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- W4283270692 abstract "The autoclave is a large oven with a controlled internal environment. In the process of curing a composite part via autoclave, one of the biggest challenges is the prediction of part quality and completeness. If these parameters are inaccurately monitored, or if their status is unknown at the removal of the part from the oven, significant part defects may occur. Our approach consists of the following four steps: 1) multiphysics modeling of autoclave; 2) extraction of local heat transfer and friction coefficients using a high-resolution CFD model; 3) specification of transient characteristic flow velocity, temperature, and pressure with composite parts inside autoclave; and 4) coupling of the CFD/heat transfer model with the cure kinetic model. In this paper, the capability of the CFD-ACE+ multiphysics software tool, originally developed by CFDRC, in modeling Econoclave EC5 autoclave essential physics of heater, cool radiator, fan, h-slot, floor, and turbulence was successfully demonstrated. Simulation of a small autoclave showed a very good comparison with experimental measurement of heat flux using a calorimeter at three stations. A procedure to extract and correlate the heat transfer coefficient (HTC) around the complex surface of composite parts under typical autoclave operating flow conditions has been developed, demonstrated, and validated. Comparison of extracted HTC for vertical flat plate (natural convection) and horizontal flat plate showed very good agreements with the classic textbook expressions. The application of the extracted HTC from CFD to a cure kinetic model to predict composite temperature field within an autoclave was demonstrated." @default.
- W4283270692 created "2022-06-23" @default.
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- W4283270692 date "2022-06-20" @default.
- W4283270692 modified "2023-09-27" @default.
- W4283270692 title "A Multiphysics and Multiscale Tool to Predict Transient Boundary Conditions in an Autoclave" @default.
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- W4283270692 doi "https://doi.org/10.2514/6.2022-3368" @default.
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