Liquid sloshing within spacecraft propellant tanks causes rapid energy dissipation at resonant modes, which can result in attitude destabilization of the vehicle. Identifying resonant slosh modes currently requires experimental testing and mechanical pendulum analogs to characterize the slosh dynamics. Computational Fluid Dynamics (CFD) techniques have recently been validated as an effective tool for simulating fuel slosh within free-surface propellant tanks. Propellant tanks often incorporate an internal flexible diaphragm to separate ullage and propellant which increases modeling complexity. A coupled fluid-structure CFD model is required to capture the damping effects of a flexible diaphragm on the propellant. ANSYS multidisciplinary engineering software employs a coupled solver for analyzing two-way Fluid Structure Interaction (FSI) cases such as the diaphragm propellant tank system. Slosh models generated by ANSYS software are validated by experimental lateral slosh test results. Accurate data correlation would produce an innovative technique for modeling fuel slosh within diaphragm tanks and provide an accurate and efficient tool for identifying resonant modes and the slosh dynamic response.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    CFD Fuel Slosh Modeling of Fluid-Structure Interaction in Spacecraft Propellant Tanks with Diaphragms



    Conference:

    51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference ; 2010 ; Orlando, FL, United States


    Publication date :

    2010-04-12


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    CFD Fuel Slosh Modeling of Fluid-Structure Interaction in Spacecraft Propellant Tanks with Diaphragms

    Sances, D. / Gangadharan, S. / Sudermann, J. et al. | British Library Conference Proceedings | 2010


    CFD Fuel Slosh Modeling of Fluid-Structure Interaction in Spacecraft Propellant Tanks with Diaphragms

    Sances, Dillon / Gangadharan, Sathya / Sudermann, James et al. | AIAA | 2010


    Fluid Sloshing Characteristics in Spacecraft Propellant Tanks with Diaphragms

    Green, Steve / Burkey, Russell / Viana, Flavia et al. | NTRS | 2007


    Fluid Sloshing Characteristics in Spacecraft Propellant Tanks with Diaphragms

    Green, Steve / Burkey, Russell / Viana, Flavia et al. | AIAA | 2007


    Model of Spacecraft Fuel Slosh with Diaphragms in Microgravity

    Silvernail, Nathan / Sances, Dillon / Gangadharan, Sathya et al. | AIAA | 2009