Optimisation of the depth range of Ultrasound Image Velocimetry on cohesive sediment (fluid mud) flows

Ultrasound Image Velocimetry (UIV) was applied on different samples of mud. The ultrasound transducers were mainly chosen to cover a wide range of ultrasound frequency, ranging from 1.75 MHz to 6.67 MHz. The mud samples all consisted mud from the same origin (Zeebrugge, Belgium). They differed in density ranging from 1.12 g/cm³ and 1.175 g/cm³. The influence of these variables on the depth range of the UIV technique was studied.本研究将超声成像测速法（Ultrasound Image Velocimetry，UIV）应用于多组泥浆样本。实验所用超声换能器覆盖了1.75 MHz至6.67 MHz的宽超声频率范围。所有泥浆样本均取自比利时泽布鲁日（Zeebrugge）同一产地，其密度介于1.12 g/cm³至1.175 g/cm³之间。本研究探讨了上述变量对超声成像测速法技术探测深度范围的影响。