Theoretical and experimental study of flow induced vibration during external two-phase flow across tube bundle

• Grant number: 14/06902-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: December 01, 2014
• End date: May 30, 2016
• Field of knowledge: Engineering - Mechanical Engineering - Transport Phenomena
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Gherhardt Ribatski
• Grantee: Fabio Toshio Kanizawa
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated scholarship(s): 15/00854-5 - Characterization of external two-phase flow across tube bundles, BE.EP.PD

Abstract

It is estimated that more than half of shell-and-tube heat exchangers in industry operate under two-phase flow condition in the shell side, nonetheless the number of research and publications related to the external flow is reduced in comparison to studies concerning intube flow. Flow induced vibration is a major problem for heat exchanger designers, as it can cause reduction of equipment life cycle due to fatigue and fretting wear, or even worse it can imply in heat exchanger failure within few working hours in the case of vibrations induced by fluid-elastic instabilities. In general, hydrodynamic loads during two-phase flow are considerably more severe than that for single-phase flow conditions, due to the interaction between the tube and two-phase flow structure. Based on the above discussed, it can be concluded that additional studies are necessary focusing concomitantly on external two-phase flows across tube bundles, and flow induced vibrations applied to shell-and-tube heat exchangers are necessary. In this context, the present proposal has as main objective the experimental analysis of flow induced vibrations in tube bundle during external two-phase crossflow. The study will be performed using an experimental facility designed and built during the doctoral program of the candidate. His thesis has focused on an experimental evaluation of pressure drop, flow pattern and superficial void fraction during air-water external crossflow in tube bundle. It is expected the identification of load patterns for distinct flow patterns, including amplitude and frequency of hydrodynamic loads. It is also expected the experimental determination of dynamic damping for different operational conditions, as it is a key parameter for the dynamic analysis of the system. During the post-doctorate of the candidate is planned six month of post-doctoral internship at Kobe University, Japan, under supervision of Professor Akio Tomiyama. During this period the candidate will be learning and applying 3D-PIV techniques to characterize the velocity field during external flows across tube bundles. (AU)

Scientific publications

(8)

(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)

KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT. Void fraction and pressure drop during external upward two-phase cross flow in tube bundles - part II: Predictive methods. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v. 65, p. 210-219, JUN 2017. (15/00854-5, 14/06902-9, 10/20670-2)

KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT. Void fraction predictive method based on the minimum kinetic energy. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 38, n. 1, p. 209-225, JAN 2016. (15/00854-5, 14/06902-9, 10/20670-2)

KANIZAWA, FABIO TOSHIO; MOGAJI, TAYE STEPHEN; RIBATSKI, GHERHARDT. A new model for flow boiling heat transfer coefficient inside horizontal tubes with twisted-tape inserts. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, v. 61, p. 55-68, JAN 2016. (15/00854-5, 14/06902-9, 10/20670-2)

KANIZAWA, FABIO TOSHIO; TIBIRICA, CRISTIANO BIGONHA; RIBATSKI, GHERHARDT. Heat transfer during convective boiling inside microchannels. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v. 93, p. 566-583, FEB 2016. (11/01372-3, 14/06902-9, 15/00854-5, 10/20670-2)

KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT. Two-phase flow patterns across triangular tube bundles for air-water upward flow. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, v. 80, p. 43-56, APR 2016. (15/00854-5, 14/06902-9, 10/20670-2)

ALVAREZ-BRICENO, RICARDO; KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT; DE OLIVEIRA, LEOPOLDO P. R.. Updated results on hydrodynamic mass and damping estimations in tube bundles under two-phase crossflow. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, v. 89, p. 150-162, MAR 2017. (14/06902-9)

ALVAREZ-BRICENO, RICARDO; KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT; DE OLIVEIRA, LEOPOLDO P. R.. Validation of turbulence induced vibration design guidelines in a normal triangular tube bundle during two-phase crossflow. JOURNAL OF FLUIDS AND STRUCTURES, v. 76, p. 301-318, JAN 2018. (14/06902-9, 10/20670-2)

KANIZAWA, FABIO TOSHIO; RIBATSKI, GHERHARDT. Void fraction and pressure drop during external upward two-phase crossflow in tube bundles - part I: Experimental investigation. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v. 65, p. 200-209, JUN 2017. (15/00854-5, 14/06902-9, 10/20670-2)