Hydrodynamic characteristics of cyclohexane in a horizontal mini-tube at trans- and supercritical pressures

Yang, Zhuqiang; Shan, Yafei; Zhang, Bo; Liu, Yunfa

doi:10.1016/j.applthermaleng.2017.10.009

Cited by 28 publications

(3 citation statements)

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“…The turbulence model needs to be verified based on the experimental data as well as mesh sensitivity. Herein, the experimental data based on the vertical tube (n-decane) [5] and the horizontal tube (cyclohexane) [31], respectively, are used to assess the turbulence models and the corresponding findings are discussed below. Note that the mesh distribution is different according to the treatment of the flow zone near the solid wall for different turbulence models.…”

Section: Validation Of the Turbulence Model And Mesh Sensitivitymentioning

confidence: 99%

“…For the horizontal tube, the local inner wall temperature at five operating conditions is extracted from [31] and the test conditions are listed as:…”

Section: Validation Of the Turbulence Model And Mesh Sensitivitymentioning

confidence: 99%

“…Validation of the computational model by comparison of the present numerical results and experimental data (the local inner wall temperature of tube) at five mass flow rates for x/l ¼ 0.85[31].…”

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confidence: 96%

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Numerical analysis of supercritical n-decane upward flow and heat transfer characteristics in the buffer layer of a vertical tube

Sun

Xie

et al. 2019

Numerical Heat Transfer, Part A: Applications

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To explore the behavior and mechanisms of heat transfer deterioration (HTD), the flow and thermal performances of supercritical n-decane in upward vertical tubes are investigated with emphasis on the boundary layer. It is realized that the dramatic variation of the thermophysical properties can cause unconventional heat transfer phenomenon and the change of the density is important in particular. The intensity of the HTD gradually increases once the position of the pseudo-critical temperature lays in the buffer layer region. Correspondingly, the turbulence kinetic energy is significantly suppressed. The large temperature gradient in the buffer layer zone means that the temperature commonly used in existing empirical correlations and based on the wall temperature or bulk temperature is not very appropriate and such an approach leads to poor prediction accuracy of the correlations.

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Section: Validation Of the Turbulence Model And Mesh Sensitivitymentioning

confidence: 99%

“…For the horizontal tube, the local inner wall temperature at five operating conditions is extracted from [31] and the test conditions are listed as:…”

Section: Validation Of the Turbulence Model And Mesh Sensitivitymentioning

confidence: 99%