Experimental study on large wood filtration performance by herringbone water-sediment separation structure

摘要: A herringbone water-sediment separation structure (hereinafter referred to as “herringbone structure”) has been shown be effective in separating coarse inorganic debris; however, less is known regarding the large wood (LW) filtration effect this structure. This paper presents preliminary research on of based physical model tests. The results show that exhibited performance size segregation, with a 100% component rate for LW diameter (D) larger than ribbed beam opening width (a). total also exceeded 80% when Fraud number (Fr) 2.64 and increased increase Fr. After exceeding Fr max, would decreased due overflow. Beside flow condition, parameters influence significantly rate. We attempt explain process via particle contact trajectory movement trajectory. inclined angle (γ) contributed most variation influencing coincidence high sensitivity coefficient (θ) under relatively low Fr conditions implies remarkable influences effects by causing clogging problem. (a) together influenced segregation performance.