Grid-Adapted FUN3D Computations for the Second High Lift Prediction Workshop

Contributions of the unstructured Reynolds-averaged Navier-Stokes code FUN3D to the 2 nd AIAA CFD High Lift Prediction Workshop are described, and detailed comparisons are made with experimental data. Using workshop-supplied grids, results for the clean wing conguration are compared with results from the structured code CFL3D Using the same turbulence model, both codes compare reasonably well in terms of total forces and moments, and the maximum lift is similarly over-predicted for both codes compared to experiment. By including more representative geometry features such as slat and ap brackets and slat pressure tube bundles, FUN3D captures the general eects of the Reynolds number variation, but under-predicts maximum lift on workshop-supplied grids in comparison with the experimental data, due to excessive separation. However, when output-based, o-body grid adaptation in FUN3D is employed, results improve considerably. In particular, when the geometry includes both brackets and the pressure tube bundles, grid adaptation results in a more accurate prediction of lift near stall in comparison with the wind-tunnel data. Furthermore, a rotation-corrected turbulence model shows improved pressure predictions on the outboard span when using adapted grids.

[1]  S. Eisenstat,et al.  Variational Iterative Methods for Nonsymmetric Systems of Linear Equations , 1983 .

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

[3]  F. Menter.  Two-equation eddy-viscosity turbulence models for engineering applications , 1994 .

[4]  W. K. Anderson,et al.  An implicit upwind algorithm for computing turbulent flows on unstructured grids , 1994 .

[5]  J. Dacles-Mariani,et al.  Numerical/experimental study of a wingtip vortex in the near field , 1995 .

[6]  W. K. Anderson,et al.  Implicit/Multigrid Algorithms for Incompressible Turbulent Flows on Unstructured Grids , 1995 .

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

[8]  L Krist Sherrie,et al.  CFL3D User''s Manual (Version 5.0) , 1998 .

[9]  E. Nielsen,et al.  Aerodynamic design sensitivities on an unstructured mesh using the Navier-Stokes equations and a discrete adjoint formulation , 1998 .

[10]  David Anthony Venditti,et al.  Grid adaptation for functional outputs of compressible flow simulations , 2000 .

[11]  W. K. Anderson,et al.  Recent improvements in aerodynamic design optimization on unstructured meshes , 2001 .

[12]  Michael A. Park,et al.  Three-Dimensional Turbulent RANS Adjoint-Based Error Correction , 2003 .

[13]  D. Darmofal,et al.  An implicit, exact dual adjoint solution method for turbulent flows on unstructured grids , 2004 .

[14]  Elizabeth M. Lee-Rausch,et al.  Application of Parallel Adjoint-Based Error Estimation and Anisotropic Grid Adaptation for Three-Dimensional Aerospace Configurations , 2005 .

[15]  David L. Darmofal,et al.  Parallel Anisotropic Tetrahedral Adaptation , 2008 .

[16]  Michael Andrew Park,et al.  Anisotropic output-based adaptation with tetrahedral cut cells for compressible flows , 2008 .

[17]  M. Park,et al.  Output Based Grid Adaptation for Viscous Flow , 2009 .

[18]  Florian R. Menter,et al.  Correlation-Based Transition Modeling for Unstructured Parallelized Computational Fluid Dynamics Codes , 2009 .

[19]  Boris Diskin,et al.  Comparison of Node-Centered and Cell-Centered Unstructured Finite-Volume Discretizations: Inviscid Fluxes , 2011 .

[20]  Frédéric Alauzet,et al.  High-order sonic boom modeling based on adaptive methods , 2010, J. Comput. Phys..

[21]  Jan-Renee Carlson,et al.  Turbulent Output-Based Anisotropic Adaptation , 2010 .

[22]  Boris Diskin,et al.  Comparison of Node-Centered and Cell-Centered Unstructured Finite-Volume Discretizations: Inviscid Fluxes , 2011 .

[23]  Elizabeth M. Lee-Rausch,et al.  FUN3D and CFL3D Computations for the First High Lift Prediction Workshop , 2011 .

[24]  Ralf Rudnik,et al.  DLR Contribution to the First High Lift Prediction Workshop , 2011 .

[25]  Michael Long,et al.  Summary of the First AIAA CFD High Lift Prediction Workshop , 2011 .

[26]  Ralf Rudnik,et al.  EUROLIFT Test Case Description for the 2nd High Lift Prediction Workshop , 2012 .

[27]  Eric Laurendeau,et al.  NSMB contribution to the 2nd High Lift Prediction Workshop , 2014 .

[28]  Yves Allaneau,et al.  Contribution from Metacomp Technologies, Inc. to the Second High Lift Prediction Workshop , 2014 .

[29]  Peter A. Cavallo,et al.  CRUNCH CFD Calculations for HiLiftPW-2 with Discretization Error Predictions , 2014 .

[30]  Dimitri J. Mavriplis,et al.  NSU3D Results for the Second High-Lift Prediction Workshop , 2014 .

[31]  Ralf Rudnik,et al.  DLR Contribution to the 2nd High Lift Prediction Workshop , 2014 .

[32]  Deryl O. Snyder,et al.  Numerical Simulation of DLR-F11 High Lift Configuration from HiLiftPW-2 using STAR-CCM+ , 2014 .

[33]  K. Jansen,et al.  Finite Element Flow Simulations of the EUROLIFT DLR-F11 High Lift Configuration , 2014, 1402.6759.

[34]  Peter Eliasson.  Results from the 2nd AIAA CFD High Lift Prediction Workshop using Edge , 2014 .

[35]  Benedikt Koenig,et al.  Lattice-Boltzmann Flow Simulations for the HiLiftPW-2 , 2014 .

[36]  Omar D. Lopez,et al.  Detached-Eddy Simulation of a Wide-Body Commercial Aircraft in High-Lift Configuration , 2015 .

[37]  Antonis F. Antoniadis,et al.  Numerical Accuracy in RANS Computations of High-Lift Multi-element Airfoil and Aicraft Configurations , 2015 .

[38]  Dimitri J. Mavriplis,et al.  NSU3D Results for the Second AIAA High-Lift Prediction Workshop , 2015 .

[39]  Christopher L. Rumsey,et al.  Overview and Summary of the Second AIAA High-Lift Prediction Workshop , 2015 .

[40]  Christopher L. Rumsey,et al.  NASA Trapezoidal Wing Computations Including Transition and Advanced Turbulence Modeling , 2015 .

[41]  Shia-Hui Peng,et al.  Results from the Second AIAA CFD High-Lift Prediction Workshop Using Edge , 2015 .

[42]  Boris Diskin,et al.  Grid-Convergence of Reynolds-Averaged Navier-Stokes Solutions for Benchmark Flows in Two Dimensions , 2016 .

[43]  Dimitri J. Mavriplis,et al.  Discontinuous Galerkin Turbulent Flow Simulations of NASA Turbulence Model Validation Cases and High Lift Prediction Workshop Test Case DLR-F11 , 2016 .