Madhusoodanan Mannoor
Dong-A University, Republic of Korea (South)
Title: Finite element analysis and optimization of cylindrical resonant photoacoustic cell
Biography
Biography: Madhusoodanan Mannoor
Abstract
Photo acoustic phenomenon is useful to develop technologies for spectroscopic, microscopic and imagining applications. Of late, it has gained wider significance in biomedical engineering. Photo acoustic spectroscopy has been recognised as an effective and inexpensive method for measurement of concentration of gaseous compounds. Sensitivity of resonant photo acoustic cell, which is defined as its ability to generate high amplitude of acoustic pressure at the location of microphone, for a given amount of absorbed radiation, is a key design objective of the cell. Various factors effect sensitivity of the photoacoustic cell and its geometry is the most deciding one. In this work, photoacoustic response of cylindrical resonant cells is simulated by solving Navier-Stokes equation, continuity equation, energy equation and the equation of state, using FEM analysis. Numerical results are validated with experimental results reported in the literature. To find the optimum dimensions of the resonant cell and the buffer cell, Taguchi method of design of experiments is applied. Numerical model with optimized dimensions is found to have better sensitivity.