Physics Based Model for Cryogenic Chilldown and Loading. Part I: Algorithm

Luchinsky, Dmitry G.; Smelyanskiy, Vadim N.; Brown, Barbara

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NASA NTRS · 20150000836

Physics Based Model for Cryogenic Chilldown and Loading. Part I: Algorithm

Luchinsky, Dmitry G.·Smelyanskiy, Vadim N.·Brown, Barbara

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Abstract

We report the progress in the development of the physics based model for cryogenic chilldown and loading. The chilldown and loading is model as fully separated non-equilibrium two-phase flow of cryogenic fluid thermally coupled to the pipe walls. The solution follow closely nearly-implicit and semi-implicit algorithms developed for autonomous control of thermal-hydraulic systems developed by Idaho National Laboratory. A special attention is paid to the treatment of instabilities. The model is applied to the analysis of chilldown in rapid loading system developed at NASA-Kennedy Space Center. The nontrivial characteristic feature of the analyzed chilldown regime is its active control by dump valves. The numerical predictions are in reasonable agreement with the experimental time traces. The obtained results pave the way to the development of autonomous loading operation on the ground and space.

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Luchinsky, Dmitry G., Smelyanskiy, Vadim N., Brown, Barbara. 2014-02-01. Physics Based Model for Cryogenic Chilldown and Loading. Part I: Algorithm. https://ntrs.nasa.gov/citations/20150000836

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