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Swept shock wave/boundary layer interaction (SWBLI) is a complex flow phenomenon commonly observed in three-dimensional hypersonic inlets. Wall temperatures can influence the scale of the separation of the swept SWBLI. It may lead to inlets unstart, resulting in a significant decrease in mass flow rate. This study delves into the flowfield of swept SWBLI under varying wall temperatures, using both experimental and numerical methods to examine the effects of these temperature changes on the separation scaling and the fluctuating velocity within the SWBLI flowfield. The investigation uncovers that modifications in wall temperature significantly impact the boundary layer's subsonic layer thickness, streamwise momentum distribution, and shear stress, which collectively alter the separation scale. To estimate characteristic surface limiting streamline angles under changed wall temperature conditions, a predictive model is proposed that utilizes the boundary layer shape factor H as a metric. Additionally, it is established that wall temperature variations can influence surface friction coefficients, which can, in turn, affect the pressure rise process during separation and alter the spatial angle of the separation shock. The fluctuating velocity characteristic reveals that the wall temperature affects the separated flow mainly on the incoming boundary layer. [ABSTRACT FROM AUTHOR]

Objective To explore the role of student research training program(SRTP) in improving the scientific research interest, basic knowledge and basic ability of undergraduate-master's consecutive medical students. Methods A questionnaire survey was conducted among 69 medical students who were in the 2015 and 2016 clinical programs. They participated in and completed SRTP. And some situations was statistic analysis including students' SRTP team formation, project implementation, satisfaction, and academic results(published papers). Results 85% of the project direction was to be completed independently by the project team members under the guidance of the mentor.The comprehensive scientific research ability of students at the later stage of the project was obviously higher than the beginning of the project.More than 85% of students were satisfied with the completion of the SRTP course. SRTP had a significant improvement in students' scientific research thinking, communication and collaboration ability, experimental habits, and learning ability. There were shortcomings such as low student publications and low quality. Conclusions SRTP can be used as a pre-cultivation link for the improvement of scientific research ability of undergraduate-master's consecutive medical students. It plays a bridge role of scientific research ability in continuous cultivation of undergraduate-master degree, and which has important reference value for talent training in medical universities.

The effect of an isentropic compression wave fan on shock wave/turbulent boundary layer interaction induced by a curved fin is studied by the nanoparticle-based planar laser scattering method, oil flow method, and numerical method. The curved fin consists of two parts: A curved surface generating an isentropic compression fan and a planar surface ensuring the compression fan focuses into a swept shock wave. The flowfield is compared with the three-dimensional separation flowfield induced by a planar fin with the same deflection angle. The results show that the compression fan can compress the turbulent boundary layer without separation, while the focused swept shock wave drives the whole turbulent boundary layer to separate. The flat plate turbulent boundary layer beside the fin is mainly rolled into the separation vortex. The focused swept shock wave adjusts the separation zone to be quasi-conical, suggesting that the quasi-conical separation is the nature of the flowfield in which a turbulent boundary layer interacts with a swept shock wave. The isentropic compression part of the curved fin can prevent the secondary separation of the planar swept shock wave/turbulent boundary layer interaction by changing the attachment process. Based on the focus point of the compression wave fan, the equivalent apex of the curved fin is proposed. The area and intensity of the separation vortex induced by the curved fin are nearly linear as those in the planar fin interaction flowfield. However, the area of the separation vortex induced by the curved fin is larger. The intensity growth of the vortex caused by the curved fin is slower than that of the planar fin. [ABSTRACT FROM AUTHOR]