High-order overset interpolation within an OVERFLOW solution

Norman F. Foster, Ralph W. Noack

Research output: Contribution to conferencePaperpeer-review

7 Scopus citations


High-order overset interpolation has been shown to increase solution accuracy in CFD calculations that utilize high order accurate inviscid flux discretization schemes. The purpose of this effort was to investigate the effect of high-order overset interpolation on the solution accuracy of vortex propagation within Overflow solutions. This was accomplished by adding the ability to compute high-order donor interpolation weights using Lagrangian polynomial to the Suggar++ overset grid assembly code. OVERFLOW 2.2 has been modified to accept these interpolants through the use of the DiRTlib library which can be linked to the code. Simple test cases are presented that demonstrate the operation of the new OVERFLOW 2.2/DiRTlib/Suggar++ system and reiterate the need for the use of high-order interpolants to maintain the intended order of accuracy. These cases are also constructed to demonstrate that standard tri-linear interpolation on increased number of fringe layers is not sufficient to maintain solution accuracy, and that the high-order interpolants are required.

Original languageEnglish (US)
StatePublished - 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: Jan 9 2012Jan 12 2012


Other50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Country/TerritoryUnited States
CityNashville, TN

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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