**Organizers**__CHAIR:__**Kiris, Cetin**(NASA Ames) PID: W-001**Larsson**, Johan (U Maryland) PID: W-002**Slotnick**, Jeffrey (Boeing) PID: W-003**Taylor**, Nigel (MBDA) PID: W-004

**Members****Alonso**, Juan (Stanford) PID: W-005**Amali Uthuman**, Mohamed Yousuf (Boeing) PID: W-006**Andersson**, Mans (KTH) PID: W-007**Angelino**, Matteo (U Leicester) PID: W-008**Azevedo**, Joao (Inst de Aeronautica e Espaco) PID: W-009**Batten**, Paul (Metacomp Technologies) PID: W-010**Brionnaud**, Ruddy (Dassault Systemes) PID: W-011**Cary**, Andrew (Boeing) PID: W-012**Chen**, Hudong (Dassault Systemes) PID: W-013**Cheng**, Wan (KAUST) PID: W-014**Cimpoeru**, Andrei (DucaTechs) PID: W-015**Degrigny**, Johan (CERFACS) PID: W-016**Duda**, Ben (Dassault Systemes) PID: W-017**Emory**, Michael (Cascade Technologies, Inc.) PID: W-018**Fernandes**, Luis (NASA Ames) PID: W-019**Ghate**, Aditya (NASA Ames) PID: W-020**Goc**, Konrad (Stanford) PID: W-021**Gomez**, Samuel (Barcelona Supercomputing Center) PID: W-022**Gurram**, Harika (U Texas) PID: W-023**Hayat**, Imran (U Pennsylvania) PID: W-024**Hirsch**, Charles (Numeca International) PID: W-025**Hu**, Xiaohan (U Pennsylvania) PID: W-026**Imamura**, Taro (U Tokyo) PID: W-027**Iyer**, Prahladh (National Institute of Aerospace/NASA Langley) PID: W-028**Jansen**, Ken (U Colorado, Boulder) PID: W-029**Jansson**, Johan (KTH / Icarus Digital Math) PID: W-030**Kambrath**, Prasanth (Boeing) PID: W-031**Koenig**, Benedikt (Dassault Systemes) PID: W-032**Laskowski**, Gregory (Dassault Systemes) PID: W-033**Lehmkuhl**, Oriol (Barcelona Supercomputing Center) PID: W-034**Lohry**, Mark (Princeton) PID: W-035**Lozano-Duran**, Adrian (MIT) PID: W-036**Molina**, Eduardo (Stanford) PID: W-037**Nawani**, Shikshit (College of Engineering Roorkee) PID: W-038**Park**, George (U Pennsylvania) PID: W-039**Pereira**, Godwin (Wipro Limited) PID: W-040**Rapaka**, Narsimha (KAUST) PID: W-041**Samtaney**, Ravi (KAUST) PID: W-042**Sengupta**, Kaustav (Boeing) PID: W-043**Slaughter**, James (Imperial College London) PID: W-044**Thiry**, Olivier (Numeca International) PID: W-045**Vatsa**, Veer (NASA Langley Research Center) PID: W-046**Wang**, Z. J. (U Kansas) PID: W-047**Yao**, Yufeng (U West of England) PID: W-048

**Key Questions**- How sensitive are the integrated forces and moments (e.g. lift, drag, pitching moment coefficients) to the computational grid? (a) Will we be able to show convincing convergence with respect to the grid? (b) Can we define a credible process for verifying that the results are sufficiently converged, and what exactly would that process be?
- How do we handle the very thin boundary layer at the leading edge in a sufficiently accurate yet affordable manner?
- Will some kind of implicit time-stepping be necessary at realistic Reynolds and Mach numbers?
- What are the factors limiting accuracy and/or computational cost, and what is the estimated gain (in accuracy and/or cost) from improvements to each factor?
- Relevance of tripping used on the wing. Does tripping need to be explicitly represented, or numerical transition is sufficient?
- With the fuselage mounted on the tunnel wall, how important is it to characterize the tunnel boundary layer?

**Documents**- Alternative Test Case 3: Three-Element 30P-30N Airfoil is available on the Test Cases Page.

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Recent significant updates:

01/04/2021 - Initial PID assignment

**Responsible NASA Official:**
Christopher Rumsey

**Page Curator:**
Christopher Rumsey

**Last Updated:** 01/12/2021