Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
PRESSURE AND SHEAR STRESS ANALYSIS IN A TRIANGULAR TUBE BUNDLE BASED ON EXPERIMENTAL FLOW VELOCITY FIELD
Submission Author:
Douglas Martins Rocha , MG
Co-Authors:
Douglas Martins Rocha, Fabio Toshio Kanizawa, Gherhardt Ribatski
Presenter: Douglas Martins Rocha
doi://10.26678/ABCM.ENCIT2018.CIT18-0759
Abstract
This paper presents the experimental vector velocity field obtained in a triangular tube bundle with tubes of 20 mm O.D. and transverse pitch of 25.2 mm based on the Spatial Filter Velocimetry technique. The experiments were conducted under single-phase water flows with Reynolds ranging from 443 to 1842. Based on the experimental results, the pressure was estimated by solving the Poisson equation, and the shear stress around the tubes was estimated calculating the viscous and Reynolds stresses. The turbulence strength and the flow vorticity were calculated and discussed to analyze the flow structure. All the analyses were performed using a second order finite difference scheme to estimate the partial derivatives. The results indicate that the Spatial Filter Velocimetry technique provides accurate velocity data and is suitable to be applied in complex geometries.
Keywords
External flow, tube bundle, Spatial Filter Velocimetry, Velocity field
