D - dentoid 中文 - EN166

dentoid adj.牙齒狀的。

denton
The water current flows over the top of the dentoid baffle to the hydraulic jump as additional momentum . while it is cooperated with a stilling basin , the flowing condition emerged in the basin may be improved greatly and the length and downstream water depth required by the basin can be decreased to a great extent . such an appliance may be also used to solve the problems of insufficiently dissipating water flow energy and aerating flow , which are often faced with those hydraulic engineering constraction as acted by high waterhead , great specific discharge and low froude number 本文通過齒墩頂部的擴散水舌所形成的附加射流，從上部射入水躍，即可改善消力池內的水流流態，又可降低第二共軛水深，減小水躍長度，增進水躍消能效果，同時還能解決大單寬、低佛勞德數條件下摻氣和消能不足的問題，試驗證實它是一種安全、經濟的消能工。
Using the model experiment data , the authors calculate the decreased percentage of water jump length , unit width hydraulic jump volume and the water depth downstream of the jump ; and also calculate the energy dissipation rate of dentoid baffle , it is concluded that the device of dentoid baffle can increase the energy dissipation rate of hydraulic jump theory and decrease the engineering cost 計算了新增齒墩設施的消能量，同時計算了新增齒墩設施的躍后水深、水躍長度和單寬水躍容積減少的百分數。結果表明，采用齒墩設施，可增進消能作用，并取得顯著的經濟效益，達到附加射流水躍理論所預期的效果。
The additional flow is formed by the device of dentoid baffle , and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests . based on the research results , the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle , the properties of flow under the condition that the device of denotid baffle is used with a stilling basin , the hydraulic computation about a stilling basin , the estimation of energy dissipation and its various affection factors , the mechanism and effect of energy dissipation , and distributions of velocity and pressure and aerating concentration , etc , have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed 文中利用齒墩設施實現附加射流，對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗，分析研究了中低佛勞德數條件下，齒墩墩頭的動水壓強及空化特性，齒墩設施與消力池聯合應用時的流態特性，消力池的水力計算，消能量的估算及其各種影響因素，消能機理和效果，消力池內的流速、壓強特性，摻氣濃度分布等水力學問題，并提出了實現附加射流齒墩設施的水力設計方法和步驟。
The principle of the choice of the parameters about the device of dentoid baffle and some research data have been given in the paper , and can be referenced in the early design of hydraulic engineering 文中給出了這種設施的參數選擇原則及部分資料。可供工程初設時參考運用。
The dentoid baffle can be used in the practice of hydraulic engineering as a new type of energy dissipation tool 齒墩設施可作為一種新型的消能工運用于擬建或改建工程上。