| Texto completo | |
| Autor(es): |
Rocha, Douglas Martins
[1]
;
Kanizawa, Fabio Toshio
[2]
;
Hayashi, Kosuke
[3]
;
Hosokawa, Shigeo
[4]
;
Tomiyama, Akio
[3]
;
Ribatski, Gherhardt
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [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
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 42, n. 4 MAR 27 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
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) | |
| Processo FAPESP: | 15/00854-5 - Caracterização de escoamento bifásico externo a banco de tubos |
| Beneficiário: | Fabio Toshio Kanizawa |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |
| Processo FAPESP: | 16/20200-2 - Avaliação teórico experimental do campo de velocidades em escoamentos externos a banco de tubos através de velocimetria por filtros espaciais |
| Beneficiário: | Douglas Martins Rocha |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |