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ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
BEHAVIOR OF TEMPERATURE GRADIENTS AND VELOCITY FIELDS IN FUEL OIL EXPORTATION THROUGH A 12 INCHES TOROIDAL STRETCH REPRESENTED BY TWO CYLINDRICAL SURFACES
Submission Author:
Flavio Peres Amado , RJ , Brazil
Co-Authors:
EDIOMEDSON SALES
Presenter: EDIOMEDSON SALES
doi://10.26678/ABCM.ENCIT2016.CIT2016-0086
Abstract
The proposal of this work is to predict temperature gradients and velocity fields of a flow in an insulated stretch of a curved tube, through two cylindrical surfaces. Particularly, it was chosen the vertical central plane and the horizontal central surface of the curve. The curvature radius is considered to be the same length of the pipe diameter. Fields of velocity achieved as well as temperature gradients developed are built from initial conditions caught from the final values of the previous flow through the straight stretch. Three conditions of flow rate and initial temperature are tested, all of them at a very low Reynolds and Dean numbers and very high Prandtl number. Simulations are performed through finite difference method and a commercial code accomplishes the same simulation to be compared with. The practical case represented in this study is the transportation of fuel oil between a refinery and a distribution terminal in Brazilian Northeastern, where the initial stretch is aerial and buries into the ground with a vertical curve of 90 degrees. Results obtained through the cylindrical surfaces show good coincidence with results of the commercial code and literature and could represent an alternative way to treat the classical issue of the flow in a toroidal stretch.
Keywords
Gradients of Temperature, Velocity fields, Numerical simulation
