Novel interface model for integration of molten powder distributive properties into multiphase simulation of directed energy deposition

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Thermal Sciences Pub Date : 2025-02-14 DOI:10.1016/j.ijthermalsci.2025.109789

Stanley Jian Liang Wong , Chengxi Chen , Eddie Tan Zhi'En , Srinivasan Raghavan , Hua Li

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引用次数: 0

Abstract

For the Directed Energy Deposition (DED) process, the effect of molten powder distributive properties on melt pool characteristics is not well known due to complex phenomena that occur during deposition, and a lack of technique to model it. In this study, a novel deposition method known as Molten Powder Interface Layer (MPIL), is proposed for integration of molten powder distributive properties into multiphase simulation of directed energy deposition via computational fluid dynamics (CFD) solver. The MPIL deposition method is validated with present experimental results and open literature, which demonstrates agreeable trends. The MPIL deposition method enables the study of molten powder distributive properties such as mass, velocity, and temperature on melt pool characteristics of the DED process. Finally, the MPIL deposition method is used for better understanding the performance of nozzle on melt pool characteristic for selection of preferred powder ejection nozzle.

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.