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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pressure and shear stress analysis in a normal triangular tube bundle based on experimental flow velocity field

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Author(s):
Rocha, Douglas Martins [1] ; Kanizawa, Fabio Toshio [2] ; Hayashi, Kosuke [3] ; Hosokawa, Shigeo [4] ; Tomiyama, Akio [3] ; Ribatski, Gherhardt [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mech Engn, Heat Transfer Res Grp, Sao Carlos, SP - Brazil
[2] Univ Fed Fluminense, Sch Engn, Dept Mech Engn, Niteroi, RJ - Brazil
[3] Kobe Univ, Grad Sch Engn, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501 - Japan
[4] Kansai Univ, Fac Societal Safety Sci, 7-1 Hakubai, Takatsuki, Osaka 5691098 - Japan
Total Affiliations: 4
Document type: Journal article
Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 42, n. 4 MAR 27 2020.
Web of Science Citations: 0
Abstract

This paper presents the experimental vector velocity field obtained through the spatial filter velocimetry technique in a normal triangular tube bundle test section with tubes of 20 mm O.D. and transverse pitch of 25.2 mm. The experiments were conducted for water flows and Reynolds numbers ranging from 447 to 1842. The pressure field was estimated based on the velocity results by solving the Poisson equation. The shear stress around the tubes was analyzed calculating the viscous and Reynolds stresses. The results for turbulence strength and flow vorticity were calculated and discussed. 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 to complex geometries. In addition, the obtained velocity fields show that the SFV technique is capable of capturing asymmetric flow distributions, which switch from time to time, indicating a suitable spatial and temporal resolution for the experimental conditions evaluated in the present study. (AU)

FAPESP's process: 15/00854-5 - Characterization of external two-phase flow across tube bundles
Grantee:Fabio Toshio Kanizawa
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 16/20200-2 - Theoretical and experimental study on velocity profile during single and two-phase flow across tube bundles based on spatial filter velocimetry technique
Grantee:Douglas Martins Rocha
Support Opportunities: Scholarships in Brazil - Doctorate