Assessment of horizontal in-tube condensation models using MARS code. Part I: Stratified flow condensation

Jeon, Seong-Su; Hong, Soon-Joon; Park, Ju-Yeop; Seul, Kwang Won; Park, Goon-Cherl

doi:10.1016/j.nucengdes.2012.10.006

Cited by 15 publications

(2 citation statements)

References 15 publications

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“…One of the first works on the item has been published in 1947 [1]. Since then various authors have proposed more then 60 methods and correlations [2][3][4][5][6][7]. At present, precise estimation of heat transfer is possible only in absence of vapor velocity impact on the process.…”

Section: Introductionmentioning

confidence: 99%

Condensation inside smooth horizontal tubes: Part 2. Improvement of heat exchange prediction

et al. 2017

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Original scientific paper https://doi.org/10.2298/TSCI140815045RIn this study, a theoretical model of film condensation inside horizontal tubes with more precise definition of friction coefficient on interphase is presented to calculate the heat transfer coefficient under two-phase annular and intermediate flow conditions. This more precise definition contains experimental substantiation of correction for calculation of pressure losses by friction and correction that takes into account surface suction on the interphase. Comparison of this model with the experimental data of various authors demonstrates that the results are in satisfactory and close agreement.

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Section: Introductionmentioning

confidence: 99%

Condensation inside smooth horizontal tubes: Part 2. Improvement of heat exchange prediction

et al. 2017

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“…The first group has five flow patterns: stratified flow, wavy flow, wavy annular flow, annular flow, and annular-mist flow, while the other has three flow patterns: slug, plug, and bubbly flow. Also, the first group condensation models can be categorized as gravity dominated stratified flow or shear dominated annular flow models [10,11].…”

Section: Introductionmentioning

confidence: 99%

Modeling of high pressure steam condensation in inclined horizontal tubes of PAFS in APR+

Yun

Shin

2015

Journal of Nuclear Science and Technology

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A Single-tube COndensation exPeriment (SCOP) was performed at Korea Advanced Institute of Science and Technology (KAIST) to simulate the condensation phenomena of Passive Auxiliary Feedwater System (PAFS), which is introduced in Advanced Power Reactor Plus. SCOP tests were conducted for two pipes of different diameters [22.6 and 44.8 mm inside diameter] with 8.2 m length and 2.5-4 degrees of the inclined angles of the upper and lower section of each tube. The experiment were performed at 1.5-6.5 MPa of steam pressure and 0.12-0.45 kg/s of steam flow. Based on the Kim and No correlation (KAIST, 2000), we developed a new turbulent-condensation correlation for the turbulent region of the liquid film in the inclined tube. We introduced the factors to account for the different inclined angle effect, different diameter effect. The Nusselt correlation is adopted for condensation near the tube inlet where the laminar region of the liquid film is dominant due to the small amount of condensed water. The present correlation was compared with the Shah and RELAP5 condensation model using the SCOP data. The root mean square errors of the present correlation, Shah model, and RELAP5 model are 17.41%, 57.88%, and 43.07%, respectively: the present correlation can predict well the condensation characteristics in comparison with other correlations in PAFS.

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Heat transfer during film condensation inside plain tubes. Review of experimental research

et al. 2019

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Assessment of horizontal in-tube condensation models using MARS code. Part I: Stratified flow condensation

Cited by 15 publications

References 15 publications

Condensation inside smooth horizontal tubes: Part 2. Improvement of heat exchange prediction

Condensation inside smooth horizontal tubes: Part 2. Improvement of heat exchange prediction

Modeling of high pressure steam condensation in inclined horizontal tubes of PAFS in APR+

Heat transfer during film condensation inside plain tubes. Review of experimental research

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