博碩士論文 943202056 完整後設資料紀錄

DC 欄位	值	語言
DC.contributor	土木工程學系	zh_TW
DC.creator	胡富雁	zh_TW
DC.creator	Fu-Yan Hu	en_US
dc.date.accessioned	2007-7-24T07:39:07Z
dc.date.available	2007-7-24T07:39:07Z
dc.date.issued	2007
dc.identifier.uri	http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=943202056
dc.contributor.department	土木工程學系	zh_TW
DC.description	國立中央大學	zh_TW
DC.description	National Central University	en_US
dc.description.abstract	波狀水躍屬自由邊界問題，本研究以數值模擬及水工模型試驗探討波狀水躍流場特性。模式使用有限體積法離散計算網格，並配合流體體積法決定自由液面，Navier-Stokes equation採用投影法估計，且加入大渦流紊流模式處理紊流剪應力。實驗以洩水閘門產生超臨界流，藉由調整尾水檻控制下游水深，觀察波狀水躍並以模式驗證。 本研究發現，波狀水躍產生不均勻底床剪應力，波谷下剪應力較強。流場速度變化僅在水流上層，但無渦度產生，故其消能較慢。由流場之動壓分佈，波谷的動壓大於波峯的動壓，造成水面的抬升。	zh_TW
dc.description.abstract	In order to investigate the flow characteristic of the two-dimensional undular jump, this paper proposes a numerical simulation and conduct a hydraulic physical model to validate the propose scheme. In this paper, the finite volume method and volume of fluid coupled with large eddy simulation technique to simulate the free-surface profile of undular jump. Then, the proposed scheme is applied to the numerical simulation of the physical model. The comparisons between the simulated result and the measured data show that the proposed scheme can reasonably simulation the free surface profile and the velocity distribution of wave crest and wave trough. The results highlight the nonuniformity of the boundary shear stress distributions.	en_US
DC.subject	底床剪應力	zh_TW
DC.subject	大渦流紊流模式	zh_TW
DC.subject	流體體積法	zh_TW
DC.subject	波狀水躍	zh_TW
DC.subject	undular jump	en_US
DC.subject	boundary shear stress.	en_US
DC.subject	large eddy simulation	en_US
DC.subject	volume of fluid	en_US
DC.title	波狀水躍流場之水理分析	zh_TW
dc.language.iso	zh-TW	zh-TW
DC.title	The Study of Undular Jumps	en_US
DC.type	博碩士論文	zh_TW
DC.type	thesis	en_US
DC.publisher	National Central University	en_US