About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing for Energy Applications V
|
Presentation Title |
Surface Roughness of Heat Exchanger Flow Channels Manufactured with Directed Energy Deposition |
Author(s) |
Luis Nuņez, Minseop Song, Sunming Qin, Piyush Sabharwall, Isabella J van Rooyen |
On-Site Speaker (Planned) |
Luis Nuņez |
Abstract Scope |
Additive manufacturing (AM) presents techniques which can benefit the design of compact heat exchangers (HXs) by further enhancing thermal performance and reducing economic costs. Powder-based AM methods such as directed energy deposition (DED) suffer from high as-built surface roughness. Rough surfaces in flow channels can benefit thermal performance but conventionally increase the frictional and pressure losses. Rough surfaces also can exhibit hydrophobic properties due to solid-liquid fraction of wetting contact and can decrease the frictional losses and fouling. This study focuses on the feasibility of fabricating 316L stainless steel HX flow channels with DED and measurements of arithmetic mean average surface roughness with laser-optical microscopy. A HX numerical and analytical model is developed and compared with experimental data. Hydrophobic potential for Cassie-Baxter and Wenzel models are also analyzed and presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Powder Materials, Modeling and Simulation |