学术动态

#RAFS^†Session 16 (Featuring a Guest Talk)

Time：May 9, 2021, 15:30--17:30

Location：434 Qi Xiang Building, Chang'an Campus

Speaker 1：Mr. Zhang, Jinhan (Aeronautics, Class of 2021)

Title 1：A quick tour of fluid mechanics: theory and engineering

Abstract 1：All liquids and gases are fluids: they are substances that flow or deform under the application of certain stress. In this talk, we first show how to apply the basic laws of classical physics to fluid mechanics and establish the governing equations. Then we briefly talk about turbulence and computational fluid dynamics, as well as the difference between theory and practice. Finally, cavity flow, a flow that has been studied extensively in theory and engineering and that may cause noise and structural fatigue problems, will be introduced.

Speaker 2：Mr.Yang, Rui (Class of 2022)

Title 2：Fubini’s Theorem

Abstract 2：The most powerful tool for the evaluation of a double integral is Fubini’s theorem, which enables us to only consider iterated integrals. Thus the measure of any plane measurable set can be expressed as the integral of the linear measure of its sections perpendicular to an axis. In this talk, we confine attention to the case of nullset; we show that almost all vertical sections of a nullset have measure zero.

† Real Analysis Friday Seminars. Contactshuangshen@nwpu.edu.cnfor any inquiry. For a history of this seminar, please visithttps://teacher.nwpu.edu.cn/2017010194.