A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Outdoors modelling of snowdrift at SANAE IV Research Station, Antarctica
AbstractThis paper describes the experimental modelling procedure and results to evaluate the snowdrift characteristics surrounding the research station of the South African National Antarctic Expedition, SANAE IV. For this purpose a 1:25 scale model of the research station was constructed and mounted on a large flat snow covered area in the vicinity of the base. The wind profiles of the prevailing winds were measured with a 6-m wind mast positioned near the base model and the characteristic surface roughness and shear velocity functions were derived and analysed. Snow buildup was measured behind the scale model as well as the existing research station and a comparison was evaluated between the two, based on a similarity analysis. The similarity analysis method and results are presented in this paper. It is found that the surface roughness and shear velocity functions derived from the wind velocity data compares favourably with available results in literature for similar measurements of wind profiles in drifting snow conditions. From these results an inner law velocity relationship is established with additional parameters to account for the effects of surface roughness and saltating snow. It is further shown that the scaling parameters employed for the snowdrift modelling provide acceptable results when applied to outdoors modelling of snowdrifting.
Outdoors modelling of snowdrift at SANAE IV Research Station, Antarctica
AbstractThis paper describes the experimental modelling procedure and results to evaluate the snowdrift characteristics surrounding the research station of the South African National Antarctic Expedition, SANAE IV. For this purpose a 1:25 scale model of the research station was constructed and mounted on a large flat snow covered area in the vicinity of the base. The wind profiles of the prevailing winds were measured with a 6-m wind mast positioned near the base model and the characteristic surface roughness and shear velocity functions were derived and analysed. Snow buildup was measured behind the scale model as well as the existing research station and a comparison was evaluated between the two, based on a similarity analysis. The similarity analysis method and results are presented in this paper. It is found that the surface roughness and shear velocity functions derived from the wind velocity data compares favourably with available results in literature for similar measurements of wind profiles in drifting snow conditions. From these results an inner law velocity relationship is established with additional parameters to account for the effects of surface roughness and saltating snow. It is further shown that the scaling parameters employed for the snowdrift modelling provide acceptable results when applied to outdoors modelling of snowdrifting.
Outdoors modelling of snowdrift at SANAE IV Research Station, Antarctica
Beyers, J.H.M. (author) / Harms, T.M. (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 91 ; 551-569
2002-10-07
19 pages
Article (Journal)
Electronic Resource
English
Outdoors modelling of snowdrift at SANAE IV Research Station, Antarctica
| Online Contents | 2003
SANAE IV - Pride of Antarctica
British Library Online Contents | 2004
Snowdrift Design Guidance for the New South Pole Station
| British Library Conference Proceedings | 1999