I kidnapped an alien civilization

Li Mo read on patiently. It turned out that the engine encountered a mathematical problem during the research and development process, turbulent flow.

After the aviation rocket is ignited, the interior of the engine is filled with high-energy gas after combustion. How to describe the velocity field and turbulence intensity distribution of the cold gas phase flow in the sudden expansion combustion chamber plays a vital role in the optimization of the engine mechanism. Because energy will be dissipated in turbulent flow.

When Li Mo saw this question, he suddenly felt that his head was very big.

The phenomenon of turbulence is actually very common. The river bypasses the stones, the coffee mixed with the milk, and the green smoke that rises slowly. Simply speaking, turbulent flow is a small eddy flow contained in a large eddy flow, but from all scales, it is a kind of movement that is disordered in time but has certain laws in statistics.

Turbulent flow is hailed by scientists as the last unsolved problem of classical physics, and it has also become the object of in-depth research by countless physicists and mathematicians in recent years. But so far no scientist has announced a successful solution to it.

According to legend, the famous theoretical physicist Werner Heisenberg said before his death, When I see God, I must ask him two questions-what is relativity and what is turbulence. I believe He should only have an answer to the first question.

The fundamental reason is that there are too many unknown factors in turbulence. Mathematics is a rigorous subject, and unknown results can be calculated based on known conditions. But when there are too many unknown conditions, this tool is not so useful.

At this time, it is necessary to establish a mathematical model to fuzzy solve this problem.

How about it, are you confident to solve it? Seeing Li Mo's frown, Mr. Wang asked urgently.

Li Mo thought for a while and replied: The 912 members who designed the engine must have tried it. In fact, there is currently no solution to this kind of problem. We can only find an optimal solution through a mathematical model.

Elder Wang nodded: He has indeed tried, but the mathematical model he made is far from the data obtained during the actual experiment. So please let me find someone who can solve this problem.

I think the person who can solve this problem is none other than you.

Li Mo felt like a donkey in a collar, and what Wang Lao said was a whip.

Seeing his hesitation, Mr. Wang said with a serious face: I know it's really hard for you to let you do this kind of theoretical physics alone as a mathematics student.

It's not convenient for me to tell you the specific situation due to confidentiality reasons, but this mathematical model is related to the new generation launch vehicle program.

Now that we are about to enter the space age, controlling space is equivalent to controlling the world. All countries are also gearing up. Since our country started relatively late, although we have made many achievements in space exploration in recent years, this is far from enough.

Rocket engines played a big role in the space age, so the country started a new program to prepare for a rainy day. Now that program is in trouble.

What I want to ask is, can you go up there!

Wang Lao's words hit his heart like a hammer. Could it be that one thing was not done because of difficulties?

Li Mo stood up from the chair, Please entrust this task to me, I will do my best to complete it.

Inside the red flag car, Li Mo looked at the green farmland outside through the car window, regretting in his heart: Why did I agree?

There is specialization in the art industry, especially in this high-end academic field, and problems cannot be solved with a passion for it. He is really not sure about this turbulence problem.

Jiang is still old and hot. What Wang Lao said made me boast. Now he knows why Wang Lao will be hailed as an older generation of scientists.

Under Mr. Wang's fooling, Li Mo decided to go to the studio of that 912 member to learn more about the specific data.

Unknowingly, the Hongqi car drove on a rugged mountain road. Even though Haige's driving skills were very good, he still felt very bumpy.

How far is it? Li Mo felt his stomach churning.

Brother Hai steered the steering wheel, carefully avoiding the stones on the roadside, We'll be there soon.

What kind of person would set up his studio in such a remote place? Could it be that he doesn't understand the principle of hiding from the world? Li Mo muttered in his heart. According to the current level of technology, even if he hides in a remote place, he will be hidden. The satellites in the sky discovered that it might as well be among the crowd.

This is also a freak. Looking at the wilderness outside the window, he had already defined this 912 member.

The Hongqi car stopped slowly.

It's here. Hai Ge pulled the handbrake.

Li Mo got out of the car and looked at the scene in front of him in silence.

Because there is nothing in front of him, no people, no houses, no trace of man-made.

Is it underground? He looked at his feet and stomped a few times to make sure it was hard ground.

Brother Hai came to a rock wall full of ivy, took out a card from his pocket, and swiped it in the corner.

On the stone wall, a stone door opened silently, and bright lights came from inside.

I'm fine!

Looking at the magically appearing exit in front of him, Li Mo has a new understanding of this wonderful member of 912.

Put on the hood. Brother Hai took out a black hood from somewhere and handed it over.

After putting it on, Li Mo found that there were two small holes in the front of the hood, allowing him to see the road ahead clearly.

In the cave, it is not allowed to take it off. Hai Ge tidied it up for him, making sure it was completely covered.

Li Mo nodded.

The stone gate is not big, it can only accommodate one person to pass through, and he follows Brother Hai.

Passing through the stone gate, the eyes suddenly open up. This is a cave with a height of more than 6 meters. There are traces of railway tracks on the ground of the cave, and Li Mo knew that this must be an abandoned train tunnel.

He must be a mouse. Li Mo made a new definition.

Dim street lamps hung on the tunnel walls, and he had to be careful.

912611? Along with the sound of the bullet being loaded, came a voice.

Brother Hai stopped and responded: 912166! Hearing the voice, the other party seemed to put away their weapons.

Looking back, It's okay, it's the defender.

Well, it seems that this wonderful 912 is also afraid of death. Li Mo thought to himself.

From time to time, water droplets dripped from the top of his head and fell on him. There was silence around him, only the footsteps of the two could be heard.

Just when he couldn't help but was about to stop Brother Hai in front of him.

Haizi, who did you bring here today? A loud voice came from a side hole next to it.

It's here, remember you can't let him know your name. Hai Ge turned around and said seriously.

Li Mo looked at the mouth of the black hole and nodded.