Open AccessFluid structure interaction simulations and experimental validation of a pipeline immersed in liquid
Author(s) -
D. Kumaresan,
A. Lekshmi,
Kodati Srinivas,
Suresh Mathew Thomas,
S. Sruthy
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1355/1/012002
Subject(s) - propellant , fluid–structure interaction , pipeline transport , vibration , marine engineering , computational fluid dynamics , added mass , cabin pressurization , engineering , natural frequency , pipeline (software) , structural engineering , mechanical engineering , aerospace engineering , acoustics , finite element method , physics
In launch vehicles, there are number of fluid systems to cater to various requirements like propellant filling, draining to/from tanks, venting of ullage gases, pressurization of the tanks, feed systems to convey propellants to engine from tanks, lines to convey command gas to actuate various valves etc. These pipe lines are subjected to environmental loads i.e. vibration loads when the launch vehicle starts its course to place the satellite into its designated orbit. It is essential to study the dynamic characteristics of these pipe lines for the design of them for vibration loads. The response of these pipelines depends on fluid environment in which they are immersed. If a pipe line is immersed in liquid, its dynamic characteristics vary largely from that of a pipeline vibrating in ambient environment (air). If the pipe line immersed in fluid, natural frequency reduces and damping increases due to the added mass and fluid viscosity respectively. In order to study these effects, FSI studies are carried out on a pipe line immersed in water using ANSYS CFD and Mechanical software. Convergence studies with respect to time scale are carried out to benchmark the simulation procedure. This simulation procedure is validated by conducting the experiments.