本文選題：渾水體 + 流變　； 參考：《中國海洋大學(xué)學(xué)報(自然科學(xué)版)》2017年01期

【摘要】：海底構(gòu)筑物會被運動的渾水流沖擊破壞,渾水流的運動能力受到渾水體流變特征的影響。由此需要關(guān)注渾水體流變特征發(fā)生變化的含沙量界限。本文采用流變儀試驗和水槽試驗相結(jié)合,對不同含沙量的渾水體進(jìn)行試驗,結(jié)果表明,淡水介質(zhì)情況下牛頓流體和賓漢流體的過渡界限含沙量范圍在340~400g/L;牛頓流體、賓漢流體、及其過渡界限流體的運動宏觀特征不同,流速有差異。通過對渾水體中顆粒分布的分析,認(rèn)為顆粒表面的結(jié)合水膜對流變特性幾乎沒有影響,以顆粒為固壁的水流邊界層厚度可能對渾水體流變特性有影響,而顆粒之間形成的孔隙造成的毛細(xì)作用是影響不同含沙量渾水體流變特性的重要因素。
[Abstract]:The underwater structure will be destroyed by the moving muddy water flow, and the movement ability of the muddy water flow will be affected by the rheological characteristics of the muddy water body. Therefore, it is necessary to pay attention to the sediment concentration limit in which the rheological characteristics of muddy water body change. In this paper, the rheometer test and flume test are used to test the muddy water with different sediment content. The results show that the limit of sediment content of Newtonian fluid and Bingham fluid is 340400 g / L; Newtonian fluid, Bingham fluid, Newtonian fluid, Benghan fluid, Newtonian fluid, Bingham fluid, Newtonian fluid and Bingham fluid. The macroscopic characteristics of the fluid and its transition boundary are different, and the velocity of the fluid is different. Based on the analysis of particle distribution in muddy water, it is considered that the combined water film on the surface of particles has little effect on rheological properties, and the thickness of boundary layer with particle as solid wall may have an effect on rheological characteristics of muddy water. The capillary effect caused by the pores formed between the particles is an important factor affecting the rheological characteristics of the muddy water with different sediment content.
【作者單位】： 中國海洋大學(xué)海洋環(huán)境與生態(tài)教育部重點實驗室;中國海洋大學(xué)山東省海洋環(huán)境地質(zhì)工程實驗室;
【基金】：國家自然科學(xué)基金項目(41076021) 國家海洋局海洋公益性行業(yè)科研專項(201005005-6)資助~~
【分類號】：P731.2;P75
，

本文編號：1789998