One-Way Coupled Three-Dimensional Fluid-Structure Interaction Analysis of Zigzag-Channel Supercritical CO2 Printed Circuit Heat Exchangers
Nuclear Engineering and Design
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Printed circuit heat exchangers (PCHEs), with supercritical carbon dioxide (sCO2) as the working fluid, are being considered for use as recuperators and condensers in Brayton cycles for Next Generation Nuclear Plant (NGNP) projects as well as other power generation and heat transfer applications. A few experimental and numerical structural assessments of these PCHEs have been conducted, but all have been somewhat limited due to the difficulty measuring actual stresses in an operating PCHE and the computer resources needed to accurately conduct a fluid–structure interaction (FSI) examination using finite element analysis (FEA). This paper examines a previous pseudo two-dimensional (2D) study of a sodium-sCO2 PCHE, linear elastic model and multilinear elastic hardening model results are included. Next, previously unperformed, three-dimensional (3D) one-way coupled FSI studies of two notional zigzag-channel, sCO2 PCHEs are conducted. All results are evaluated against the stress intensity limits set forth by the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) Sections III and VIII. Most of the examined PCHEs meet the requirements for general use but exceed the maximum allowable stress intensities for application as nuclear components.
Printed circuit heat exchanger; Supercritical CO2; Fluid-structure interaction; Boiler and pressure vessel code
Electro-Mechanical Systems | Heat Transfer, Combustion
One-Way Coupled Three-Dimensional Fluid-Structure Interaction Analysis of Zigzag-Channel Supercritical CO2 Printed Circuit Heat Exchangers.
Nuclear Engineering and Design, 358