Award Date

5-1-2024

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Mechanical Engineering

First Committee Member

Samir Moujaes

Second Committee Member

Alexander Barzilov

Third Committee Member

Mohamed Trabia

Fourth Committee Member

Moses Karakouzian

Number of Pages

86

Abstract

This research will try to investigate the enhancement of heat transfer in a heat exchanger that is made of a corrugated tube that has a twisted plate inserted in it, the corrugation, and twisted plate are expected to increase the amount of heat transfer since the plate is acting as a connection between the center of the flow and the edges of the tube. The turbulence will cause an increase in pressure drop along the channel length, so the investigation will try to find the best compromise between the gain in heat transfer and loss of hydraulic energy by using well-established metrics. A positive heat transfer gain has been achieved if that metric indicates a value equal to or greater than 1. This CFD research will be compared with the experimental results by Zimparov (2012). After validating the CFD results it is proposed to investigate a new insert geometry to further improve the efficiency of the said heat exchanger.

The computational fluid dynamics (CFD) simulation was conducted to investigate and validate the CFD model, which evaluates the heat transfer performance in a spirally corrugated tube that has a twisted tape inserted. The heat transfer was then compared to a simple corrugated tube without the twisted tape and to a smooth tube with no corrugations and no twisted tape.

Disciplines

Engineering

File Format

pdf

File Size

2100

Degree Grantor

University of Nevada, Las Vegas

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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Engineering Commons

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