An analytical approach to grid sensitivity analysisSensitivity analysis in Computational Fluid Dynamics with emphasis on grids and surface parameterization is described. An interactive algebraic grid-generation technique is employed to generate C-type grids around NACA four-digit wing sections. An analytical procedure is developed for calculating grid sensitivity with respect to design parameters of a wing section. A comparison of the sensitivity with that obtained using a finite-difference approach is made. Grid sensitivity with respect to grid parameters, such as grid-stretching coefficients, are also investigated. Using the resultant grid sensitivity, aerodynamic sensitivity is obtained using the compressible two-dimensional thin-layer Navier-Stokes equations.
Document ID
19920044407
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sadrehaghighi, Ideen (Old Dominion University Norfolk, VA, United States)
Smith, Robert E. (NASA Langley Research Center Hampton, VA, United States)
Tiwari, Surendra N. (Old Dominion University Norfolk, VA, United States)