FUN3D Analyses in Support of the Second Aeroelastic Prediction Workshop

This paper presents the computational aeroelastic results generated in support of the second Aeroelastic Prediction Workshop for the Benchmark Supercritical Wing (BSCW) configurations and compares them to the experimental data. The computational results are obtained using FUN3D, an unstructured grid ReynoldsAveraged Navier-Stokes solver developed at NASA Langley Research Center. The analysis results include aerodynamic coefficients and surface pressures obtained for steady-state, static aeroelastic equilibrium, and unsteady flow due to a pitching wing or flutter prediction. Frequency response functions of the pressure coefficients with respect to the angular displacement are computed and compared with the experimental data. The effects of spatial and temporal convergence on the computational results are examined.

[1]  P. Roe.  Approximate Riemann Solvers, Parameter Vectors, and Difference Schemes , 1997 .

[2]  Jamshid Samareh-Abolhassani,et al.  Unstructured Grids on NURBS Surfaces , 1993 .

[3]  Carol D. Wieseman,et al.  A Summary of Data and Findings from the First Aeroelastic Prediction Workshop , 2012 .

[4]  M Schuster David.  Aerodynamic Measurements on a Large Splitter Plate for the NASA Langley Transonic Dynamics Tunnel , 2001 .

[5]  Christopher L. Rumsey,et al.  CFL3D Version 6.4-General Usage and Aeroelastic Analysis , 2006 .

[6]  David P. Lockard,et al.  Re-evaluation of an Optimized Second Order Backward Difference (BDF2OPT) Scheme for Unsteady Flow Applications , 2010 .

[7]  Jennifer Heeg,et al.  Overview and Lessons Learned from the Aeroelastic Prediction Workshop , 2013 .

[8]  Adam Jirasek,et al.  Plans and Example Results for the 2nd AIAA Aeroelastic Prediction Workshop , 2015 .

[9]  P. Spalart.  A One-Equation Turbulence Model for Aerodynamic Flows , 1992 .

[10]  Walter A. Silva,et al.  Evaluation of linear, inviscid, viscous, and reduced-order modelling aeroelastic solutions of the AGARD 445.6 wing using root locus analysis , 2014 .

[11]  S. Pirzadeh.  Advanced Unstructured Grid Generation for Complex Aerodynamic Applications , 2013 .

[12]  John T. Batina,et al.  Unsteady Transonic Flow Calculations for Realistic Aircraft Configurations , 1989 .

[13]  Robert T. Biedron,et al.  Recent Enhancements To The FUN3D Flow Solver For Moving-Mesh Applications , 2009 .

[14]  V. Venkatakrishnan.  Convergence to steady state solutions of the Euler equations on unstructured grids with limiters , 1995 .

[15]  Jamshid A. Samareh,et al.  Discrete Data Transfer Technique for Fluid-Structure Interaction , 2007 .

[16]  Elizabeth M. Lee-Rausch,et al.  Rotor Airloads Prediction Using Unstructured Meshes and Loose CFD/CSD Coupling , 2008 .