Modeling of Propellant Slosh Using Nastran Incompressible Fluid
Join ATA Engineering for a tutorial on how to use Nastran’s incompressible fluid modeling capabilities to analyze the behavior of fluid sloshing in propellant tanks. If you work with launch vehicles, spacecraft, or other liquid fueled tanks, and want to understand the state-of-the-art modeling methods, you won’t want to miss this live webinar.
Propellant modeling in launch vehicles (rockets) has historically been performed using point masses, springs, and rigid elements. This approach was useful when launch vehicles were modeled primarily with one-dimensional elements, such as beams, but it is somewhat outdated today, as most models are three-dimensional and use shell elements.
Nastran has introduced the Defined Fluid Mass method, which enables explicit modeling of fluids using three-dimensional incompressible fluid elements that are coupled to the tank’s structural elements. The method also allows the modeling of slosh dynamics when a free surface is present. Accurate representation of fluid mass and slosh dynamics is essential for loads and dynamics analyses, as well as for the development of robust guidance, navigation, and control algorithms. This modeling approach is applicable to a wide range of problems, from satellites to tanker ships.
No prior knowledge of slosh or fluid modeling is required for this webinar. By the end of the webinar, attendees will understand how to build, verify, and interpret fluid models with slosh using Nastran. A generic launch vehicle based on the geometry of the Falcon 9 will be used to guide attendees through the entire process using a structure representative of those commonly analyzed with this methodology. Siemens Simcenter Femap will be used as the pre- and post-processor.
ATA Engineering Speakers:
Daniel Kaminski, Business Development
Marc Eitner, Project Engineer