I really just want to be a scholar

Chapter 426 Don't try to teach the gods
Lao Hu briefly introduced the members of the research group one by one. The two graduate students are Mo Yougui and Hou Weijin, both in the second year of graduate school. They are the main experimenters of this project, and the rest of the undergraduates are interns.

Hu often determines the technical direction and the main method of the experiment, and the details are perfected and implemented by the graduate students with the undergraduates. When encountering difficulties, Hu will personally guide the research.

After completing the mutual introduction session, the topic discussion will officially begin.

First, Mo Yougui and Hou Weijin from the second year of research respectively introduced the progress, achievements, difficulties encountered, etc. of their respective departments, and then the miscellaneous group... Oh no, the undergraduate group also shared their experiences and questions during the internship.

Lao Hu will basically comment on each person one by one after each speech, with affirming achievements, pointing out deficiencies, and pointing out the direction to solve difficulties.

He often doesn't give the answers directly. First, many difficult points need to be answered through experiments. Second, he also trains students in this way.

As long as the direction is correct and you are willing to try hard, you will find the answer yourself sooner or later.

It was the first time for Qin Ke and Ning Qingjun to participate in such a formal topic discussion meeting. Usually, there are so many procedures for two people to do a topic. Basically, they can understand each other's meaning with just one look. Even if it is a topic of biological breeding, they also Just regularly read the weekly and monthly reports sent by Wei Xueming's team, and directly answer some difficulties and questions.

Therefore, Lao Hu's way of leading the team gave them a refreshing feeling, and the speeches of each team member also made them feel a little interesting.

Ning Qingyun listened carefully, and took a small notebook to record some key points.

Qin Ke was much more relaxed. He didn't take notes, but he listened attentively.

Finally, Lao Hu made a concluding speech: "As you can see, there are two goals for our project. One is to optimize the pipeline multi-phase separation technology to achieve oil-water separation in the pipeline transportation process; the second is to design a The technical requirements and production specifications that can be industrialized, rely on physical methods to realize the separation of the mixed liquid in a flowing state. For petrochemical companies, if we can overcome this problem, it will greatly promote the effect of energy saving and emission reduction, and improve the efficiency of crude oil. Mining economics."

"The research direction of our subject is to determine the best way to complete oil, gas, Technical installations for single or multiphase separation tasks of water and sand."

“刚才侯伟进已讲解了最近他通过10个直径50mm的旋流管、1个直径630mm的T型管和200m^3的复合脱水罐组建的油水两相分离实验模型，并给出了对粘度为10Pas～50Pas、密度为950 kg/m^3的高粘特稠油进行分离的第一期五十组实验结果数据，具体的实验模型可以看这个图示。”

"Judging from the experimental data, this experimental model is generally not a problem. For an oil-water mixture with a water content of 90.00%, 55.32% of water can be extracted. The final measured oil content of the sewage is less than 650mg/L, and the impurities are less than 620mg/L. L. However, such an effect is not satisfactory."

"The other model Mo Yougui just introduced is to establish a pipeline-type oil-gas-water separation experimental model by integrating gas-liquid T-type separation, oil-water cyclone separation, oil-water T-type separation, horizontal cyclone oil-water separation and S-tube technology. Also achieved certain results, but when the temperature of the mixed solution is 20°C to 30°C, the average water content is 50%, and the liquid flow rate is 2 to 25m^3/d, the experimental results are not ideal, and the gas phase still carries the liquid after separation. Drops, the minimum free water content in the oil phase is 27.92%, and the water phase oil content is 150%, which is higher than the qualified value of 23.17ppm."

"I can see all the efforts you put in, and you have indeed made a lot of progress, but there is still a long way to go before the passing line of our project. You still need to work hard to see how to improve the experimental model, Achieve better experimental results!"

When Lao Hu said this, his eyes fell on Qin Ke and Ning Qingyun, and he said solemnly:
"So, Qin Ke, Ning Qingjun, you two have a very heavy burden next. How to establish a mathematical model based on these experimental data, and then come up with a proposal to optimize the physical experimental model is crucial to the progress of the project. Otherwise, just Relying on them to explore based on theory and trial and error is too inefficient, and it may be difficult to complete this project in a year. And the time limit for this project is the end of April, and we only have three months left!"

Ning Qingyun clenched her little fist when she heard this, and was about to respond when Qin Ke suddenly took the small notebook in her hand, flipped to the notes in Hou Weijin's explanation, and fell into deep thought.

Ning Qingyun, Lao Hu, and other team members were startled by his appearance.Lao Hu was about to ask, but saw that Qin Ke had already taken the pen from Ning Qingyun's little hand, and began to count.

After 2 minutes, Qin Ke raised his head, looked at Hou Weijin, and said with a smile, "Senior Hou, can I ask a question?"

Hou Weijin felt flustered for a while, hey, the god of learning asked me for advice, he rubbed his nose, trying to calm down his agitated mood, put on a look of pointing his junior, smiled and nodded: "No problem, just ask. "

Qin Ke smiled: "Then I'll ask. When you mentioned building the experimental model just now, did you not take into account the effect of accelerated pressure drop?"

"That's right, because when the two-phase flow rate is low, the acceleration pressure drop is usually negligible." Mo Yougui replied after being stunned.

He was a little surprised. Accelerated pressure drop is a knowledge that graduate students only understand. Qin Ke actually knows?

——How did he know that Qin Ke had basically finished all the physics courses required by the old academician Jiang Weixian at this time, including five postgraduate textbooks, and Qin Ke was holding "Nonlinear Partial Differential Equations" Three-quarters of the content of "Exploration and Detailed Explanation of the Tox Equation", although I have only really understood and understood about 20% of the content related to physics, but my attainments in fluid mechanics are no more than those of ordinary Ph.D.s who specialize in this direction How much is the difference.

Qin Ke shook his head: "But in the first part of your model, 10 swirl tubes were used. At the 10th swirl tube, the two-phase flow changed significantly. When I saw your experimental data just now, It has been noticed that as the initial data of the two-phase flow rate slowly increases, the number of gas-phase pressure drop gradients generated in the flow cross-sectional area of ​​the subsequent pipeline increases in an irregular geometric progression. At this time, if the influence of the accelerated pressure drop is not taken into account, It will affect the subsequent separation effect."

"Look." Qin Ke held up the small book in his hand: "According to -gdPg/dz=[Pga+(1-a)pL]gsinβ, I substituted your experimental data, and the final result is enough to confirm my guess just now Also, in the T-tube part, the two-phase flow friction resistance pressure drop is also abnormal. I calculated it with Chisholm's calculation method, and the original data obtained did not match the experiment. I think it is still the 10th swirl. caused by the accelerated pressure drop brought about by the pipe."

"Of course, whether to reduce the swirl tube or add a deflector in the middle to reduce the impact of the acceleration pressure drop, you need to think about it, Senior Hou. I also need to analyze all the experimental data and establish a mathematical model. Proper advice..."

The surroundings became quiet, and everyone looked at Qin Ke intently.

The original complacency in Hou Weijin's heart turned into admiration, admiration and a little bit of bitterness.

When he saw Qin Ke's calculation formula, he knew that Qin Ke was right, but he himself really ignored this crucial link.

He admired: "I didn't expect Qin Xuedi to have such profound attainments in physics. I was really negligent here. I will try to remove the 10th swirl tube, or try to change it to a vertical swirl tube, and then do it again." Fifty sets of data."

Professor Hu also looked at Qin Ke in astonishment, thinking to himself, it seems that he once again made a second estimate of this talented student.

Lao Hu originally invited Qin Ke mainly because of his ability in mathematical modeling and his good understanding of the theory of fluid mechanics. Very proficient all right!
Just discovering the keen observation revealed by that small detail just now, as well as the profound knowledge contained in it, probably surpassed all the graduate students I have ever supervised!

It's amazing... Jiang Weixian, an old guy, really found a treasure. Why can't my old Hu receive such a powerful disciple?
Lao Hu sighed in his heart, then stretched out his hand to pat Hou Weijin's shoulder, and said with a smile:
"Physics is like this. The establishment of every experimental model must be calculated from the first link. Tell yourself through numbers, why you want to do this, why you don't do it, and whether there is any impact that is missed. Of course, it is more important. The main thing is to test, to find problems from numbers. Qin Ke is very good at this point. Why do you need a good mathematical foundation to study physics? Why do I let you keep one-third of your time on mathematical research? I believe that after this time, Everyone understands."

After a brief silence, applause broke out, not only for Professor Hu Qingfeng's guidance, but also for Qin Ke who discovered this key detail.

At this point, no one dares to underestimate Qin Ke, and no one has the extravagant hope of "pointing and pointing" Qin Ke.

After the agreed experimental data was encrypted and sent to Qin Ke and Ning Qingyun via email, this topic discussion meeting ended.

In the name of himself and Ning Qingyun being newcomers to the research group, Qin Ke invited the entire research group to a nearby restaurant for a good meal.With his eloquence and affinity, he quickly integrated into the research group, and the atmosphere in the group became visibly lively.

That night, Qin Ke and Ning Qingyun participated in the year-end dinner of all the employees of the Beijing office of "Lime Technology", and then flew back to their hometown by plane the next day.

And waiting for them in Yuanzhou, besides the joy of the Spring Festival, there are also unexpected things...

　Thanks for the rewards of "weird name" and "laugh and forget"!

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(End of this chapter)