Water jet impingement in run-out table cooling
department or school: Applied Science, Faculty of
department or school: Mechanical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Alakbari, Abdullah Al
issued: 2023-08-23T21:22:30Z
issued: 2023
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: cooling process on a run-out table is a critical step that governs the final microstructure and the mechanical properties of the produced steels. In this research, we use a more recent method for obtaining the thermal history on the plate surface, which is the infrared thermal imaging technique. This technique has the advantage of capturing the surface temperature history remotely and with no contact with the plate. In this work, controlled cooling experiments under transient conditions were conducted on a hot stationary plate using an impinging top circular nozzle and a thermal camera to capture the temperature history. The measurements from the thermal camera (conducted in Abu Dhabi University) are compared with the conventional thermocouple measurements (University of British Columbia). The comparisons showed that the infrared camera gives more complete picture of the thermal history and more accurate results than thermocouple measurements. Reasons for the inaccuracy of the thermocouple (T/C) measurements include T/C response time, and distortion of the thermal field by the method of installation. These reasons are discussed in detail in the thesis. Additionally, we introduce a transient multiphase CFD numerical simulation to obtain the temperature profile on the plate surface and compare it with the experiments conducted. The numerical simulation was done using the Ansys-Fluent CFD software. A two-dimensional model was used with a highly intensive mesh near the wall region based on the wall y+ number. The surface temperature graphs for both measurements and simulation are compared at different radial locations (stagnation zone and parallel zone). Additionally, the obtained CFD results were verified and compared with the surface temperature of the experimental data.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/85594
note: Water Jet Impingement in Run-Out Table Cooling by Abdullah Al Akbari B.Sc., Abu Dhabi University, UAE, 2016 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Mechanical Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August 2023 © Abdullah Al Akbari, 2023 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: Water Jet Impingement in Run-Out Table Cooling submitted by Abdullah Al Akbari in partial fulfilment of the requirements for the degree of Master of Applied Science in Mechanical Engineering Examining Committee: Dr. Mohamed Gadala, Professor, Mechanical Engineering, UBC Co-supervisor Dr. Dana Grecov, Professor, Mechanical Engineering, UBC Co-supervisor Dr. Xiaoliang Jin, Associate Professor, Mechanical Engineering, UBC Supervisory Committee Member Dr. Nima Atabaki, Associate Professor of Teaching, Mechanical Engineering, UBC Additional Examiner iii Abstract The cooling process on a run-out table is a critical step that governs the final microstructure and the mechanical properties of the produced steels. In this research, we use a more recent method for obtaining the thermal history on the plate surface, which is the infrared thermal imaging technique. This technique has the advantage of capturing the surface temperature history remotely and with no contact with the plate. In this work, controlled cooling experiments under transient conditions were conducted on a hot stationary plate using an impinging top circular nozzle and a thermal camera to capture the temperature history. The measurements from the thermal camera (conducted in Abu Dhabi University) are compared with the conventional thermocouple measurements (University of British Columbia). The comparisons showed that the infrared camera gives more complete picture of the thermal hi…
has type: Thesis/Dissertation
date issued: 2023-11
is shown at: 10.14288/1.0435555
language: eng
degree discipline: Mechanical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Gadala, Mohamed
contributor: Grecov, Dana
type: Text
identifier URI: http://hdl.handle.net/2429/85594