Sökning: WFRF:(Picano Francesco) >
Effect of convectiv...
Effect of convective schemes in wall-resolved and wall-modeled LES of compressible wall turbulence
-
- Vanna, Francesco De (författare)
- Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy.
-
- Baldan, Giacomo (författare)
- KTH,Datavetenskap
-
- Picano, Francesco (författare)
- Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy.;Univ Padua, Ctr Ateneo Studi & Att Spaziali Giuseppe Colombo C, Via Venezia 15, I-35131 Padua, Italy.
-
visa fler...
-
- Benini, Ernesto (författare)
- Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy.
-
visa färre...
-
Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy Datavetenskap (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
-
Ingår i: Computers & Fluids. - : Elsevier BV. - 0045-7930 .- 1879-0747. ; 250, s. 105710-
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The current study discusses how numerical schemes and discretization approaches affect wall-resolved and wall-modeled LES outcomes. A turbulent boundary layer setup over a flat plate in both super-and hypersonic conditions is used to illustrate the effect of different numerical discretization strategies. In particular, six convective methods are examined, as well as various degrees of hybridization between shock-capturing and centered approaches: The former introducing non-negligible numerical viscosity, the latter being virtually dissipation-free. The analysis reveals that injected numerical viscosity due to upwinding procedures consid-erably alters wall dynamics for both wall-resolved and especially wall-modeled arrangements. In particular, if low-order or pure shock-capturing schemes are used, wall modeling fails in heading the system dynamics due to a strong modulation of main turbulent features. Conversely, realistic turbulence patterns are recovered if hybrid and/or high-order shock-capturing methods are employed. Thus, the paper establishes criteria for selecting a suitable numerical setup in wall-modeled LES, providing suggestions for grid resolution levels and convective scheme selection/hybridization. An overview perspective concerning numerical diffusion coupling with turbulent stresses in wall-resolved and wall-modeled LES is also provided.
Ämnesord
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- Large Eddy Simulations
- Wall modeling
- Turbulent boundary layer
- Compressible flows
- WENO
- TENO
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas