Title :
CFD-RANS model validation of turbulent flow: A case study on MAAT airship
Author :
Yong Kang Chen ; Xu Zhang
Author_Institution :
Sch. of Eng. & Technol., Univ. of Hertfordshire, Hatfield, UK
Abstract :
The Computational Fluid Dynamic (CFD) has a wide application in aerodynamic design of airship. In CFD simulations, a turbulence model plays a significantly important role in accuracy and resource cost. In this paper, a configuration of MAAT airship was investigated with different turbulence models under various angles of attack. Three most widely used turbulence models, Standard Spalart-Almaras, Realizable k-ε and SST k-ω, were tested and compared. The resource consumption study was based on the benchmark of 3000 iterations. According to the results, it is proved that Spallart-Allmaras model is the best model for steady-state airship simulation.
Keywords :
Navier-Stokes equations; aerodynamics; aircraft; computational fluid dynamics; design engineering; shear turbulence; CFD-RANS model validation; MAAT airship; SST k-ω turbulence model; aerodynamic design; angles-of-attack; computational fluid dynamics; realizable k-ε turbulence model; standard Spalart-Almaras turbulence model; Atmospheric modeling; Computational modeling; Equations; Mathematical model; Numerical models; Standards; Viscosity; CFD; Comparison; MAAT Airship; Turbulence models;
Conference_Titel :
Modelling, Identification & Control (ICMIC), 2014 Proceedings of the 6th International Conference on
Conference_Location :
Melbourne, VIC
DOI :
10.1109/ICMIC.2014.7020761
