Title

CFD Modeling of Flow through Twisted Tape

Presenter Information

Jack Fletcher

Department

Nuclear Engineering and Radiation Science

Major

Nuclear Engineering

Research Advisor

Mueller, Gary Edward, 1954-

Advisor's Department

Nuclear Engineering and Radiation Science

Funding Source

Mining and Nuclear Engineering Department

Abstract

Sustained nuclear fusion subjects components to extremely high heat fluxes. Heat transfer enhancement techniques are necessary to ensure the survival of these components in such conditions; one enhancement mechanism currently proposed for use in toroidal fusion devices such as Wendelstein 7-X (W7-X) is a twisted tape swirltube inserted in a monoblock. Swirl flow induced by the twisted tape is expected to increase the critical heat flux and localized boiling by sweeping the hottest part of the fluid in contact with the tube into the bulk flow. This study uses STAR-CCM+ 13.06.011-R8 computational fluid dynamics (CFD) simulations to examine the flow from twisted tape and how modifications to geometry, physics models, meshing models, and flow conditions affect the results. The simulations visualize radial and axial transport of the fluid and determine pressure drop due to the geometry, and will later be compared to positron emission particle tracking (PEPT) experiments.

Biography

Jack Fletcher is a freshman pursuing his degree in Nuclear Engineering. He is an active member in the Nuclear Science Design Team and the American Nuclear Society, through which he gained the opportunity to conduct research in the fields of heat transfer and fluid dynamics under the direction of Ph.D. candidates Mr. Ryan Steere and Ms. Monica Gehrig, respectively. Through both organizations he enjoys the ability to create strong connections in his degree field and make tangible contributions to the scientific community, even as a first-year student at the University. He plans to continue conducting, guiding, and teaming from research well into his graduate studies and professional career.

Research Category

Engineering

Presentation Type

Oral Presentation

Document Type

Presentation

Award

Engineering oral presentation, Second place

Location

Ozark Room

Presentation Date

16 Apr 2019, 1:00 pm - 1:30 pm

This document is currently not available here.

Share

COinS
 
Apr 16th, 1:00 PM Apr 16th, 1:30 PM

CFD Modeling of Flow through Twisted Tape

Ozark Room

Sustained nuclear fusion subjects components to extremely high heat fluxes. Heat transfer enhancement techniques are necessary to ensure the survival of these components in such conditions; one enhancement mechanism currently proposed for use in toroidal fusion devices such as Wendelstein 7-X (W7-X) is a twisted tape swirltube inserted in a monoblock. Swirl flow induced by the twisted tape is expected to increase the critical heat flux and localized boiling by sweeping the hottest part of the fluid in contact with the tube into the bulk flow. This study uses STAR-CCM+ 13.06.011-R8 computational fluid dynamics (CFD) simulations to examine the flow from twisted tape and how modifications to geometry, physics models, meshing models, and flow conditions affect the results. The simulations visualize radial and axial transport of the fluid and determine pressure drop due to the geometry, and will later be compared to positron emission particle tracking (PEPT) experiments.