|
This article is cited in 4 scientific papers (total in 4 papers)
MODELS IN PHYSICS AND TECHNOLOGY
Numerical simulation of ice accretion in FlowVision software
K. E. Sorokina, P. M. Byval'tsevb, A. A. Aksenovc, S. V. Zhluktovc, D. V. Savitskiyc, A. A. Babulind, V. I. Shevyakovd a «NEP» LLC, 7 Nobelja st., territory of innovation center Skolkovo, Moscow, 125373, Russia
b «TESIS» LLC, off. 705, 18 Unnatov st., Moscow, 127083, Russia
c Joint Institute for High Temperatures RAS, 13 Izhorskaya st., Moscow, 125412, Russia
d JSC Sukhoi Civil Aircraft, 26 Leninskaya Sloboda st., Moscow, 115280, Russia
Abstract:
Certifying a transport airplane for the flights under icing conditions requires calculations aimed at definition of the dimensions and shapes of the ice bodies formed on the airplane surfaces. Up to date, software developed in Russia for simulation of ice accretion, which would be authorized by Russian certifying supervisory authority, is absent. This paper describes methodology IceVision recently developed in Russia on the basis of software FlowVision for calculations of ice accretion on airplane surfaces.
The main difference of methodology IceVision from the other approaches, known from literature, consists in using technology Volume Of Fluid (VOF — volume of fluid in cell) for tracking the surface of growing ice body. The methodology assumes solving a time-depended problem of continuous grows of ice body in the Euler formulation. The ice is explicitly present in the computational domain. The energy equation is integrated inside the ice body. In the other approaches, changing the ice shape is taken into account by means of modifying the aerodynamic surface and using Lagrangian mesh. In doing so, the heat transfer into ice is allowed for by an empirical model.
The implemented mathematical model provides capability to simulate formation of rime (dry) and glaze (wet) ice. It automatically identifies zones of rime and glaze ice. In a rime (dry) ice zone, the temperature of the contact surface between air and ice is calculated with account of ice sublimation and heat conduction inside the ice. In a glaze (wet) ice zone, the flow of the water film over the ice surface is allowed for. The film freezes due to evaporation and heat transfer inside the air and the ice. Methodology IceVision allows for separation of the film. For simulation of the two-phase flow of the air and droplets, a multi-speed model is used within the Euler approach. Methodology IceVision allows for size distribution of droplets. The computational algorithm takes account of essentially different time scales for the physical processes proceeding in the course of ice accretion, viz., air-droplets flow, water flow, and ice growth. Numerical solutions of validation test problems demonstrate efficiency of methodology IceVision and reliability of FlowVision results.
Keywords:
ice accretion, super-cooled water droplets, airplane surface, collection efficiency.
Received: 20.09.2019 Revised: 29.11.2019 Accepted: 02.12.2019
Citation:
K. E. Sorokin, P. M. Byval'tsev, A. A. Aksenov, S. V. Zhluktov, D. V. Savitskiy, A. A. Babulin, V. I. Shevyakov, “Numerical simulation of ice accretion in FlowVision software”, Computer Research and Modeling, 12:1 (2020), 83–96
Linking options:
https://www.mathnet.ru/eng/crm774 https://www.mathnet.ru/eng/crm/v12/i1/p83
|
|