A PC-based collapse factor analysis for high pressure cryogenic systemsA collapse factor simulation computer program, suitable for use on personal computers, for supercritical cryogen system pressurization is examined. The available literature is previewed, individual component models are developed, and the overall simulation program logic is examined. Extensive use is made of existing thermodynamic and transport property evaluation packages. Heat transfer is estimated using natural convection correlations, and transient wall heat conduction is considered. Examples of the simulation are demonstrated for two facilities. Partial validation is achieved by comparing the simulation output with data from an existing test facility. Preliminary results indicate that the collapse factors will seldom exceed 1.15 during supercritical operation of high-pressure cryogenic systems. Recommendations for improvements in the component models and the simulation are made.
Document ID
19920071496
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hodge, B. K. (NASA John C. Stennis Space Center Bay Saint Louis, MS, United States)
Koenig, Keith (Mississippi State University Mississippi State, United States)