Before returning to the college entrance examination, I became popular in the science circle

Chapter 269 Essence
Soon, at several intersections near the coastline, there were obvious signs saying that the inside was under maintenance and that you should not approach it yet.

With this road sign, even visitors who are not afraid of the heat and want to take a walk on the beach will be reminded to turn around and look back, and the diversion is completed quietly.

The quality of the people who can appear in the health care base is generally high, and there are basically no weirdos who seek death and are uncooperative.Since it was a reminder for maintenance, why would they go ahead and take risks?
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The sun climbed higher and higher, hiding behind the thick clouds, shining with the hot summer temperature.However, in such an uncomfortable temperature, Wu Tong has forgotten about the outside world, his mind is running rapidly, and huge waves are surging in Wu Tong's mind... Mathematical symbols and formulas are flying...

Euclidean space... Usually vectors in the 3-dimensional space V3 can discuss geometric properties such as length and angle.If a = (a1, a2, a3), β = (b1, b2, b3), then the inner product of the length a of a and β and the angle between a and β, β = arccos (assuming that both a and β are non-zero vector).Generalized, in n-dimensional vector space Rn, if a=(a1,...,an), β=(b1,...,bn)

Regulations... When returning to fluids, all fluids that can be predicted will, in a sense, be consistent with the truth of the universe, pluck the strings of variables, and stir up all transformations in the world.

Existing mathematical methods are difficult to solve the value of the NS-equation. Since the emergence of this problem, mathematicians have been puzzled by it. Currently, many of them are in the process of solving the problem when the variable of time is infinitely amplified. You will face the tragedy of equation explosion.The result of the calculation, usually, has normal logic.

Just like water flowing backwards... just like a car driving on a barrier-free road, it will suddenly disintegrate without warning at a certain point in time.Such a ridiculous possibility.If you speed on the highway, you will just be caught by the traffic police system and be fined, or more seriously, your driver's license will be revoked.

Using the Euler equation to simulate and deduce, where two flows meet, the vorticity (speed and direction of rotation) of the fluid will increase sharply. This growth rate is very fast and can become infinite in a short period of time.

This kind of infinity is a singularity, and it is exactly the value that mathematicians want to know whether it exists in the Euler equation and the NS equation... Only in this direction, the computer cannot calculate the value of infinity.

In other words, it gets very close to seeing the singularity, which is an approximate solution, but it's not really an exact solution about the singularity.

The NS equation has its solution. What she wants is the real solution, not the so-called approximation.

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When the existing mathematical methods are ineffective, is it the end of the road?No, Wu Tong doesn't agree. What she agrees with is that there is no perfect way and there is no method. Then create a mathematical method as a solution tool to climb this insurmountable mountain.

Momentum has an equation. The force acting on fluid particles. For the center of a fluid particle, it will be subject to stress (Normal Force) and shear force...

The essence of fluid mass conservation, that is, the fluid mass passing through a fixed area in unit time is constant... The connection between the laws of fluid motion... In the case of macroscopic low speed, it is obtained by using the constitutive equation and Newton's second law Governing equations for fluids and governing equations for solids.

Conservation of momentum, fluid momentum balance...infinity of topology...nonlinear, incompressible, multi-scale...
Wu Tong's meditation lasted for half a day, from when the morning sun had just risen in the sky to when it was slowly about to fall into the horizon again.Wu Tong's eyes gradually turned clear with the increasing sea breeze and surging waves under the setting sun. The smile on her lips became thicker, and the vein of breakthrough was in her heart. "Sister An, Brother Cai, let's go back!" Wu Tong turned his head and looked at An Wenshu, who had been guarding her, and Cai Yi, who was not far away and didn't know when he would arrive.

"Thank you for staying here with me, you are both dry and hungry. Let's go back and replenish some energy. Sister An, Brother Cai, you all should rest more tomorrow. I won't go out from tomorrow!"

"Mr. Wu, are you done here?" An Wenshu breathed a sigh of relief when he saw Wu Tong come back to his senses. He unscrewed a bottle of water and handed it to Wu Tong, asking her to moisten it slowly and not to take in a large amount at once. .

In a state of dehydration, with a large amount of excess water, the osmotic pressure in the blood will be significantly reduced, and the water in the blood vessels will enter the tissues and cells, and the osmotic pressure will also decrease within the cells, resulting in edema.Especially when brain cells are edematous, nausea and vomiting can easily occur...
All factors that affect Wu Tong's health must be excluded, not to mention the possibility of affecting Wu Tong's treasured brain damage, which is absolutely prohibited and will never be allowed to exist.

"Yes, a mathematics project has a direction. I may do this project in the near future to allow my family to recuperate with peace of mind. If they want to return, please Brother Cai arranges for someone to send them back. I will check the progress of the project here. Determined!" Wu Tong took advantage of the fact that he had not completely entered the state of seclusion at the moment and explained the matter in advance.

Her father loves his job and is used to working hard. He probably won't be away from his job for a long time. He can leave his uncle's business for a while, but he can't do it for a long time. After mid-August, her mother will also start school. Prepare····

The family may have plans to go home after the freshness is over. Wu Tong is not sure whether she will still be contactable by then. She is afraid that her family will worry about disturbing her and will not want to speak, so she waits silently for him to waste unnecessary time. Tong especially entrusted him first.

The NS-equation involves a vast area. Although she currently has a relatively clear direction, she will not be able to completely overcome this problem in a short while.

Creating tools and completing proofs...Wu Tong feels that she was able to solve this problem in September because she did it at a super speed.Her time here is too uncertain. Don't let her uncertainty affect the normal life of the family.

"Prepare enough draft paper and pens for me!" Wu Tong arranged them one by one.She originally planned to spend some time with her family and have a good rest, but she was not allowed to prepare these things here.Unexpectedly, inspiration always comes inadvertently. On the first day after her birthday, she accidentally caught the inspiration that pierced the barrier, connected all the scattered progress, and created the direction of progress.

When you have inspiration, you must seize it at the right time. Wu Tong immediately changed his plan.

(End of this chapter)