本文選題：熱敏 + 剪應(yīng)力��； 參考：《實(shí)驗(yàn)流體力學(xué)》2017年03期

【摘要】：河口海岸泥沙運(yùn)動(dòng)直接受制于床面剪應(yīng)力的大小,因此通過床面剪應(yīng)力來研究泥沙運(yùn)動(dòng)基本問題是泥沙運(yùn)動(dòng)理論研究的重要途徑,然而目前尚未有效形成波流復(fù)雜動(dòng)力作用下床面剪應(yīng)力的量測計(jì)算方法。本文利用基于微納米技術(shù)的熱敏式剪應(yīng)力新型儀器,在波流長直水槽內(nèi)開展了床面剪應(yīng)力量測研究工作。研究表明,熱敏剪應(yīng)力儀響應(yīng)頻率高、穩(wěn)定性好,量測成果較好地反映了波流作用下床面剪應(yīng)力變化基本規(guī)律,熱敏剪應(yīng)力儀可用于波流等復(fù)雜動(dòng)力作用下床面剪應(yīng)力的量測。根據(jù)試驗(yàn)量測成果,提出了波流合成剪應(yīng)力計(jì)算初步方法,可為復(fù)雜動(dòng)力作用下泥沙運(yùn)動(dòng)基本理論問題的深入研究提供參考。
[Abstract]:The sediment movement in the estuary and coastal area is directly affected by the size of the shear stress in the bed surface. Therefore, it is an important way to study the basic sediment movement through the shear stress of the bed surface. However, the method of measuring the shear stress of the bed surface shear stress under the complex dynamic action of wave flow has not been effectively formed. A new type of thermosensitive shear stress instrument has been developed for the study of shear stress in the bed surface. The research shows that the thermosensitive shear stress meter has a high response frequency and good stability. The measurement results reflect the basic law of the change of the shear stress in the bed surface under the action of wave flow, and the thermosensitive shear stress meter can be used in the complex dynamic action of wave flow and so on. According to the test results, a preliminary method for calculating the shear stress of wave flow synthesis is proposed, which can be used as a reference for the deep study of the basic theoretical problems of sediment movement under complex dynamic action.
【作者單位】： 南京水利科學(xué)研究院;水文水資源與水利工程科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;港口航道泥沙工程交通行業(yè)重點(diǎn)實(shí)驗(yàn)室;河海大學(xué)港口海岸與近海工程學(xué)院;
【基金】：國家重大科學(xué)儀器設(shè)備開發(fā)專項(xiàng)項(xiàng)目(2013YQ040911) 國家自然科學(xué)基金項(xiàng)目(51309158)
【分類號】：TV148

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