Open AccessEffects of a Splitter and an Endplate on Flow-induced Vibration Characteristics of Cantilevered Rectangular and D-section Prisms
Author(s) -
La Ode Ahmad Barata,
Takahiro Kiwata,
Toru Kono,
Takahiro Ueno
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/816/1/012012
Subject(s) - prism , splitter plate , splitter , amplitude , optics , vortex shedding , cantilever , vibration , wake , flow (mathematics) , vortex , materials science , mechanics , physics , structural engineering , acoustics , composite material , turbulence , engineering , reynolds number
The effects of a splitter and an end plate on the flow-induced vibration characteristics of cantilevered rectangular and D-section prisms with the different finite lengths (aspect ratios L/H ) and depth ratios (side ratio D/H of 0.2 and 0.5) have been investigated in a water tunnel. In order to suppress the alternating vortex shedding in the wake of buff bodies, a splitter plate was installed behind the prisms with a small gap and sufficient length to prevent vortex shedding intrusion. Meanwhile, to maintain a two-dimensional flow structure, an endplate was attached to the prism tip end. Mounting the splitter plate enhanced the response amplitude for all prisms. In this case, interferences of amplitude signal spectra for the period of displacement vanished on the prism with a side ratio of 0.5 yielding a uniform waveform on response amplitude. The attached endplate does not take an important role in enhancing the dynamic response of the prisms with a side ratio of 0.5 but it suppressed the response amplitude of prisms with D/H = 0.2.