Abstract- This paper deals with the

Abstract- This paper deals with the mathematical model and
Computational analysis of flow induced vibration of Rocket
Engine Test Facility. In this set up, the main components of
piping elements which causes vibration is angle type valve.
Experimental study and analysis of flow induced vibration is to
be carried out by study the effect of turbulence of gas flow in
the piping system during the course of sub cooling of flight
static fire test or flow trial. Mathematical Model of pinned-pinned pipe carrying fluid has been developed. Governing
Equation of motion for pipe conveying fluid of real system has
been derived. The critical fluid velocity has been calculated by
analytical approach.
The vibration structure of pipeline is modeled by
using CATIA software as per specifications and the effect of
turbulence of gas flow in the piping element is analysed by
using Fluent and ANSYS software. The main piping element
which causing Flow Induced Vibration is angle type valve.
Analytically and computationally the dynamic behavior of
fluid flow through this valve is studied. Modal Analysis has
been carried out and found the natural frequency of six mode
shape. Experimental studies/flow trials are to be carried out to
validate the analytical and computational results.
Keywords: Flow Induced Vibration, Mathematical model,
Frequency, ANSYS, Fluent, Computational analysis
1. INTRODUCTION
The failure of components or parts occurred by the
reversal cyclic stress which is well below the yield stress of
the material. This type of failure is called a fatigue. The
vibration of structure or components is subjected to cyclic
stress and that will lead to Fatigue failure. The vibration
caused by a fluid flowing in or around a body is known as
Flow Induced Vibration (FIV). FIV best describe the
interaction that occurs between the fluid's dynamic forces
and a structure's inertial, damping and elastic forces.