Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
A Multi-Physical Modeling Approach to “Puffing” In Mechanical Face Seals
Submission Author:
Michael Gani , Copenhagen , Denmark
Co-Authors:
Michael Gani, William Sidelmann Schultz Steeval, Ilmar Santos
Presenter: Bruno Rende
doi://10.26678/ABCM.DINAME2023.DIN2023-0064
Abstract
In this work a transient model of mechanical face seals in two-phase flow is presented and used to study "puffing" phenomena. The model is one-dimensional, axisymmetric, and uses a multi-physical approach to describe transient two-phase flow. This includes the equations of motion to describe the transient seal opening, a finite-volume implementation of the Reynolds and Energy equations, and a finite-element model of transient heat conduction in the seal rings, which has a dominating effect on seal performance. Transition between liquid and vapor phases is described using a thermodynamic saturation model based on the IAPWS-97 standard. This yields a system of Non-Linear Differential-Algebraic Equations (DAE), which is solved numerically in time. The model is validated for a steady-state case, and then applied study the transient behavior of mechanical face seals. The results of a simulation demonstrate damped "puffing" oscillations which provide some qualitative insights into this type of behavior.
Keywords
mechanical face seals, phase change, puffing, Numerical simulation, seal dynamics
