A Hydraulic Model Investigation Of Drifting Snow
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A Hydraulic Model Investigation Of Drifting Snow
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Author : James L. Wuebben
language : en
Publisher:
Release Date : 1978
A Hydraulic Model Investigation Of Drifting Snow written by James L. Wuebben and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Boundary layer categories.
A Hydraulic Model Investigation Of Drifting Snow
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Author : James L. Wuebben
language : en
Publisher:
Release Date : 1978
A Hydraulic Model Investigation Of Drifting Snow written by James L. Wuebben and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Boundary layer categories.
A model investigation of drifting snow conditions was conducted in a hydraulic flume using a sand-water analog. Model results were evaluated to define modeling parameters that would allow quantitative correlation between measured prototype drift conditions and the model. The modeled structure was the standard plan snow fence designed by the Wyoming Highway Department and installed along Interstate Highway 80 in 1971. The performance of this system was documented by the Rocky Mountain Forest and Range Experiment Station of the U.S. Forest Service. Models of the fence were constructed for three heights and two geometric scales. Geometric scaling was based on terrain roughness and boundary layer thickness considerations, while velocity scaling was based on particle fall velocity and threshold of motion characteristics. Simulation of the atmospheric boundary layer was found to be of primary importance. Velocity scaling analysis suggested the use of a 'significant wind' concept based on a combination of velocity magnitude and frequency. Similarity of precipitation rate was not essential, and could be altered within limits to adjust the time scale. The response of the model to the shape of model elements was significant. Although the model is distorted and inexact similarity is achieved, it appears useful on a practical basis. (Author).
Simulation Of Drifting Snow In A Hydraulic Flume
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Author : James L. Wuebben
language : en
Publisher:
Release Date : 1978
Simulation Of Drifting Snow In A Hydraulic Flume written by James L. Wuebben and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
The objective of this investigation was to simulate conditions of drifting snow previously observed in the field in a laboratory hydraulic flume using a sand-water analog. Prototype conditions and model results were evaluated to define modeling parameters that would allow quantitative correlation between actual drift conditions and the model. Although exact similitude is not feasible, this modeling approach has proven useful in studies of snow conditions which defy theoretical prediction and would be very time consuming or impossible to evaluate in the field. Parameters examined in the model include prototype dimensions, flow velocity, geometric scale effects, structural porosity, and time.
A Research Hydraulic Flume For Modeling Drifting Snow Design Construction And Calibration
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Author : Darryl J. Calkins
language : en
Publisher:
Release Date : 1974
A Research Hydraulic Flume For Modeling Drifting Snow Design Construction And Calibration written by Darryl J. Calkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Flumes categories.
A fluvial bed hydraulic flume was designed and constructed for the purpose of modeling drifting snow. The operation of the flume facility was designed to be simple. Three butterfly valves control the operation of the storage tank system, and a variable-speed control on the pump-motor unit permits a wide range of flow velocities for any given depth. The discharge can be monitored continuously from a differential-pressure transducer which is connected to the venturi. Ease of operation allows for a greater flexibility in the design of experiments in the hydraulic flume facility. (Modified author abstract).
Model Studies Of Drifting Snow Patterns At Safeguard Facilities In North Dakota
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Author : Darryl J. Calkins
language : en
Publisher:
Release Date : 1974
Model Studies Of Drifting Snow Patterns At Safeguard Facilities In North Dakota written by Darryl J. Calkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Snow removal categories.
A model study of simulated drifting snow was conducted in a hydraulic flume. Various structures at the Safeguard facilities in North Dakota were modeled at scales of 1:100 and 1:200. Preliminary results indicate that drifting snow problems are minimal at this site, except for the utility tunnel entrance to the Missile Site Radar structure. Excessive drifting occurred when the flow approached the buildings at a 45 degree angle to any of the sides. The drifts were reduced significantly when the flow was normal to any of the sides. Simulated flow directions were based on meteorological wind rose data. Field verification of the amount and extent of the drifts has not been completed.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1982
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Government publications categories.
Proceedings Of The Annual Eastern Snow Conference
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Author :
language : en
Publisher:
Release Date : 1997
Proceedings Of The Annual Eastern Snow Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Snow categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1982
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Government publications categories.
Proceedings Of The Western Snow Conference
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Author :
language : en
Publisher:
Release Date : 1997
Proceedings Of The Western Snow Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Snow categories.
Crrel Technical Publications
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Author : Cold Regions Research and Engineering Laboratory (U.S.)
language : en
Publisher:
Release Date : 1981
Crrel Technical Publications written by Cold Regions Research and Engineering Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Engineering categories.