Nuclear Engineering ETDs

Publication Date

Fall 12-13-2025

Abstract

Several studies have been done on the effects of twisted tubes in heat exchangers, including the correlations that relate the flow parameters to the heat transfer and pressure drop experienced. These studies are new, with the earliest being performed in 1982. As such, there are many correlations covering only certain flow parameters and geometrical configurations such as the Reynolds number and modified Froude number.

This thesis attempts to cover flow regimes and tube geometries not yet studied and yield correlations. Data are gathered from heat exchangers featuring twisted tubes with water as the working fluid. It is noticed that the longer the twist pitch, the lower the friction factor and pressure drop are. Finally, correlations are presented for both tube-side and shell-side heat transfer, and pressure drop.

Keywords

Twisted Tube, Correlation, Heat Exchangers, friction factor, Nusselt Number

Document Type

Thesis

Language

English

Degree Name

Nuclear Engineering

Level of Degree

Masters

Department Name

Nuclear Engineering

First Committee Member (Chair)

Dr. Minghui Chen

Second Committee Member

Dr. Cassiano Endres de Oliveira

Third Committee Member

Dr. Eric Lang

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