The glycol water heat exchanger for LNG ships prevents the brittle fracture of the ship caused by cargo holds storing LNG at 163 ° C by supplying heated glycol water to Cofferdams.
This study was carried out to analyze the structural stability of a glycol water heat exchanger for brittle fracture prevention of LNG carriers by applying unidirectional fluid - structure interaction (FSI).
After generating the lattice using the 3D modeling shape data, the CFD analysis was performed on the flow field inside the heater.
The load data obtained from the CFD analysis was mapped to the structural analysis model and one way fluid-structure interaction analysis was performed.
The FSI analysis is performed in ANSYS Workbench; the ANSYS CFX is used for flow field and ANSYS Mechanical is used for structural field, respectively.
Structural stability was evaluated by analyzing the maximum stress and maximum displacement.