Thermal Experimental and Numerical Study on Performance of a Novel Conical Swirl-Vane Steam Separator

doi:10.16183/j.cnki.jsjtu.2020.038

Abstract

Abstract:

A full-scale novel conical swirl-vane steam separator with a conical barrel is studied by test and numerical methods using steam and water as working fluids. The test results indicate that the separation efficiency of the separator decreases first and then increases with the increase of steam superficial velocity. But this phenomenon is not obvious at low steam superficial velocities. The pressure drop of the separator increases significantly with the increase of steam superficial velocity. Based on the commercial software STAR-CCM+ and Euler-Euler two-fluid model, a numerical simulation is conducted to study the effect of droplet size on the separation efficiency and pressure drop of the swirl-vane separator. The numerical results imply that large droplets promote the liquid separation. However, the pressure drop is insensitive to the droplet size. According to the test results, a numerical model that is in good agreement with the test is established, and the distribution of presssure, velocity, and water volume fraction are analyzed in detail.

Key words: swirl-vane steam separator, thermal test, numerical simulation, separation performance, flow field

CLC Number:

TK121

XU Dehui, GU Hanyang, LIU Li, HUANG Chao. Thermal Experimental and Numerical Study on Performance of a Novel Conical Swirl-Vane Steam Separator[J]. Journal of Shanghai Jiao Tong University, 2021, 55(9): 1087-1094.

Figures/Tables 14

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工况序号	j_l /(m·s^-1)	j_g/(m·s^-1)
1	0.30	2.49
2	0.30	4.04
3	0.30	5.38
4	0.30	6.46
5	0.30	7.75
6	0.30	10.79
7	0.30	12.93

参数	饱和蒸汽	饱和水
p/MPa	6.0	6.0
j/(m·s^-1)	13.22	13.22
φ	0.02	0.98
ρ/(kg·m^-3)	30.82	6.46
μ×10⁵/(Pa·s)	1.84	9.53

参数	试验值	计算值	相对误差/%
η/%	71.50	71.26	0.34
Δp₁/kPa	11.85	11.75	0.84
Δp₂/kPa	54.46	47.70	12.41

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