Boundary conditions for carrying out tests under conditions of artificial icing
Ye. V. Horokhov, V. M. Vasylev, V. I. Koval, A. M. Alyokhin
Donbas National Academy of Civil Engineering and Architecture
Annotation: The paper analyzes the similarity conditions for pickup factor simulation. There have been determined the similarity conditions while studying the cloud drops deposition from an air flow on similar bodies. The analysis has been done and the similarity parameters determining the conditions of a liquid water film existence and behavior on the surface-water or ice-water boundaries have been formulated. There have been examined the data on speed, height, and time of icing effect on a full-scale design and meteorological conditions affecting the structure. There have been derived a generalized equation for simulating the final ice thickness distribution within the pickup area, the system of equations in which the scale factors combinations obtained with the use of similarity conditions meet the requirements of the full-scale design. There have been obtained the scale factors depending on the wind velocity, a structure size under testing, kinematical air viscosity, the cloud spectrum diameter, test time under artificial icing conditions, drops quantity per the air volume unit, drops density in a unit of air volume. There have been also obtained parameters for full-scale and pipe tests a rational scheme for solving the system of equations (1.3).
Keywords: similarity, icing, power system, cloud drops, large-scale tests, pipe tests, scale factors, inertia criterion, the Strouhal number, the Nusselt number, a model.
Pages: 97-102.
Link for citation: Horokhov, Ye. V.; Vasylev, V. M.; Koval, V. I. [et al.]. Boundary conditions for carrying out tests under conditions of artificial icing. – Text : electronic. – In: Metal Constructions. – 2007. – Vol. 13, N 2. – Р. 97-102. – URL: https://donnasa.ru/publish_house/journals/mk/2007-2/03_gorohov_vasylev_koval_alehin.pdf (date of access: 03.07.2024). (in Russian)
Vol. 13, N 2 (2007)Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture