Theoretical and experimental study on velocity profile during single and two-phase flow across tube bundles based on spatial filter velocimetry technique

• Grant number: 16/20200-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2017
• End date: November 30, 2020
• Field of knowledge: Engineering - Mechanical Engineering - Transport Phenomena
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Gherhardt Ribatski
• Grantee: Douglas Martins Rocha
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

For the development of models that can accurately predict pressure drop, FIVs (Flow Induced Vibrations), and heat transfer is essential to characterize the flow field along the heat exchanger. However, due to the limited number of highly detailed results with reduced uncertainty, there are no fully established analytical models able to predict such parameters for a wide range of operating conditions. In this context, the Heat Transfer Research Group of EESC-USP has successfully developed studies on FIVs and two-phase flow across tube bundles. Thus, in order to obtain unpublished and accurate experimental results that contribute to better understanding of turbulence phenomena, FIVs, pressure drop and heat transfer in external flows of tube bundle, this project aims to perform a theoretical and experimental study to characterize the velocity field externally a tube bundle using the technique of spatial filter velocimetry (SFV). Based on the velocity profile results is expected to characterize the forces acting on the tubes and develop analytical models to predict these forces, the pressure drop and the void fraction. The SFV technique is still under development at the University of Kobe and at EESC-USP. Therefore, this research has great innovative potential, which allows to obtain significant results and contributes for the SFV technique improvement, especially when applied to two-phase flows. It is noteworthy that the experimental apparatus is under operating conditions. Thus, the experimental step for this project only requires the design of appropriate test sections for the correct application of SFV technique. Finally, the candidate fills the requirements to develop an excellent doctoral research. His master dissertation concerns an experimental investigation on multiphase flows area and he was awarded as the student with highest academic performance among graduates of Mechanical Engineering at EESC-USP in 2013. (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROCHA, DOUGLAS MARTINS; KANIZAWA, FABIO TOSHIO; HAYASHI, KOSUKE; HOSOKAWA, SHIGEO; TOMIYAMA, AKIO; RIBATSKI, GHERHARDT. Pressure and shear stress analysis in a normal triangular tube bundle based on experimental flow velocity field. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 42, n. 4, MAR 27 2020. (15/00854-5, 16/20200-2)

ROCHA, DOUGLAS MARTINS; KANIZAWA, FABIO TOSHIO; HAYASHI, KOSUKE; HOSOKAWA, SHIGEO; TOMIYAMA, AKIO; RIBATSKI, GHERHARDT. Velocity field characterization of single-phase flows across a tube bundle through spatial filter velocimetry. EXPERIMENTAL THERMAL AND FLUID SCIENCE, v. 147, p. 21-pg., 2023-05-19. (16/20200-2)

ROCHA, DOUGLAS MARTINS; KANIZAWA, FABIO TOSHIO; HAYASHI, KOSUKE; HOSOKAWA, SHIGEO; TOMIYAMA, AKIO; RIBATSKI, GHERHARDT. Characterization of the Velocity Field External to a Tube Bundle Using Spatial Filter Velocimetry Based on Variable Meshing Scheme. FLOW TURBULENCE AND COMBUSTION, v. 105, n. 4, p. 25-pg., 2020-04-24. (15/00854-5, 16/20200-2)

ROCHA, DOUGLAS MARTINS; KANIZAWA, FABIO TOSHIO; HAYASHI, KOSUKE; HOSOKAWA, SHIGEO; TOMIYAMA, AKIO; RIBATSKI, GHERHARDT. Characterization of the Velocity Field External to a Tube Bundle Using Spatial Filter Velocimetry Based on Variable Meshing Scheme. FLOW TURBULENCE AND COMBUSTION, v. 105, n. 4, SI, APR 2020. (15/00854-5, 16/20200-2)

ROCHA, DOUGLAS MARTINS; KANIZAWA, FABIO TOSHIO; HAYASHI, KOSUKE; HOSOKAWA, SHIGEO; TOMIYAMA, AKIO; RIBATSKI, GHERHARDT; ASME. A COMPARISON OF THE FLOW STRUCTURE IN A NORMAL TRIANGULAR TUBE ARRAY OBTAINED BASED ON THE SFV TECHNIQUE AND ON A CFD ANALYSIS. PROCEEDINGS OF THE ASME 2020 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2020), VOL 1, v. N/A, p. 12-pg., 2020-01-01. (16/20200-2)