Numerical investigation of the flow field around \(65^\circ\) delta wing using the unstructured code zCFD

Authors: A. Cimpoeru (CFMS), J. Appa (Zenotech) and D. Standingford (Zenotech)

December 2014

Abstract

In the present study the flow field around \(65^\circ\) delta wing is investigated using the unstructured density based solver zCFD. The simulations were carried out by solving the steady state RANS equations using the k-ω SST turbulence model at :math:‘13.3^circ’ flow angle for :math: ‘Re=6.0e06’ (NASA) and :math:’Re=3.0e06’ based on MAC. Within this analysis the numerical solutions are compared against wind tunnel results performed at NASA and DLR.

Geometry Specification

The geometry has been generated using the analytical definition available in the reference (Chu and Luckring). For the present study two sets of simulations were performed: (1) Comparison against the experiment performed at NASA and (2) Comparison against the experiment performed at DLR as part of the VFE 2 project.

alternate text

Delta wing geometry

Results

Steady state RANS, SOLAR - octree mesh (30M cells), \(Mach=0.4\), \(Re=6.0e06\) (based on MAC = 0.3268 m)

\(\circ\) Large Radius - Validation against NASA Wind Tunnel Experiment

alternate text

\(\circ\) Sharp Radius - Validation against NASA Wind Tunnel Experiment

alternate text

\(\circ\) Large (right) and Sharp radius (left)

alternate text

See also

Experimental data and geometry specification (4 volumes available on NASA Technical Reports Server)

DLR Project VFE-2

J Chu and J M Luckring. Experimental Surface Pressure Data Obtained on 65 degrees Delta Wing Across Reynolds Number and Mach Number Ranges. NASA TM 4645, 1996

R M Cummings and A Schute. Detached-Eddy Simulation od the vortical flow field about the VFE-2 delta wing. Aerospace Science and Technology 24 (2013) 66-76

R Konrath, C Klein and A Schroder. PSP and PIV investigations on the VFE-2 configuration in sub- and transonic flow. Aerospace Science and Technology 24 (2013) 22-31

Delta Wing Sharp Radius Notebook