Modelling of bubble departure in flow boiling using equilibrium thermodynamics
Modelling of bubble departure in flow boiling using equilibrium thermodynamics
复制标题
使用平衡热力学模拟流动沸腾中的气泡离开
DOI:
10.1016/j.ijheatmasstransfer.2018.02.057
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发表时间:
2018
影响因子:
5.2
通讯作者:
Giustini G
中科院分区:
文献类型:
--
作者:
Giustini G
To improve the closure relations employed for component-scale Computational Fluid Dynamics simulation of boiling flows, a first-principles method for predicting bubble departure diameters in flow boiling has been developed. The proposed method uses minimisation of the free energy of a system in thermodynamic equilibrium to predict the contact angle and the resistance to sliding of a vapour bubble attached to a surface in the presence of a forced liquid flow. Predictions of the new method are compared with measurements from existing experimental databases, and agreement with data is shown to be comparable or superior to that obtained with previous bubble departure models that have generally used a force-balance approach. The main advantages of the energy-based method over the previous force-based methods are that its formulation is simpler, and that the new model does not require the use ofad hoctunable parameters to define force terms, or geometrical characteristics of the attached bubble such as its base area, which cannot be confirmed experimentally. This increases confidence in the validity of the new approach when applied outside the rather limited range of current test data on bubble departure in flow boiling.
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DOI:
10.1017/cbo9781107338760
发表时间:
1995-02
期刊:
FUZZ-IEEE'99. 1999 IEEE International Fuzzy Systems. Conference Proceedings (Cat. No.99CH36315)
影响因子:
--
作者:
C. Brennen
通讯作者:
C. Brennen
DOI:
10.1016/j.ijheatmasstransfer.2017.07.013
发表时间:
2017
影响因子:
5.2
作者:
Ardron K
通讯作者:
Ardron K
DOI:
10.1016/0021-9797(73)90219-1
发表时间:
1973-08
期刊:
--
影响因子:
--
作者:
A. Adamson
通讯作者:
A. Adamson
影响因子:
2.6
作者:
H. Andersson;B. Pettersson
通讯作者:
B. Pettersson
影响因子:
--
作者:
G. Giustini;S. Walker;Yohei K. Sato;B. Niceno
通讯作者:
B. Niceno