| 1. | Simulations of 2d and two - phase flow in a bubble column and an internal airlift loop reactor 鼓泡塔与气流内循环式反应器内两相流模拟 |
| 2. | Wavelet transform of velocity - time data for the analysis of turbulent structures in a trayed bubble column 时间数据的小波变换研究筛板式鼓泡塔中的湍流结构 |
| 3. | In experimental study , the gas - liquid loop facility was set up . the size of bubble column is 200 4 . 2 2000 mm3 鼓泡塔模型用有机玻璃制作,几何尺寸为200 4 . 2 2000 (内径壁厚塔高) 。 |
| 4. | The general numerical method employed for the present computations was ipsa which is a solver for multi - phase flows 数值求解采用ipsa算法。实验上,设计制造了鼓泡塔气液两相流动循环系统。 |
| 5. | Column reactors are important facility in which the mass and heat transfer happens . since bubbly flow is a basic flow pattern of gas - liquid two - phase flow in the column , thorough study on bubbly flow is of great scientific significance and important value for practical industry application 鼓泡塔反应器是重要的传热传质设备,鼓泡塔泡状流是气液两相流的一种基本流型,对泡状流进行广泛而深入的研究具有重要的科研价值和工业应用背景。 |
| 6. | Combining the unstable heat conduction in crystal layer with heat transfer of undeveloped slug flow in a vertical tube , a time - progression model of crystal layer growth in the bubble column crystallizer pipe is proposed , the calculation results from the numerical method agree well with the experimental data . under certain operating conditions , the periodical arrival of gas plugs can cause crystallization and partial re - melting occur in the crystal - melt interface 结合未充分发展弹状流的传递特征和晶层内不稳定导热,提出了鼓泡塔结晶器管内晶层生长的时间级联模型,与实验值吻合良好.特定操作条件下,随弹状泡的到来和离去,结晶界面可发生结晶-部分重熔 |
| 7. | The present paper firstly gives a review about the developments and researching status of gas - liquid two - phase flow . the complexity and difficulties in gas - liquid two - phase flow are discussed . based on this , the dissertation presents theoretical and experimental investigations on adiabatic gas - liquid two - phase turbulent flow in a bubble column 本文综述了国内外对鼓泡塔气液两相流的研究现状,通过分析指出气液两相流问题的复杂性及其模化尚存在的问题,从理论和实验两个方面对鼓泡塔内气液两相湍流进行了研究。 |
| 8. | The effect of air distributor on the flow fields was studied with emphasis . the working conditions of the bubble column simulated in the numerical study were as same as in the experiments . the velocity profile at axial direction showed a peek in the center , and a backward flow near the wall when usl / usg < 19 . 6 鼓泡塔内轴向液相速度的径向分布呈塔中心峰值、壁面附近倒流形式,且与气相折算速度大小有关,当液相折算速度一定时,随气相折算速度增大而愈加陡峭,返混也剧烈。 |