Development of an Advanced Turbulence Model for Unsteady Complex Turbulent Flow Fields Considering the Characteristics of Near-Wall Turbulent Vortex Structures

• Project/Area Number: 24560197
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Kyushu University
• Principal Investigator: ABE Ken-ichi 九州大学, 工学(系)研究科(研究院), 教授 (20315104)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 数値流体力学 / 乱流モデリング / ラージ・エディ・シミュレーション / LES/RANSハイブリッドモデル / 非等方ＳＧＳモデル

Outline of Final Research Achievements

An improved subgrid-scale (SGS) model was proposed by combining an isotropic linear eddy-viscosity term with an extra anisotropic term. This model has no serious negative effects on the computational stability under coarse grid conditions. Furthermore, using this SGS model, the present LES/RANS model can successfully cover a much wider range of flow domain by LES compared with the model previously proposed by our group.

Research Products

• [Journal Article] An Advanced Switching Parameter for a Hybrid LES/RANS Model Considering the Characteristics of Near-Wall Turbulent Length Scales (2014)
  • Author(s): Ken-ichi ABE
  • Journal Title: Theoretical and Computational Fluid Dynamics Volume: 28 Issue: 5 Pages: 499-519
  • DOI: 10.1007/s00162-014-0328-3
  • NAID: 120006950901
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] An Investigation of SGS-Stress Anisotropy Modeling in Complex Turbulent Flow Fields (2014)
  • Author(s): Ken-ichi ABE
  • Journal Title: Flow, Turbulence and Combustion Volume: Vol. 92 Pages: 503-525
  • NAID: 120006952140
  • Peer Reviewed
• [Journal Article] Toward the development of an anisotropy-resolving subgrid-scale model for large eddy simulation (2014)
  • Author(s): Tadashi OHTSUKA and Ken-ichi ABE
  • Journal Title: Journal of Fluid Science and Technology Volume: 9 Issue: 1 Pages: JFST0004-JFST0004
  • DOI: 10.1299/jfst.2014jfst0004
  • NAID: 130003393093
  • ISSN: 1880-5558
  • Peer Reviewed
• [Journal Article] On the Role of an Anisotropy-Resolving Extension Term for a Subgrid-Scale Model in Near-Wall Turbulence (2013)
  • Author(s): Tadashi OHTSUKA and Ken-ichi ABE
  • Journal Title: Journal of Computational Science and Technology Volume: Vol. 7 Pages: 410-425
  • Peer Reviewed
• [Journal Article] An Improved Anisotropy-Resolving Subgrid-Scale Model with the Aid of a Scale-Similarity Modeling Concept (2013)
  • Author(s): Ken-ichi ABE
  • Journal Title: International Journal of Heat and Fluid Flow Volume: Vol. 39, Pages: 42-52
  • DOI: 10.1016/j.ijheatfluidflow.2012.12.001
  • NAID: 120006952142
  • Peer Reviewed
• [Presentation] Application of a Hybrid LES/RANS Model Using an Anisotropiy-Resolving SGS Model to Turbulence around an Airfoil (2015)
  • Author(s): Osamu Uruma, Hisashi Kisara and Ken-ichi Abe
  • Organizer: ASME-JSME-KSME Joint Fluids Engineering Conference 2015
  • Place of Presentation: Seoul
  • Year and Date: 2015-07-26 – 2015-07-31
  • Invited
• [Presentation] Performance of an Anisotropy-Resolving Subgrid-Scale Model for Adverse Pressure-Gradient Boundary-Layer Flow (2015)
  • Author(s): Masataka Takahashi, Hisashi Kisara and Ken-ichi Abe
  • Organizer: The Asian Symposium on Computational Heat Transfer and Fluid Flow - 2015
  • Place of Presentation: Busan
  • Year and Date: 2015-06-21 – 2015-06-24
• [Presentation] Progress of an Anisotropy-Resolving Subgrid-Scale Model for Predicting Near-Wall Turbulence under Coarse Grid-Resolution Conditions (2015)
  • Author(s): Ken-ichi Abe
  • Organizer: The Asian Symposium on Computational Heat Transfer and Fluid Flow - 2015
  • Place of Presentation: Busan
  • Year and Date: 2015-06-21 – 2015-06-24
  • Invited
• [Presentation] On the Effect of an Anisotropy-Resolving Subgrid-Scale Model on Turbulent Vortex Motions (2014)
  • Author(s): Ken-ichi ABE and Tadashi OHTSUKA
  • Organizer: 10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
  • Place of Presentation: Marbella
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] An Improvement of Hybrid LES/RANS Model for Complex Turbulence with the Aide of an Anisotropy-Resolving Subgrid-Scale Model (2013)
  • Author(s): Osamu URUMA, Hisashi KIHARA and Ken-ichi ABE
  • Organizer: Proceedings of 29th International Symposium on Space Technology and Science
  • Place of Presentation: Nagoya
• [Presentation] Performance of an Anisotropy-Resolving Subgrid-Scale Model for Complex Turbulence with Massive Flow Separation (2013)
  • Author(s): Tadashi OHTSUKA and Ken-ichi ABE
  • Organizer: Proceedings of IUTAM Symposium on Vortex Dynamics: Formation, Structure and Function
  • Place of Presentation: Fukuoka
• [Presentation] On the Role of an Anisotropy-Resolving Extra Term for a Subgrid-Scale Model in Near-Wall Turbulence (2012)
  • Author(s): Tadashi OHTSUKA and Ken-ichi ABE
  • Organizer: Proceedings of International Computational Mechanics Symposium
  • Place of Presentation: Kobe
• [Remarks] 九州大学研究者情報
  • URL: http://hyoka.ofc.kyushu-u.ac.jp/search/faculty2_j.cgi?ID=K001413