Abstract
Study of atmospheric ice accretion on a non-rotating vertical circular cylindrical object was carried out at dry and wet ice conditions. Both numerical and experimental techniques were used during this study. 3D numerical study was carried out using computational fluid dynamics based approach, whereas experimental study was carried out at Cryospheric Environmental Simulator ‘CES’ in Shinjo, Japan. A good agreement was found between experimental and numerical results. The dimensions of the cylindrical object used to measure the atmospheric ice load on structures along this study, were selected as per the ISO12494 standard. Results provide useful information about ice growth and intensity along circular cylindrical objects at different atmospheric temperatures. This research work also provides a useful base for further investigation of atmospheric ice accretion on structures particularly circular power network cables, & tower masts installed in the cold regions.
Highlights
Human activities are increasingly extending in the cold regions of high north, where atmospheric icing will make human inconveniences, but can affect the human activities & safety, significantly
This paper describes the study of atmospheric ice accretion on a non-rotating vertical circular cylindrical rod, having the dimensions as per ISO 12494 standard, at both dry and wet ice conditions
The results obtained from numerical simulations were compared with the experimental results, obtained from experimental expedition of atmospheric icing research team of Narvik University College (NUC) conducted at cryospheric environment simulator (CES), Japan
Summary
Human activities are increasingly extending in the cold regions of high north , where atmospheric icing will make human inconveniences, but can affect the human activities & safety, significantly. The largest ice loads ever recorded on a power line is 305 Kg/m. This was recorded on a 22 kV overhead line in Voss, Norway on April 18, 1961 [3]. Numerical study of atmospheric ice accretion on structures includes the computation of mass flux of icing particles as well as determination of the icing conditions [4]. This can be numerically simulated by means of integrated thermo-fluid dynamic models. Most developments in the numerical modeling of ice accretion has been focused on aerospace industry and very few improvements has been reported in the research field of on-
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