Experimental investigation on the spray characteristics of power-law fluid in a swirl injector

被引：4

作者：

Bai, Fuqiang ^{[1
,2
]}

Chang, Qing ^{[3
]}

Chen, Shixing ^{[1
]}

Guo, Jinpeng ^{[1
]}

Jiao, Kui ^{[1
]}

Du, Qing ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China

[2] Tianjin Internal Combust Engine Res Inst, Tianjin 300072, Peoples R China

[3] China FAW CO, Wuxi Fuel Inject Equip Res Inst, Wuxi 214063, Peoples R China

来源：

FLUID DYNAMICS RESEARCH | 2017年 / 49卷 / 03期

关键词：

power-law fluid; swirl jet; breakup; velocity distribution; Sauter mean diameter; ATOMIZATION CHARACTERISTICS; GELLED PROPELLANTS; IMPINGING JETS;

D O I：

10.1088/1873-7005/aa6726

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

High-speed photography and 3D phase Doppler methods are used to obtain the swirl jet images, 3D velocities and size distribution of different droplets (including deionized water and two kinds of power-law fluid). For the power-law fluids, a short circular jet is formed after the nozzle exit at low pressure. Along the X direction, the distributions of axial velocity w and Sauter mean diameter (SMD) are symmetrical and increase from the center to both sides. The effect of injection pressure on the radial velocity u is not obvious. Along the Z axis, the absolute value of 3D velocities decreases to some extent with droplets moving downstream. The SMD decreases apparently with the increment of the distance along the Z axis at 1.0 MPa.

引用

页数：11

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