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research-article

A Computational Fluid Dynamics based Sensitivity Analysis of the Chemical Vapor Analysis process to synthesize Carbon Nanotubes

[+] Author and Article Information
Carlos Teixeira

Departamento de Electronica Industrial Universidade do Minho, Campus de Azurém Guimaraes, Minho 4800-058 Portugal carlosjft.18@gmail.com

Alexandre Ferreira da Silva

Departamento de Electronica Industrial Universidade do Minho, Campus de Azurém Guimaraes, Minho 4800-058 Portugal asilva@dei.uminho.pt

Luis Rocha

Departamento de Electronica Industrial Universidade do Minho, Campus de Azurém Guimaraes, Minho 4800-058 Portugal lrocha@dei.uminho.pt

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Thermal Science and Engineering Applications. Manuscript received October 8, 2018; final manuscript received July 20, 2019; published online xx xx, xxxx. Assoc. Editor: Matthew R. Jones.

ASME doi:10.1115/1.4044424 History: Received October 08, 2018; Accepted July 21, 2019

Abstract

Over the last years, there has been a high interest in Carbon Nanotubes' (CNTs) applications due to their unique properties, mainly at mechanical and electrical levels. However, current synthesis processes, such as Chemical Vapor Deposition (CVD), are highly unpredictable and inconsistent, which leads to an exhaustive trial-and-error methodology when extrapolating results. A sensitivity analysis based in Computational Fluid Dynamics (CFD) is here performed to two distinct setups of the CVD process as a way to understand the synthesis process. Setups were computationally designed and simulated for various synthesis scenarios, where only the hydrocarbon flow and the process temperature were changed. Measuring synthesis conditions, such as concentrations and velocity, inside the tube furnace, for these scenarios allows the identification of which compound affects most each condition. Results showed that, when envisioning the process extrapolation, the synthesis conditions can be tuned via the accessed parameters.

Copyright © 2019 by ASME
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