紊流区 meaning in Chinese
recirculation zone
turbulent area
turbulent flow extent
turbulent region
Examples
- The experimental results of the flow characteristics of the mmc heat sink indicate that the critical reynolds number signifying the transition from laminar flow to turbulent flow is in advance ; under the same experimental conditions , the variation in entrance direction of the microchannel inlet and outlet has little effect on the microchannel ; the experimental values of the friction factor of the de - ionized water in a microchannel agree well with those calculated using the theoretical laminar formula ; furthermore , a comparison of the experimental results and simulation results shows that navier - stokes equation and rng - turbulence model can be used to model the laminar and turbulence flow regions in a microchannel ; meanwhile , the correlations of the flow resistance in the turbulent flow regions for the de - ionized water as the working fluids are obtained from experiments
对歧管式单通道热沉流动特性的研究结果表明,微通道内流体流态由层流向紊流转变的临界雷诺数提前;改变流体的进出口方向对热沉总压降造成的影响很小;摩擦系数的实验值与理论值较接近;数值模拟结果能够与实验值较好吻合;并由实验给出了紊流区流动阻力的实验关联式。此外,选用十二烷基硫酸钠( sodiumdodecylsulphate , sds )以及烷基多糖苷( alkylpolyglycoside , apg )作为减阻添加剂,研究了表面活性剂添加对微通道流动特性的影响。 - This paper offers a method that can avoid the incorrect or rough methods mostly accepted now , and this method considers the temperature change along pipeline , the difference of friction loss in turbulence zone and the throttle effect in cross - section of reduced pipe
针对现有的静态仿真算法存在的错误和不足，提出了一种更为精确的仿真算法，该算法除考虑了管道沿线的温度变化、处于不同的紊流区摩阻损失的大小不同之外，还考虑了变径管道在变截面处存在节流效应等问题。 - Abstract : based on the turbulent flow kinetics theory the paper describes astudy on two - region flocculation model , the turbulent region is the dominant effect of fiocculation speed , the transition region is the dominant effect of scale and compactness of floculating body , and the order magnitude of available energy disipation and controlling index is put forward
文摘:应用紊流动力学原理，分析紊流条件下两区絮凝模型，提出紊流区主导絮凝速率，过渡区主导絮凝体的成长尺度及密实度，导出了有效能耗的量级及絮凝控制指标。 - Moreover , this paper investigates the influences of surfactant aqueous solutions on flow characteristics of a mmc . sodium dodecyl sulphate aqueous solution and alkyl polyglycoside aqueous solution are used as working fluids . the experiment results indicate that the drag reduction depends on flow velocity and temperature ; the drag reduction effects aren ’ t very obvious in laminar flow region , but when fluid enter turbulent flow region , the drag reduction increase notably , the drag reduction effects
研究结果表明,阻力减小率( dragreduction , dr )与流速和温度有关;层流区内表面活性剂的减阻效果不是特别明显,但进入紊流区后减阻效果开始增强,尤其进入旺盛的紊流区后减阻效果大大增强;温度提升也可增加dr ,但在温度较高时添加sds后减阻效果的改善却不及apg 。