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3 d模拟gas-laden液体流在离心泵和双流体CFD方法的评估gydF4y2Ba

bepaly下载ios 体积gydF4y2Ba3gydF4y2Ba,gydF4y2Ba页面gydF4y2Ba186 - 207 (gydF4y2Ba2021年gydF4y2Ba)gydF4y2Ba引用这篇文章gydF4y2Ba

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双流体模型的评估假设连续液体和分散气相三维计算流体动力学(CFD)模拟的气体/液体流离心泵进行研究。一种单分散的双流体模型,结合统计涡粘性湍流模型,利用。通过全面的测量数据库,启用了一个彻底的评估模型不准确。水平扩散流的结果表明,湍流模型模拟精度的一个主要限制气体/液体流动。关于泵流量,区分单相和两相流在一个封闭和半开的叶轮是找到了。甚至单相流模拟揭示挑战要求较高的空间分辨率,例如,圆形的叶片后缘和叶尖间隙流的差距。在两相泵操作中,气体累积导致相干气体口袋,预计部分叶片通道内的错误的位置上。在最好的情况下,气体的定性预测积累,低头向增加进口气体体积分数(gydF4y2BaIGVFgydF4y2Ba)可以获得。双流体泵流方法的主要限制是发现的违反稀释,分散相假设由于本地高分散相加载在连贯的气体累积。在这些情况下,泡沫人口模型没有出现有益的单分散泡沫相比分布。Volume-of-Fluid(受到)方法可以用来捕获相界面的气腔,积累要求很高的空间分辨率。因此,一个混合模型,即。,a dispersed phase two-fluid model including polydispersity for flow regions with a dilute gas phase, should be combined with an interphase capturing model, e.g., in terms of VOF. This hybrid model, together with scale-resolving turbulence models, seems to be indispensable for a quantitative two-phase pump performance prediction.

缩写gydF4y2Ba

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叶片宽度(米)gydF4y2Ba

CgydF4y2BaDgydF4y2Ba:gydF4y2Ba

无因次阻力系数(-)gydF4y2Ba

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泡沫直径(米)gydF4y2Ba

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索特平均直径(米)gydF4y2Ba

dgydF4y2Ba胡gydF4y2Ba:gydF4y2Ba

水力直径(米)gydF4y2Ba

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叶轮直径(米)gydF4y2Ba

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重力(m / sgydF4y2Ba2gydF4y2Ba)gydF4y2Ba

养狐业gydF4y2Ba:gydF4y2Ba

气体体积分数(-)gydF4y2Ba

hgydF4y2BarelgydF4y2Ba:gydF4y2Ba

相对扩散高度(-)gydF4y2Ba

HgydF4y2Ba:gydF4y2Ba

泵头(m)gydF4y2Ba

IGVFgydF4y2Ba:gydF4y2Ba

入口气体体积分数(-)gydF4y2Ba

kgydF4y2Ba:gydF4y2Ba

湍流动能(m2 / s2)gydF4y2Ba

lgydF4y2BaDgydF4y2Ba:gydF4y2Ba

相对扩散器长度(-)gydF4y2Ba

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旋转速度(sgydF4y2Ba−1gydF4y2Ba)gydF4y2Ba

ngydF4y2Ba问gydF4y2Ba:gydF4y2Ba

特定的速度(分钟gydF4y2Ba−1gydF4y2Ba)gydF4y2Ba

PgydF4y2Ba:gydF4y2Ba

压力(Pa)gydF4y2Ba

问gydF4y2Ba:gydF4y2Ba

流量(mgydF4y2Ba3gydF4y2Ba/秒)gydF4y2Ba

再保险gydF4y2Ba:gydF4y2Ba

雷诺数(-)gydF4y2Ba

年代gydF4y2Ba:gydF4y2Ba

叶尖间隙的高度差距(m)gydF4y2Ba

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转矩(Nm)gydF4y2Ba

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流向速度(米/秒)gydF4y2Ba

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卷(米gydF4y2Ba3gydF4y2Ba)gydF4y2Ba

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无因次墙墙的距离相邻细胞(-)gydF4y2Ba

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叶片数(-)gydF4y2Ba

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特定的耗散(年代gydF4y2Ba−1gydF4y2Ba)gydF4y2Ba

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桨叶角(°)gydF4y2Ba

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角速度(rad / s)gydF4y2Ba

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耗散(mgydF4y2Ba2gydF4y2Ba/秒gydF4y2Ba3gydF4y2Ba)gydF4y2Ba

ηgydF4y2Ba:gydF4y2Ba

效率(-)gydF4y2Ba

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密度(公斤/米gydF4y2Ba3gydF4y2Ba)gydF4y2Ba

1 d,gydF4y2Ba二维gydF4y2Ba3 d:gydF4y2Ba

一个,两个,三维的gydF4y2Ba

Avg:gydF4y2Ba

平均gydF4y2Ba

BSLEARSM:gydF4y2Ba

k-ωgydF4y2Ba(基线)基于显式代数雷诺应力模型gydF4y2Ba

BSLReyStr:gydF4y2Ba

k-ωgydF4y2Ba(基线)基于微分雷诺应力模型gydF4y2Ba

CFD:gydF4y2Ba

计算流体动力学gydF4y2Ba

置信区间:gydF4y2Ba

封闭的叶轮gydF4y2Ba

ESP:gydF4y2Ba

电动潜油泵gydF4y2Ba

经验值:gydF4y2Ba

实验gydF4y2Ba

G1, G2, G3:gydF4y2Ba

粗,中,细网格计算泵gydF4y2Ba

G2A、G2B G2C:gydF4y2Ba

细化网格基于G2叶尖间隙水平差距gydF4y2Ba

GGI:gydF4y2Ba

一般网格界面gydF4y2Ba

iMUSIG:gydF4y2Ba

非齐次多个大小组模型gydF4y2Ba

keEARSM:gydF4y2Ba

k -εgydF4y2Ba基于显式代数雷诺应力模型gydF4y2Ba

领导:gydF4y2Ba

发光二极管gydF4y2Ba

马克斯:gydF4y2Ba

马克斯gydF4y2Ba

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最低gydF4y2Ba

OP1, OP2:gydF4y2Ba

第一次和第二次扩散器操作点gydF4y2Ba

情景应用程序:gydF4y2Ba

Scale-adaptive湍流模型gydF4y2Ba

SC G1-G4:gydF4y2Ba

计算网格细化级别的单通道模型gydF4y2Ba

风场:gydF4y2Ba

剪切应力传输湍流模型gydF4y2Ba

受到:gydF4y2Ba

Volume-of-FluidgydF4y2Ba

OI:gydF4y2Ba

半开的叶轮gydF4y2Ba

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空气gydF4y2Ba

c:gydF4y2Ba

细胞gydF4y2Ba

提单:gydF4y2Ba

叶片gydF4y2Ba

我gydF4y2Ba:gydF4y2Ba

我gydF4y2Bath位置gydF4y2Ba

小鬼:gydF4y2Ba

叶轮gydF4y2Ba

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水gydF4y2Ba

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总gydF4y2Ba

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Hundshagen, M。曼苏尔,M。,Thévenin, D.et al。gydF4y2Ba3 d模拟gas-laden液体流在离心泵和双流体CFD方法的评估。gydF4y2BaExp。第一版。Multiph。流gydF4y2Ba3,gydF4y2Ba186 - 207 (2021)。https://doi.org/10.1007/s42757 - 020 - 0080 - 4gydF4y2Ba

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