A novel simple cut-cell method for robust flow simulation on cartesian grids

Motoshi Harada; Yoshiharu Tamaki; Yuichi Takahashi; Taro Imamura

doi:10.2514/6.2016-0601

A novel simple cut-cell method for robust flow simulation on cartesian grids

Motoshi Harada, Yoshiharu Tamaki, Yuichi Takahashi, Taro Imamura

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

A novel simple cut-cell method for hierarchical Cartesian grid is proposed. Small or split cells which often appear in the cut-cell method are eliminated by a simple projection strategy. In order to evaluate the capability of this method, two-dimensional flow is solved, and the results are compared with the immersed boundary method (IBM) on Cartesian grids. The computational results of inviscid and viscous laminar flow simulations show that the new cut-cell method is superior to IBM in terms of grid convergence of drag force and separation points. The method is extended to turbulent flow simulations using Spalart-Allmaras wall function. The cut-cell method predicts the skin friction accurately, compared to the IBM.

Original language	English
Title of host publication	54th AIAA Aerospace Sciences Meeting
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)	9781624103933
DOIs	https://doi.org/10.2514/6.2016-0601
Publication status	Published - 2016
Externally published	Yes
Event	54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States Duration: 2016 Jan 4 → 2016 Jan 8

Publication series

Name	54th AIAA Aerospace Sciences Meeting
Volume	0

Other

Other	54th AIAA Aerospace Sciences Meeting, 2016
Country	United States
City	San Diego
Period	16/1/4 → 16/1/8

ASJC Scopus subject areas

Aerospace Engineering

Access to Document

10.2514/6.2016-0601

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A novel simple cut-cell method for robust flow simulation on cartesian grids. / Harada, Motoshi; Tamaki, Yoshiharu; Takahashi, Yuichi; Imamura, Taro.

54th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc, AIAA, 2016. (54th AIAA Aerospace Sciences Meeting; Vol. 0).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Harada, M, Tamaki, Y, Takahashi, Y & Imamura, T 2016, A novel simple cut-cell method for robust flow simulation on cartesian grids. in 54th AIAA Aerospace Sciences Meeting. 54th AIAA Aerospace Sciences Meeting, vol. 0, American Institute of Aeronautics and Astronautics Inc, AIAA, 54th AIAA Aerospace Sciences Meeting, 2016, San Diego, United States, 16/1/4. https://doi.org/10.2514/6.2016-0601

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AB - A novel simple cut-cell method for hierarchical Cartesian grid is proposed. Small or split cells which often appear in the cut-cell method are eliminated by a simple projection strategy. In order to evaluate the capability of this method, two-dimensional flow is solved, and the results are compared with the immersed boundary method (IBM) on Cartesian grids. The computational results of inviscid and viscous laminar flow simulations show that the new cut-cell method is superior to IBM in terms of grid convergence of drag force and separation points. The method is extended to turbulent flow simulations using Spalart-Allmaras wall function. The cut-cell method predicts the skin friction accurately, compared to the IBM.

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