本文關(guān)鍵詞： 進水口 漸變段 局部水頭損失 數(shù)值模擬 量綱分析　出處：《水利水電技術(shù)》2016年04期 　論文類型：期刊論文

【摘要】：為研究水電站進水口漸變段局部水頭損失,分別針對漸變段長度、隧洞長度和圓形隧洞直徑三個影響因素,采用CFD方法模擬了15種進水口漸變段,進行數(shù)值分析。在此基礎(chǔ)上,通過量綱分析研究了水電站進水口漸變段水頭損失的敏感性。結(jié)果表明:水電站進水口漸變段局部水頭損失與漸變段長度、隧洞長度和圓形隧洞直徑有關(guān);漸變段長度、隧洞長度對局部水頭損失影響較小,而隧洞直徑對局部水頭損失影響較大。研究結(jié)果可為水電站進水口漸變段設(shè)計計算提供參考。
[Abstract]:In order to study the local head loss of the gradual change section of the water intake of hydropower station, aiming at the three influencing factors of the gradual length, the tunnel length and the diameter of the circular tunnel, the CFD method is used to simulate 15 kinds of gradually changing sections of the inlet, and the numerical analysis is carried out. Through dimensional analysis, the sensitivity of water head loss in the gradual section of the inlet of hydropower station is studied. The results show that the local head loss of the gradual section of the inlet of the hydropower station is related to the length of the gradient section, the length of the tunnel and the diameter of the circular tunnel, and the length of the gradual change section. The length of the tunnel has little effect on the local head loss, while the diameter of the tunnel has a great influence on the local head loss. The results of the study can provide a reference for the design and calculation of the gradual change section of the inlet of the hydropower station.
【作者單位】： 河海大學(xué)水利水電學(xué)院;河海大學(xué)力學(xué)與材料學(xué)院;
【基金】：國家“十二五”科技支撐計劃(2012BAD10B02)
【分類號】：TV135

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