ke Academy and many universities have related scientific research projects. I think that with the continuous breakthroughs in the research of controlled thermonuclear reactions, the fusion reactor-magnetic fluid power generation device will become a mainstream energy generation technology sooner or later. ..."

"I have also learned that the current domestic and international research on magnetic fluid power generation mainly focuses on high-temperature combustion, oxidant preheating, high-temperature materials, superconducting magnets, and high-power converter technology to solve the problem of plasma flowing across the magnetic field. Stability issues, but rarely studied from the perspective of fluid mechanics, probably because the theory of magnetohydrodynamics is relatively imperfect and difficult to start with. Today, I will try to combine NS equations to establish a fluid mechanics model, which is never the same To solve the problem of magnetohydrodynamics from the perspective of magnetohydrodynamics, and then improve the efficiency of magnetohydrogen generation..."

Qin Ke looked calm and talked freely. With the help of the gloves he was wearing, he easily controlled the switching of the PPT to enhance the effect of the speech.

The audience was silent, and everyone listened attentively. Whether it was to find out Qin Ke's strength, or to ask quality questions later, they were not allowed to be distracted.

But as Qin Ke's narration deepened, more and more viewers began to realize that they could no longer keep up with Qin Ke's rhythm. Qin Ke's explanation simplified the mathematics part as much as possible, but mathematics is still extremely important in the paper. It is an integral part, because he develops the theoretical knowledge of fluid mechanics around the NS equation, and mathematics is inseparable from it.

So many professors who wanted to criticize, including Qi Wenrui, had to admit embarrassingly that they couldn't understand the core part of Qin Ke's thesis, let alone judge whether there was a problem.They can only make rough judgments from the most basic physical theories and the logical context of the thesis.

When Qin Ke explained the part of magnetic fluid power generation, most of the people present were secretly relieved, and finally understood it roughly.

But before they could relax, Qin Ke has quickly switched from magnetic fluid power generation to magnetic fluid dynamics, which is a discipline that combines fluid mechanics and electrodynamics to study the interaction between conductive fluid and electromagnetic fields. The core is also the basic equations, This again involves nonlinear partial differential equations in mathematics.As we all know, any "nonlinear" can basically be equivalent to "very complex", and it is usually solved by approximate methods or numerical methods.

"When the fluid dynamics model is established, we can establish the above-mentioned equations, and substitute several special values ​​into it for verification, and then obtain the special solutions of the Hartmann flow and Couette flow commonly used in the industry. And this can also be deduced that this hydrodynamic model is established and correct..."

"Through the hydrodynamic model, we can find that when the above-mentioned curved trajectory conforming to the equation group (16) is carved out inside the power generation channel, the characteristics of magnetohydrodynamics can be fully utilized, making the cutting effect of the conductive gas when it passes through a strong magnetic field more effective. Obviously, thus improving the power generation efficiency. I have obtained the specific value in the mathematical calculation just now, and then I will explain my simulation experiment and the value obtained according to the simulation experiment..."

"We can see that the deduction of the fluid mechanics model is basically consistent with our simulation experiment, and the value is substituted into the output power per unit volume We of the conductive fluid. According to We=σv*2B*2k(1-k) , we can calculate the results before and after optimization, as long as the conclusions in my paper are used, the efficiency of magnetic fluid power generation can be increased by about 27% at almost no cost!"

The audience once again fell into a bewildered silence. Except for academicians Ning Qingjun, Jiang Weixian, and Guo Weiyang who had read the papers beforehand, everyone else was in a state of shock.

They were completely shocked by Qin Ke's conclusion.

　Continue to ask for monthly ticket recommendation tickets and full reservations at the end of the month!

　　
　
(End of this chapter)