000022579 001__ 22579
000022579 005__ 20170724144656.0
000022579 04107 $$aeng
000022579 046__ $$k2017-07-04
000022579 100__ $$aUchibori, Kazuaki
000022579 24500 $$aA solid-fluid coupling simulation for wind borne debris: auto-rotating flat plate and flying flat plate

000022579 24630 $$n7.$$p7th European and African Conference on Wind Engineering 
000022579 260__ $$bl'Association pour l'Ingénierie du Vent
000022579 506__ $$arestricted
000022579 520__ $$2eng$$aThis study investigates the behavior and the impacts of wind-borne debris under strong wind such as tornados or typhoons. Collisions of wind borne-debris cause huge loads on the local area of houses and buildings, that are quite larger than conventional wind load. As a result, the house has damaged and furthermore the damaged houses by debris attack successively generate secondary debris as a chain reaction. In this study, we propose the numerical model for an interaction between solid motion and fluid flow in order to predict the behavior of wind-borne debris and to capture the wake flow of the flying debris. This simulation model uses the fixed Cartesian grid system to solve a solid motion with 6DOF (six degrees of freedom) and a fluid flow for the resulting solid location on the fixed grid because we get rid of procedure of grid reconstruction according to moving objects. As a result, this approach makes it possible that plural number of wind borne debris fly with complicated trajectories in turbulent wind. We also present the collision model on the fixed Cartesian grid system. Next, we apply the present method to the rotating and flying flat plate. This flat plate means to imitate a shape of a roof tile and accordingly we can provide the fundamental data concerning the damage of houses due to the flying roof tile. For the numerical validation, we estimate the numerical results qualitatively and quantitatively in comparison with experimental results. Then, in order to evaluate the damage when wind-borne debris collide with a building and so on, we represent the debris behavior with 6DOF immediately before collision. Currently using these data, we can generally estimate the collision damages based on database of the flying debris test. However, in order to direct to higher performance of the numerical technique, this study also tries to obtain the impulse and the impact load in the process of collision of the wind-born debris to the wall of houses.

000022579 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022579 653__ $$a

000022579 7112_ $$a7th European and African Conference on Wind Engineering$$cLiège, BE$$d2017-07-04 / 2017-07-07$$gEACWE2017
000022579 720__ $$aUchibori, Kazuaki$$iTamura, Tetsuro
000022579 8560_ $$ffischerc@itam.cas.cz
000022579 8564_ $$s11034$$uhttps://invenio.itam.cas.cz/record/22579/files/116.pdf$$yOriginal version of the author's contribution in proceedings, id 116, section .
000022579 962__ $$r22493
000022579 980__ $$aPAPER