Publications

Numerical study on regenerative cooling technology with endothermic hydrocarbon fuel: A comprehensive review

Published in Journal of Cleaner Production, 2024

This paper summarizes the phenomena and challenges in regenerative cooling, including transcritical thermophysical properties, fuel pyrolysis, and surface coking. The corresponding numerical methods are classified according to their characteristics, including the fuel surrogate, pyrolysis, surface coking, and turbulence models. The scope of application and the advantages and disadvantages of the models are discussed.

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Experimental study on the preparation of superalloy Inconel718 heat exchanger channels by electrochemical etching method

Published in Thermal Science and Engineering Progress, 2024

In this paper, the etching technique was utilized to fabricate heat exchange channels on Inconel718 plates, and experiments were carried out in NaCl-ethylene glycol solution. The effects of etchant concentration and temperature on etching rate are investigated.

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Insight into the heat transfer process of graphene aerogel composite phase change material

Published in Energy, 2023

A visual experimental platform was established to investigate the heat transfer and phase change characteristics of graphene aerogel composite phase change materials in this study. Furthermore, two new cascade arrangements are proposed and the effects of cascade arrangements on heat transfer performance are discussed.

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Flow Distribution and Heat Transfer Performance of Two-Phase Flow in Parallel Flow Heat Exchange System

Published in Energy, 2023

In this study, a numerical model is developed to quickly predict the flow distribution and heat transfer of two-phase flow in the parallel flow system, and the maximum average relative deviation with experimental data is 4.4%. The effects of geometric parameters and non-uniform thermal load on flow and heat transfer are discussed.

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Numerical Investigation on Flow Pattern, Heat Transfer and Pressure Drop Characteristics of Flow Boiling with Discrete Heat Sources

Published in Heat Transfer Engineering, 2023

With the rapid growth of computing demand and the wide application of multichip devices, heat sources are distributed discretely in space. Therefore, the flow boiling in the mini-channel with two discrete heat sources is investigated in this study. The effects of heat source distribution, inlet fluid temperature and channel diameter on flow pattern, heat transfer and pressure drop are discussed in detail.

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Effect of pressure on regenerative cooling process of endothermic hydrocarbon fuel at severe pyrolysis conditions

Published in Aerospace Science and Technology, 2023

In order to fill the gap in existing research on the pressure effects at severe pyrolysis, the influence of pressure on the flow field, pyrolysis behaviours, heat transfer, and surface coking are numerically investigated in this study. The results indicate that the velocity-temperature curves at different pressures have two intersections due to the difference in initial pyrolysis temperature, reaction rate, and product distribution.

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Numerical investigations on Ledinegg instability in single and parallel channels under localized heat source

Published in Heat Transfer Engineering, 2022

The study of Ledinegg instability in electronic equipment has been carried out in this article,and the influences of heating power, inlet subcooling and channel inclination on Ledinegg instability are investigated.

Flow Distribution and Heat Transfer Performance of Two-Phase Flow in Parallel Channels with Different Cross Section

Published in Chemical Engineering Transactions, 2022

A 3D numerical model of flow distribution and heat transfer of two-phase flow in parallel channels is developed and validated in the present study. The effect of channel cross section was investigated, and three typical cross section shapes are discussed.

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Numerical investigation on temperature control characteristics based on phase change temperature gradient arrangement

Published in Journal of Engineering Thermophysics (in Chinese), 2022

In this paper, a new idea of phase-change temperature control based on phase transition temperature gradient arrangement is proposed to optimize the temperature control and the phase change heat transfer process is studied numerically by COMSOL software.

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A new structure of PCHE with embedded PCM for attenuating temperature fluctuations and its performance analysis

Published in Energy, 2022

To attenuate the temperature fluctuations in the cycle, this study proposes a new structure with phase change materials embedded in the printed circuit heat exchanger. This structure package can contain a variety of phase change materials in a stepwise arrangement and a composite phase change material with expanded graphene. The effects of different flow directions, the number of layers in the phase change material ladder, whether the phase change material is compounded with expanded graphene or not, and the thickness of the phase change material were numerically compared.

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Numerical Investigation on Two-Phase Flow Heat Transfer Performance and Instability with Discrete Heat Sources in Parallel Channels

Published in Energy Conversion and Management, 2021

The two-phase heat transfer characteristics and instability in parallel channels with discrete heat source arrangement were studied by numerical simulation in this paper.

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Solar-thermal energy conversion prediction of building envelope using thermochemical sorbent based on established reaction kinetics

Published in Energy Conversion and Management, 2021

In this paper, the dehydration (heat charge) and hydration (discharge) reaction kinetics of thermochemical sorbents synthesised in previous work by the author is established by using the isothermal method, with the aim of understanding their thermochemical conversion behaviour and developing reaction models for numerical simulations. The effects of temperature, reaction advancement, and vapour pressure are fully considered and employed in a thermochemical energy storage model.

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Effect of pyrolytic reaction of supercritical aviation kerosene RP-3 on heat and mass transfer in the near-wall region

Published in Applied Thermal Engineering, 2021

In the present study, the heat and mass transfer processes are investigated by a numerical method to evaluate the mass distribution of pyrolytic products in the near-wall region. A detailed pyrolysis model of RP-3 aviation fuel is incorporated to analyze the pyrolysis process in the regenerative cooling passage.

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Confinement Effect of Graphene Interface on Phase Transition of n-Eicosane: Molecular Dynamics Simulations

Published in Langmuir, 2020

In this article, the phase transition behavior of n-eicosane in slit-shaped pores between sheets of graphene is investigated by molecular dynamics simulation. It is found that the graphene interface makes the phase transition temperature of n-eicosane increase, under the initial slit widths of 1.5–5.3 nm.

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