Observation of temperature peaks due to strong viscous heating in a dusty plasma flow.
نویسندگان
چکیده
Profound temperature peaks are observed in regions of high velocity shear in a 2D dusty plasma experiment with laser-driven flow. These are attributed to viscous heating, which occurs due to collisional scattering in a shear flow. Using measurements of viscosity, thermal conductivity, and spatial profiles of flow velocity and temperature, we determine three dimensionless numbers: Brinkman, Br = 0.5; Prandtl, Pr = 0.09; and Eckert, Ec = 5.7. The large value of Br indicates significant viscous heating that is consistent with the observed temperature peaks.
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ورودعنوان ژورنال:
- Physical review letters
دوره 109 18 شماره
صفحات -
تاریخ انتشار 2012