采用臭氧氧化、可食膜掩蔽、臭氧氧化+可食膜掩蔽3种方法,清除榴莲果肉表面臭味,并利用电子鼻定量检测除臭效果。将密封榴莲果肉样品的系统开0、8、16个小孔,减小榴莲果肉的裸露面积,使榴莲臭味形成3种质量浓度梯度,电子鼻信号曲线能较快地达到平稳状态,用于建立偏最小二乘(partial least squares,PLS)法分析模型。
Detailed schlieren and laser lightsheet visualizations of the near wake of micro vortexgenerator (MVG) revealed large structures that were different from those of the undisturbedturbulent boundary layer. These structures were attributed to the rapid breakdownof the primary trailing vortex pair. The breakdown was thought to arise from a cylindricalKelvin–Helmholtz-like instability surface. The structures appear to be hairpin or ring-likein nature that showed eruptions into the freestream flow, entraining it.