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首页> 外文会议>14th cryogenics 2017 >HIGH POROSITY OPEN-CELL METAL FOAM AS POTENTIAL CANDIDATE FOR SPACE CRYOGENIC RADIATOR
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HIGH POROSITY OPEN-CELL METAL FOAM AS POTENTIAL CANDIDATE FOR SPACE CRYOGENIC RADIATOR

机译：高孔隙率的开孔金属泡沫作为潜在的空间致冷辐射体

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摘要

Passive cryogenic radiators are inherent functional devices of the thermal cooling systems in space vehicles.rnThe present article suggests the inclusion of high porosity open-cell metal foams, a recent addition to lightweightrnmaterials, as likely candidates for passive radiator surfaces. Porous nature of metal foam allowsrnpenetration of thermal radiation within few layers from its surface. Aluminium 10 PPI foam having 90.8 %rnporosity has been studied in this work. A three-dimensional topographical image of the actual foam samplernhas been obtained from X-ray Micro-Computed Tomography scanning. Representative section of this threedimensionalrnmorphology is then employed to simulate ray tracing computationally using COMSOLrnMultiphysics software. Furthermore, cool down of this porous foam under the effect of radiative heat transferrnsubjected to space-like conditions has been determined.
机译：无源低温散热器是航天器热冷却系统固有的功能性设备。本文建议将高孔隙率的开孔金属泡沫（轻质材料的最新添加）包括在内，以作为无源散热器表面的候选材料。金属泡沫的多孔性质允许热辐射从其表面渗透到几层之内。在这项工作中，已经研究了具有90.8％孔隙率的10 PPI铝泡沫。实际泡沫样品的三维地形图图像是通过X射线微计算机断层扫描技术获得的。然后，使用COMSOLrnMultiphysics软件对该三维形态学的代表性部分进行计算，以模拟射线追踪。此外，已经确定了该多孔泡沫在受到空间状条件的辐射传热的影响下的冷却。

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    《14th cryogenics 2017》|2017年|447-451|共5页
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    Dixit Tisha; Ghosh Indranil;

  • 作者单位

    Cryogenic Engineering Centre, Indian Institute of Technology Kharagpur Kharagpur, 721302, India, tisha8889@iitkgp.ac.in;

    Cryogenic Engineering Centre, Indian Institute of Technology Kharagpur Kharagpur, 721302, India,indranil@hijli.iitkgp.ernet.in;

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