Numerical study on axisymmetric ventilated supercavitation influenced by drag-reduction additives

被引：21
|
作者：
Jiang, Chen-Xing [1 ]
Li, Shu-Lei [2 ]
Li, Feng-Chen [2 ]
Li, Wan-You [1 ]
机构：
[1] Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 115卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Underwater bodies; Ventilated supercavities; Drag-reduction solution; CFD; SURFACTANT SOLUTION; FLOW; SIMULATION; CAVITATION; FLUID; DYNAMICS; STATE; MODEL;
D O I：
10.1016/j.ijheatmasstransfer.2017.08.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The hydrodynamic characteristics of axisymmetric ventilated supercavitating flows influenced by drag reduction additives are numerically studied. The Cross viscosity model, a shear-thinning model, is employed to characterize the rheological feature of the aqueous solution of the drag-reduction additives. First, the numerical calculation procedure is established and verified, and the numerical results are in good agreement with the existing correlations. And then the air-liquid two-phase and air-liquid-vapor three-phase ventilated supercavitating flows in water and drag-reducing solution, respectively, are investigated. The flow resistance and morphological characteristics of the ventilated supercavities are mainly analyzed. It is obtained that the drag-reduction additives mainly influence the friction drag when the supercavities have not fully formed. The friction drag reduction rate can reach up to 49.66% and 58.13% in the two-phase and three-phase flows, respectively, in the currently investigated cases. Moreover, the vapor region caused by natural cavitation is larger in the drag-reducing solution. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：62 / 76
页数：15
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