Modelling and investigation on heat transfer deterioration during transpiration cooling with liquid coolant phase-change

Dong, Wenjie; Wang, Jianhua; Chen, Siyuan; Ai, Bangcheng; Luo, Xiaoguang

doi:10.1016/j.applthermaleng.2017.08.155

Cited by 40 publications

(3 citation statements)

References 26 publications

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“…The difficulty for constructing the two‐phase flow field concentrates on the coupling of liquid flow and bubble flow 151 . As the liquid phase flows in the plate, the vapor generates from the liquid by evaporation and then forms the bubble to drift with two‐phase flow 152 . However, the issue for capturing the interface between liquid and bubble still remains a challenge.…”

Section: Thermal Theory and Simulated Thermal Modelsmentioning

confidence: 99%

“…151 As the liquid phase flows in the plate, the vapor generates from the liquid by evaporation and then forms the bubble to drift with twophase flow. 152 However, the issue for capturing the interface between liquid and bubble still remains a challenge. Generally, two methods based on hydromechanics can be adopted for modeling, and can be divided into interface-tracking method and interface-capturing method.…”

Section: Two-phase Flow Field Modelmentioning

confidence: 99%

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Essential technologies on the direct cooling thermal management system for electric vehicles

Yang

Zhou

et al. 2021

Intl J of Energy Research

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As the increasing concern of degradation or thermal runaway of lithium-ion batteries, direct cooling system on electric vehicles draws much attention and has been broadly researched. Although satisfactory energy efficiency and thermal performance can be achieved according to current appliances, in-depth discussion of system design and modeling is still necessary for providing mature applications. Herein, a comprehensive review of direct cooling system is presented, and essential components on the overall design are introduced as 4C chain (construction of the system, component modeling, cooling plate design, and coolant selection). Construction, coolant, cooling plate, and component modeling are presented independently for discussing the research progress, where detailed information is provided contributing to the selection of essential components. Moreover, the typical applications on electric vehicles of direct cooling are also investigated, and more productions are under research. Apart from system designing, the environmental fitness is also considered and the defects are summarized for system optimization.Considering to achieve future innovative application, digital twin model-based method is delivered for providing the guidance of prospective direct cooling system design, and the method enhances the potential to achieve better thermal management based on digital technologies and cloud-control platform. Based on the innovative development of cloud-controlling platform design and electronic and electrical architecture, the cloud battery controlling provides the chances for online elaborate model-based operation and precise model-based controlling strategy for novel direct cooling system. Novelty StatementA comprehensive review on the general construction of system is presented, and essential components of direct cooling system are also summarized for optimizing the system efficiency. The article highlights the research profile of

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Section: Thermal Theory and Simulated Thermal Modelsmentioning

confidence: 99%

Section: Two-phase Flow Field Modelmentioning

confidence: 99%

Essential technologies on the direct cooling thermal management system for electric vehicles

Yang

Zhou

et al. 2021

Intl J of Energy Research

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show abstract

“…To simplify the method, the SMM solves the mass and momentum equations for both fluids, but treats the energy equation as a two-phase mixture. Dong and Wang [20,21] established a SMM and considered modifications to the diffusion coefficient in the fluid energy equation to study the heat transfer deterioration effects caused by local high heat flux. Xin et al [22] used a SMM to explore the influence of thermal conductivity and porosity of porous media materials on transpiration cooling effects.…”

Section: Introductionmentioning

confidence: 99%

A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection

Jin,

Zhao,

Yao

et al. 2024

Adv. Aerodyn.

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Aiming to efficiently simulate the transient process of transpiration cooling with phase change and reveal the convection mechanism between fluid and porous media particles in a continuum scale, a new two-phase mixture model is developed by incorporating the local thermal non-equilibrium effect. Considering the low-pressure and high overload working conditions of hypersonic flying, the heat and mass transfer induced by capillary and inertial body forces are analyzed for sub-cooled, saturated and super-heated states of water coolant under varying saturation pressures. After the validation of the model, transient simulations for different external factors, including spatially-varied heat flux, coolant mass flux, time-dependent external pressure and aircraft acceleration are conducted. The results show that the vapor blockage patterns at the outlet are highly dependent on the injection mass flux value and the external pressure, and the reduced saturation temperature at low external pressure leads to early boiling off and vapor blockage. The motion of flying has a large influence on the cooling effect, as the inertial force could change the flow pattern of the fluid inside significantly. The comparison of the results from 2-D and 3-D simulations suggests that 3-D simulation shall be conducted for practical application of transpiration cooling, as the thermal protection efficiency may be overestimated by the 2-D results due to the assumption of an infinite width length of the porous plate.

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Simulation of the Thermionic Emission of Electrons and the Possibility of Using This Effect for the Cooling of Aircraft Members

Bulat,

Volkov,

Esakov

et al. 2024

J Eng Phys Thermophy

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Modelling and investigation on heat transfer deterioration during transpiration cooling with liquid coolant phase-change

Cited by 40 publications

References 26 publications

Essential technologies on the direct cooling thermal management system for electric vehicles

Essential technologies on the direct cooling thermal management system for electric vehicles

A modified local thermal non-equilibrium model of transient phase-change transpiration cooling for hypersonic thermal protection

Simulation of the Thermionic Emission of Electrons and the Possibility of Using This Effect for the Cooling of Aircraft Members

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