A multizone model is used to predict both the self-pressurization and pressure control behavior of a ground-based experiment. The multizone model couples a finite element heat conduction model of the tank wall to the bulk conservation equations in the ullage and the liquid. Comparisons are made to the experimental data presented in a companion paper. Results suggest that the multizone model can predict self-pressurization behavior over a variety of test conditions. The model is also used to predict the pressure control behavior when a subcooled axial mixing jet is used to thermally destratify and cool the bulk liquid. For fast jet speeds, the multizone model does a reasonably predict the pressure collapse behavior. Comparisons were also made between the data and a homogeneous thermodynamic model. These comparisons highlight the deficiencies of the homogeneous modeling approach.
Investigation of Tank Pressurization and Pressure Control—Part II: Numerical Modeling
Manuscript received October 22, 2012; final manuscript received February 3, 2013; published online September 27, 2013. Assoc. Editor: Jovica R. Riznic.
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Barsi, S., and Kassemi, M. (September 27, 2013). "Investigation of Tank Pressurization and Pressure Control—Part II: Numerical Modeling." ASME. J. Thermal Sci. Eng. Appl. December 2013; 5(4): 041006. https://doi.org/10.1115/1.4023892
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