Measurements of Powder Snow Avalanches- Laboratory - |
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| Authors: | Stefan Keller |
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| Institution: | (1) Laboratory of Hydraulics, Hydrology and Glaciology, Swiss Fed. Inst. of Technology, CH-8092 Zürich, Switzerland |
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| Abstract: | Laboratory simulation of powder snow avalanches serves for the validation of numerical models and as a tool in its own right for consulting and research purposes. Two-phase gravity currents are simulated in water with quartz powder or glass spheres as the particle phase. Particle-phase velocity profiles and particle-phase volume fraction profiles are measured with an ultrasonic device. The experimental setup and the current state of the measurement technique are described and preliminary results are presented. |
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| Keywords: | Powder snow avalanches laboratory simulation ultrasonic measurement technique turbulent two phase flow |
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