Chapter 81 Senior Brother Gong expressed that he was very stressed
Xu Zhengyang was the only one in the dormitory. Kong Xianbo had a meeting in the student union, and Zhai Ziqiang went to the literary club to participate in activities.
Xu Zhengyang was playing games, but Xu Qingzhou found it too noisy, so he went to the study room with his computer and turned on the computer to read a paper on the use of niobium-titanium alloys in MRI.
The mathematical model has been completed, and there are still some corners that need to be corrected. Don't worry, we need to wait for new data to be perfected.
Xu Qingzhou originally wanted to just read the paper, but after studying the paper, he found that there seemed to be some other things that could be added to the model.
On Monday, it rained at night. In the morning, the clouds opened and the rain stopped. The sky was blue, with only a few white clouds hanging on the horizon. The sun poured down. The trees on the ground were moist, and the puddles on the ground reflected the light. A few people were late for class. The figure hurriedly passed by.
Professor Gu Zhizhong's class was in the morning. Xu Qingzhou skipped class and went directly to the laboratory. He had planned to go to bed early last night, but when he was working on the model, he unknowingly ended up working on it until two o'clock in the evening.
Institute of Physics Laboratory.
At 9:30 in the morning, Zhao Shengwen was taking Wang Wei and others working together in front of the equipment. Xu Qingzhou did not interrupt and walked straight to the office area on the other side.
There was an extra girl in the office with a bun and a rag in her hand. She was wiping the table. Her face was serene and meticulous. She was just wiping the table, but she felt like a ritual.
Seeing Xu Qingzhou come in, the man was excited and introduced himself: "Hello, senior brother! My name is Ren Xiaoling, a Grade 12 physics major. Please give me your advice, senior brother!"
Xu Qingzhou was taken aback by her enthusiasm. After coming to his senses, he smiled and said, "It's too senior. My name is Xu Qingzhou. I'm a freshman in Grade 14. I should call you Senior Sister."
The postgraduate stage is different from the undergraduate stage. At the undergraduate stage, everyone is basically called seniors and sisters. At the postgraduate stage, everyone is the same teacher and belongs to the same division.
"Ah? Are you Xu Qingzhou?" Ren Xiaoling was stunned for a moment. Gong Yunfei had mentioned before that there was a junior brother who was also in the project. He was not a handyman like her, but someone who actually participated in the project.
You are so young, you can participate in Professor Zhao's project in just your freshman year.
Looking at Xu Qingzhou, Ren Xiaoling couldn't help but admire him secretly.
Xu Qingzhou nodded, sat down at his desk, turned on the computer, and saw that the senior was staring at him, so he took the initiative: "Senior, can I help?"
Ren Xiaoling came back to her senses and quickly shook her head, "You sit down first, I will clean it up soon."
Professor Zhao's projects are among the best in the college. This junior student can join in as a freshman, so he must be a big shot.
Zhao Shengwen had finished his work at this time and walked in with Wang Wei and three others, "Xiao Xu is here."
"Professor Zhao." Xu Qingzhou greeted with a smile, stood up, and gave up his seat to Zhao Shengwen: "The model is ready, you can take a look."
Zhao Shengwen turned on the computer, checked the model, entered data, and simulated. After comparing the data, he was surprised, "This model is very good."
Yesterday, he specifically asked Wang Wei to help Xu Qingzhou, and Wang Wei replied that the little guy wanted to do it himself.
Wang Wei took the report paper and looked at the numerical values output on it. He was extremely surprised. He originally asked this junior brother to hit a wall and not to be too young and energetic, but he actually did it.
"Junior brother, you are awesome." Gong Yunfei clicked his tongue and sighed.
Hong Yayu also had an unexpected expression on her face.
"Although the process was tortuous, it still lived up to expectations." Xu Qingzhou said modestly. After a pause, he continued: "Actually, I had some ideas last night. I don't know if you would like to hear them." Zhao Shengwen said seriously: " Tell me what you think."
"Last night, I read several papers in Physical Review Letters and added some interesting things to this model."
As he spoke, Xu Qingzhou pulled out an A4 paper from the table and checked the calculations on it, "I added two functional models to the underlying model of Maxwell's equations, and also added several fluid mechanics equations."
Xu Qingzhou wrote very quickly. During the calculation process, he discretized the heat conduction equation into a solvable linear algebraic equation system.
When writing about one of the steps, Zhao Shengwen interrupted: "Hey, the N-S equation is different from the usual calculation method."
"Yes, I used Fourier transform to simplify this Navier-Stokes equation, and the operation is much simpler."
"Good idea." Zhao Shengwen was extremely amazed. Judging from Xu Qingzhou's use of these equations, his physics foundation is very solid.
"When the induced electromotive force is caused by changes in magnetic flux, the effect of the electric field needs to be considered, and the influence of the electric field needs to be calculated through the equation [\vec{B}\cdot\mathrm{d}\vec{A}=0]"
Xu Qingzhou sketched it on the manuscript paper, and various knowledge such as electric field theory and fluid mechanics came at his fingertips.
Zhao Shengwen also went from being amazed at the beginning to thinking seriously and sinking into calculations.
Ren Xiaoling held a small notebook and originally wanted to take notes, but she soon began to fail to understand.
Am I really such a bad guy?
Ren Xiaoling was about to cry but had no tears.
She observed carefully. Professor Zhao nodded slightly and asked questions from time to time. Wang Wei and Hong Yayu fell into deep thought, thinking about the steps.
Then there was Senior Brother Gong, who was touching his chin and trying to look like he was thinking, but she always felt as confused as she was.
Gong Yunfei was indeed a little embarrassed. He was not a math major and had a weak point in calculation. Those formulas were a disaster for him.
Of course, it would be okay to stop and think about it, but maybe Qingzhou spoke too quickly, and some of the twists were so smooth that he couldn't react at all.
Wang Wei and Hong Yayu are better, but some points are still relatively obscure and there is no time to think carefully.
"Therefore, in the synthesis stage, heat treatment is carried out at a certain temperature to cause heat to diffuse at the boundary between the Nb plate and the Ti plate to form an NbTi solid solution, and the remaining Nb or Ti can also become pinned due to the diffusion of Nb and Ti in each It can appear in the NbTi layer, and its quantity and uniform distribution are guaranteed, which is beneficial to the improvement of superconducting properties.”
"In the experiment, you can try to control the cryostat between 7.5-8K, and you may have unexpected gains."
After half an hour, Xu Qingzhou finished speaking and stopped to look at Zhao Shengwen and others.
Hong Yayu frowned and said, "But at 8K, the material completely enters the superconducting state. Is 7.5 too low?"
"This needs to be proven experimentally."
Xu Qingzhou spread his hands and said helplessly: "Compared to electromagnetism and materials science, I am more familiar with things in the quantum field. These contents are all calculated based on the current data and are just to provide you with a reference."
He really couldn't guarantee that this idea was correct, after all, it was not something he was familiar with.
(End of chapter)