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DOE OSTI · 1763571

Compact Diffusion Bonded Heat Exchanger Fatigue Life Simulations (Final Report)

Schalansky, Carl P.·Zada, Kyle·Lance, Blake·Koehler, Timothy Philip
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Abstract

Compact diffusion bonded heat exchangers are essential for high pressure heat exchange, but they are subject to thermal fatigue and ramp rate limitations. Simulation of these geometries is challenging with a large range of length and time scales from thousands of mm-sized microchannels inside a m-sized heat exchanger. Multi-physics simulations including thermal, fluid, and solid mechanics components are being used to predict stress within the heat exchangers under these conditions. These predictions can then be used to understand thermal ramp rate limitations while keeping maximum stresses low as well as fatigue life predictions from well-known empirical models.

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Schalansky, Carl P., Zada, Kyle, Lance, Blake, Koehler, Timothy Philip. 2020-06-01. Compact Diffusion Bonded Heat Exchanger Fatigue Life Simulations (Final Report). https://doi.org/10.2172/1763571

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