Cryogenic Tanks are pressurized by inert gas such as Helium or Nitrogen to maintain the required pressure of the propellant delivered to the turbo-pump of a liquid rocket engine. Thermo-fluid system simulation tools are used to analyze the pressurization process of a cryogenic tank. Most system level codes (GFSSP and ROCETS) use single node1 to represent ullage which is the gaseous space in the tank. Ullage space in a cryogenic tank is highly stratified because the entering inert gas is at ambient temperature whereas the liquid propellant is at a cryogenic temperature. A single node model does not account for the effect of temperature gradient in the ullage. High fidelity Navier-Stokes based CFD model of Tank Pressurization is not practical for running a long duration transient model with thousands and millions of nodes. A possible recourse is to construct a multi-node model with system level code that can account for ullage stratification.


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    Title :

    Multi-Node Modeling of Cryogenic Tank Pressurization System Using Generalized Fluid System Simulation Program



    Conference:

    AIAA Propulsion and Energy Forum and Exposition ; 2019 ; Indianapolis, IN, United States


    Publication date :

    2019-08-19


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Multi-Node Modeling of Cryogenic Tank Pressurization System using Generalized Fluid System Simulation Program

    Bandyopadhyay, Alak / Majumdar, Alok K. / Leclair, Andre C. et al. | NTRS | 2019



    MULTI-NODE MODELING OF CRYOGENIC TANK PRESSURIZATION SYSTEM USING GENERALIZED FLUID SYSTEM SIMULATION PROGRAM (GFSSP)

    Bandyopadhyay, Alak / Majumdar, Alok K. / LeClair, Andre et al. | TIBKAT | 2019