About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
NEW SPEAKER: Laser Powder Bed Fusion Additive Manufacturing of Wicking Structures for Heat Pipes: Design, Fabrication, and Application |
Author(s) |
Adnen Mezghani, Edward W Reutzel, Abdalla Ramadan Nassar, Alexander Belchou |
On-Site Speaker (Planned) |
Alexander Belchou |
Abstract Scope |
Heat pipes (HP) are high-performing two-phase thermal management components. A porous wicking structure inside HPs provides capillary pressure, which in turn drives the two-phase fluid flow in the system. Recently, laser powder bed fusion (LPBF) additive manufacturing (AM) has received increasing consideration as a manufacturing medium for heat pipes. This is because AM offers increased design freedom and opportunities for cost reduction. However, the main problems that additively manufactured wicks face are (1) anisotropy in porosity and the presence of trapped pores, and (2) the difficulty in achieving a combination of small effective pore size and large porosity comparable to conventionally sintered wicks, leading to inferior performance. In this work, we present useful fabrication strategies for wicking structures, recent preliminary work on the implementation in hypersonic leading edges, common issues facing the design and fabrication of wicks for LPBF AM, and guidance for future research. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |