Wind and Structures

  • 제8권1호
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  • Pages.49-60
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  • 2005
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Large eddy simulation of the tornado-structure interaction to determine structural loadings

  • Panneer Selvam, R. (Department of Civil Engineering, University of Arkansas) ;
  • Millett, Paul C. (Department of Civil Engineering, University of Arkansas)
  • 투고 : 2003.09.18
  • 심사 : 2004.11.22
  • 발행 : 2005.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

A tornado changes its wind speed and direction rapidly; therefore, it is difficult to study the effects of a tornado on buildings in a wind tunnel. The status of the tornado-structure interaction and various models of the tornado wind field found in literature are surveyed. Three dimensional computer modeling work using the turbulence model based on large eddy simulation is presented. The effect of a tornado on a cubic building is considered for this study. The Navier-Stokes (NS) equations are approximated by finite difference method, and solved by an semi-implicit procedure. The force coefficients are plotted in time to study the effect of the Rankine combined vortex model. The tornado is made to translate at a $0^{\circ}$ and $45^{\circ}$ angle, and the grid resolution is refined. Some flow visualizations are also reported to understand the flow behavior around the cube.

키워드

참고문헌

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피인용 문헌

  1. Swirl ratio effects on tornado vortices in relation to the Fujita scale vol.11, pp.4, 2008, https://doi.org/10.12989/was.2008.11.4.291
  2. An IB-LBM investigation into the aerodynamic coefficients in relation to the rotation intensity of a tornado-like wind 2016, https://doi.org/10.1016/j.camwa.2016.07.016
  3. A two-dimensional IB-LBM framework combined with re-tailored RCVM for assessing the rotation intensity of a tornadic wind over a building configuration vol.131, 2017, https://doi.org/10.1016/j.engstruct.2016.10.016
  4. Visualization of tornado-like vortex interacting with wide tornado-break wall vol.18, pp.2, 2015, https://doi.org/10.1007/s12650-014-0245-y
  5. The variation in the maximum loading of a circular cylinder impacted by a 2D vortex with time of impact vol.58, 2015, https://doi.org/10.1016/j.jfluidstructs.2015.07.005
  6. Characteristics of internal pressures and net local roof wind forces on a building exposed to a tornado-like vortex vol.112, 2013, https://doi.org/10.1016/j.jweia.2012.11.005
  7. Rankine combined vortex interaction with a rectangular prism vol.29, pp.1, 2015, https://doi.org/10.1080/10618562.2015.1010524
  8. Defining the vortex loading period and application to assess dynamic amplification of tornado-like wind loading vol.63, 2016, https://doi.org/10.1016/j.jfluidstructs.2016.03.004
  9. A comparison of the forces on dome and prism for straight and tornadic wind using CFD model vol.26, pp.6, 2018, https://doi.org/10.12989/was.2018.26.6.369