EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF BOTH FLOW INDUCED CAVITY OSCILLATION AND ITS SUPPRESSION BY ACOUSTIC EXCITATION

Flow induced oscillation in a cavity and its suppression by means of acoustic excitation were studied both experimentally and numerically. In the experiment it was found that with the leading edge pure tone excitation at some frequencies and intensities. the flow-induced oscillation in the cavity could be greatly suppressed. Cavity flows both with and without acoustic excitation were studied by solving the 2-D time-dependent Reynolds averaged Navier Stokes equations using explicit predictor-corrector difference algorithm of MacCormack. Effects of turbulence were simulated via Cebeci-Smith turbulence mode with relaxation modification. The computational and experimental results are compared. and good agreement is obtained.

数字病理切片库平台建设及其在临床病理住院医师规范培训中的应用

临床病理住培是重要的毕业后教育阶段,旨在培养合格的病理医师。目前,临床病理住培授课课时少、内容多,传统病理教学方法存在诸多局限和弊端,因此,改革势在必行。随着网络信息技术的发展,信息化、数字化教学手段逐渐应用于教学实践中,相关研究亦成为教育界关注的热点。数字化病理切片库的建立将给病理教学带来革新,建立规范的数字病理切片平台充实临床病理住培专业学习,是实践教学和住院医师培养的重要内容,该文就数字病理切片库平台建设及其在临床病理住培中的应用进行阐述,以期为临床病理住培教学提供参考。