This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical Studies for De-Icing Validation
Technical Paper
2005-01-1883
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The de-icing process of the windscreen is a demanding problem in car climatization. In the first stages of the development procedure of air ducts, the numerical simulation plays an important role due to economy of time and money. Unfortunately, the available numerical methods for the generation of the computational grid and the simulation of the de-icing process are very time consuming and are complicated in handling. Therefore normally the quality of the de-icing process is evaluated with simplified simulation procedures or even with measurements late in the design process and necessary modifications are again time and cost consuming.
The aim of this paper is to describe new methods for the de-icing simulation that will reduce meshing and calculation time by showing accurate results. It can be shown that a simulation of the entire de-icing process, including heat transfer through the windscreen and ice melting, is necessary to check the status of ice thickness in the relevant areas of the windscreen at a certain time, defined by U.S and European standards. These methods need to be applied to check if the standards for de-icing process are reached. A comprehensive simulation programme was performed to identify the best way to achieve accurate results in time which fit in the development processes. Simulations of test cases are presented in this paper and it can be shown that the new strategies enable the optimization of components, relevant for de-icing, in an acceptable time, which reduce the use of prototypes saving money and time.
Recommended Content
Authors
Citation
Wolfahrt, J., Baier, W., Wiesler, B., and Moshammer, T., "Numerical Studies for De-Icing Validation," SAE Technical Paper 2005-01-1883, 2005, https://doi.org/10.4271/2005-01-1883.Also In
References
- Basara B. Jaklirlic S. Przulj V. “Vortex Shedding Flows Computed Using a New Hybrid Turbulence Model” 8th Int. Symp. On Flow Modeling and Turbulence Measurements Tokyo, Japan 2001
- “Defrosting and demisting system of glazed surface of motor vehicles” 21 Dec. 1977
- Marcy R. Hager J. Doppelbauer C. “Optimization of Vehicle Warm-up Using Simulation Tools” VTMS5 Nashville, Tennessee, USA 2001
- Potthoff J. “Future Road Simulation Techniques in the IVK/FKFS Wind Tunnels” Progress in Vehicle Aerodynamics - Advanced Experimental Techniques, 2. Short Course at FKFS Stuttgart 2000
- SAE Recommended Practice J902 (SAE 902 ) “Passenger Car Windshield Defrosting Systems” FMVSS 103-104 August 1964
- Skea A. F. Harrison R. D. Baxendale A. J. Fletcher, D. “Comparison of CFD Simulation Methods and Thermal Imaging with Windscreen Defrost Pattern” VTMS5 Nashville, Tennessee, USA 2001
- SWIFT CFD Solver v3.3 Manual AVL LIST GmbH Graz, Austria 2004
- Tastan Z. Capellmann C. Matthes M. “CFD-Simulation improve De-Icing” ATZ 105 4 338 344 2003
- Taxis-Reischl B. Morgenstern S. Brotz F. Rersch T. „Progress in the Optimized Application of Simulation Tools in Vehicle Air Conditioning” VTMS5 Nashville, Tennessee, USA 2001
- Tsai C-F. Nixon G. „Transient Temperature Distribution of a Multilayer Composite Wall with Effects of Internal Thermal Radiation and Conduction” Num. Heat Transfer 10 95 101 1986
- Wachsmann E. Nadler R. Schierl K. „Simulation of De-icing Process of the Audi A4 with SWIFT” proceedings AVL AST Usermeeting Graz 2003
- Wiedemann J. Kuthada T. “Interaction of External and Internal Flows” Progress in Aerodynamic II-Thermo-Management Wiedemann Huchi Expert Verlag 2002
- Wolfahrt J. “Report of the 2 nd Reseach Period” Internal Report - Project A2_T6, VIF - Kompetenz-zentrum - Das virtuelle Fahrzeug - Forschungsges Graz, Austria July 2004