Author
P. Ye
Bio: P. Ye is an academic researcher from Tsinghua University. The author has contributed to research in topics: Pressure drop & Volume of fluid method. The author has an hindex of 1, co-authored 1 publications receiving 212 citations.
Papers
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TL;DR: In this article, a numerical simulation of the boiling flow of R141B in a horizontal coiled tube was performed using the VOF multiphase flow model, and the corresponding experiments were conducted to investigate the boiling flows.
273 citations
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TL;DR: In this article, a large pool of published papers on computational simulation of boiling and condensation is reviewed and compared, as well as identification of future research needs to improve predictive computational capabilities.
297 citations
TL;DR: The developed model is used to simulate the flow boiling process of a hydrocarbon feedstock in the tubes of a convection section heat exchanger of a steam cracker and results show a succession of horizontal two-phase flow regimes in agreement with the literature.
225 citations
TL;DR: In this paper, a numerical model for the simulation of condensation heat transfer and fluid flow characteristics in a single microchannel was proposed, which was based on the volume of fluid approach, which governed the hydrodynamics of the two-phase flow.
135 citations
TL;DR: In this paper, a highly instrumented condensation module is used to map detailed axial variations of both wall heat flux and wall temperature, which are used to determine axial variation of the condensation heat transfer coefficient.
125 citations
TL;DR: In this article, a 3D volume of fluid simulation of condensation of R134a inside a 1 mm i.d. minichannel is presented, where a uniform interface temperature and a uniform wall temperature are fixed as boundary conditions.
Abstract: A three-dimensional volume of fluid (VOF) simulation of condensation of R134a inside a 1 mm i.d. minichannel is presented. The minichannel is horizontally oriented and the effect of gravity is taken into account. Simulations have been run both with and without taking into account surface tension. A uniform interface temperature and a uniform wall temperature have been fixed as boundary conditions. The mass flux is G = 100 kg m−2 s−1 and it has been assumed that the flow is laminar inside the liquid phase while turbulence inside the vapor phase has been handled by a modified low Reynolds form of the k–ω model. The fluid is condensed till reaching 0.45 vapor quality. The flow is expected to be annular without the presence of waves, therefore the problem was treated as steady state. Computational results displaying the evolution of vapor–liquid interface and heat transfer coefficient are reported and validated against experimental data. The condensation process is found to be gravity dominated, while the global effect of surface tension is found to be negligible. At inlet, the liquid film is thin and evenly distributed all around the tube circumference. Moving downstream the channel, the film thickness remains almost constant in the upper half of the minichannel, while the film at the bottom of the pipe becomes thicker because the liquid condensed at the top is drained by gravity to the bottom.
118 citations