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Kun-Ying Li, Win-Jet Luo and Shih-Jie Wei
This study presents a multiphysics simulation analysis that was performed for the cooling channel of a built-in spindle. The design of experiments (DOE) method was employed to optimize the dimension of the cooling channel, and a practical machining exper...
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Jian Liu, Mengyao Xu, Pengchao Liu and Wenxiong Xi
At an extremely high Mach number, the regenerative cooling of traditional kerosene cannot meet the requirement of the heat sink caused by aerodynamic heating and internal combustion in a scramjet propulsion system. As a supplement of traditional regenera...
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Lei Xi, Jianmin Gao, Liang Xu, Zhen Zhao, Zhengheng Yang and Yunlong Li
In this study, different layout schemes for an X-shaped truss array channel are designed to explore the application of an X-shaped truss array structure in the mid-chord region of turbine blades. The flow and heat transfer performance of X-shaped truss a...
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Qi Jing, Yonghui Xie and Di Zhang
The trailing edge regions of high-temperature gas turbine blades are subjected to extremely high thermal loads and are affected by the external wake flow during operation, thus creating great challenges in internal cooling design. With the development of...
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Beate Wörz, Mark Wieler, Viola Dehe, Peter Jeschke and Michael Rabs
This paper presents the results of integral heat transfer measurements taken in a square ribbed cooling channel configuration for evaluating heat transfer and turbulent flow characteristics in convective cooled gas turbine blades and draws a comparison w...
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Irina Boshkova,Oleksandr Titlov,Natalya Volgusheva,Catherina Georgiesh,Tetiana Sahala
Pág. 47 - 54
This paper reports a study of the thermoacoustic phenomena in steam-generating channels of the cooling system of heat-loaded devices. The examined cooling modes are characterized by surface boiling of the heat carrier, which occurs due to high heat flows...
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Tom Verstraete, Lasse Müller and Jens-Dominik Müller
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Tom Verstraete, Lasse Müller and Jens-Dominik Müller
The success of shape optimisation depends significantly on the parametrisation of the shape. Ideally, it defines a very rich variation in shape, allows for rapid grid generation of high quality, and expresses the shape in a standard Computer Aided Design...
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Lei Xi, Jianmin Gao, Liang Xu, Zhen Zhao, Qicheng Ruan and Yunlong Li
In this study, numerical simulations were carried out to investigate the flow and heat transfer characteristics of jet array impingement cooling in the quasi-leading-edge channel of gas turbine blades. The influence laws of Reynolds number (Re, 10,000 to...
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Chuang Zhou, Nanjia Yu, Shuwen Wang, Shutao Han, Haojie Gong, Guobiao Cai and Jue Wang
Liquid rocket engines with hydrogen peroxide and kerosene have the advantages of high density specific impulse, high reliability, and no ignition system. At present, the cooling problem of hydrogen peroxide engines, especially with regenerative cooling, ...
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Deog-Jae Hur, Suk-Hwan Jeong, Seong-Il Song and Jung-Hun Noh
The onboard charger (OBC)/low-voltage DC-DC converter (LDC) integrated power inverter for electric vehicles comprises multiple electrical elements that can heat up, which can cause performance degradation and system instability issues in electric vehicle...
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Young Jin Wi, Jong Hyun Kim, Jung Shin Lee and Joon Sang Lee
Microchannel flow boiling is a cooling method studied in microscale heat-cooling, which has become an important field of research with the development of high-density integrated circuits. The change in microchannel surface characteristics affects thermal...
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Kirttayoth Yeranee, Yu Rao, Chao Xu, Yueliang Zhang and Xiyuan Su
Additive manufacturing allows the fabrication of relatively complex cooling structures, such as triply periodic minimal surface (TPMS), which offers high heat transfer per unit volume. This study shows the turbulent flow heat transfer and thermal stress ...
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Debra Ortega, Alejandro Amador, Mohiuddin Ahmad, Ahsan Choudhuri and Md Mahamudur Rahman
This paper presents an experimental characterization of liquid nitrogen (LN2) flow boiling in additively manufactured minichannels. There is a pressing need of concerted efforts from the space exploration and thermal transport communities to design high-...
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Shaohang Yan, Mingchen Qiang, Qi Zhao, Yu Hou and Tianwei Lai
In high-speed motors, there is a huge amount of heat generation from core and winding losses, which may result in thermal failures or motor performance deterioration. In the prevention of heat accumulation, efficient cooling technology is critical for sm...
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Christopher Hartmann, Julia Schweikert, François Cottier, Ute Israel, Jochen Gier and Jens von Wolfersdorf
Experimental results for the transient heat transfer characteristics over a flat plate and over a plate with V-shaped ribs were compared to numerical results from a coupling environment applying FEM and CFD. In order to simulate transient effects in the ...
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Bo Xu, Bing Chen, Jian Peng, Wenyuan Zhou and Xu Xu
To better understand the characteristics of coupled heat transfer in liquid rocket engines, a calculation scheme is proposed in this paper. This scheme can simulate the coupled heat transfer processes, including combustion and flow in the thrust chamber,...
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Kai Dresia, Eldin Kurudzija, Jan Deeken and Günther Waxenegger-Wilfing
Accurate calculations of the heat transfer and the resulting maximum wall temperature are essential for the optimal design of reliable and efficient regenerative cooling systems. However, predicting the heat transfer of supercritical methane flowing in c...
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Miguel Arratia, Bruce Bagby, Peter Carney, Jiajun Huang, Ryan Milton, Sebouh J. Paul, Sean Preins, Miguel Rodriguez and Weibin Zhang
We recently proposed a high-granularity calorimeter insert for the Electron-Ion Collider (EIC) that uses plastic scintillator tiles read out by SiPMs. Among its features are an ASIC-away-from-SiPM strategy for reducing cooling requirements and minimizing...
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Liping Pang, Desheng Ma, Yadan Zhang and Xiaodong Yang
A water evaporator is a phase change heat exchanger, as a heat sink, especially for high-speed flight vehicles. It is composed of internal channels for convective cooling and external fins for boiling. In this paper, six water evaporators, Hex0?Hex5, are...
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