Apparatus for real-time acoustic imaging of Rayleigh-Benard convection.
نویسندگان
چکیده
We have designed and built an apparatus for real-time acoustic imaging of convective flow patterns in optically opaque fluids. This apparatus takes advantage of recent advances in two-dimensional ultrasound transducer array technology; it employs a modified version of a commercially available ultrasound camera, similar to those employed in nondestructive testing of solids. Images of convection patterns are generated by observing the lateral variation of the temperature dependent speed of sound via refraction of acoustic plane waves passing vertically through the fluid layer. The apparatus has been validated by observing convection rolls in both silicone oil and ferrofluid.
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ورودعنوان ژورنال:
- The Review of scientific instruments
دوره 78 11 شماره
صفحات -
تاریخ انتشار 2007