Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Numerical Investigation of Thermofluid Flow in a Chemical Vapor Deposition Furnace Utilized to Manufacture Template-Synthesized Carbon Nanotubes J. Heat Transfer. 2016;138(10):102101-102101-12. doi:10.1115/1.4033643 Figure Legend: Schematic representations of the TB-CVD system. (a) Schematic depicting the physical TB-CVD system. Purge, carrier, and precursor gases are metered into a three-stage tube furnace consisting of temperature-controlled heaters. Carbon is deposited on the templates, which are positioned in the center of the heated region. (b) Schematic depicting the geometric features and segments of the tube furnace and placement of the boat and templates. Segments B–D represent the heated region of the tube furnace.

Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Numerical Investigation of Thermofluid Flow in a Chemical Vapor Deposition Furnace Utilized to Manufacture Template-Synthesized Carbon Nanotubes J. Heat Transfer. 2016;138(10):102101-102101-12. doi:10.1115/1.4033643 Figure Legend: Schematic representation of the boundary conditions for the TB-CVD tube furnace. Boundary conditions only pertaining to model M-4 are indicated with single asterisks (*). Boundary conditions pertaining to the species concentration are indicated with double asterisks (**).

Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Numerical Investigation of Thermofluid Flow in a Chemical Vapor Deposition Furnace Utilized to Manufacture Template-Synthesized Carbon Nanotubes J. Heat Transfer. 2016;138(10):102101-102101-12. doi:10.1115/1.4033643 Figure Legend: Model mesh structure of the TB-CVD tube furnace. Reference point of coordinate system is located at the center of the tube wall above the inlet, where the x-axis coincides with the tube centerline. (a) Perspective view of the model mesh structure near the boat and templates inside the tube furnace. (b) Two-dimensional projected view of the 3D mesh near the inlet, showing boundary layer meshing near the walls.

Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Numerical Investigation of Thermofluid Flow in a Chemical Vapor Deposition Furnace Utilized to Manufacture Template-Synthesized Carbon Nanotubes J. Heat Transfer. 2016;138(10):102101-102101-12. doi:10.1115/1.4033643 Figure Legend: Contours of axial, transverse, and vertical velocity components in the middle cross section of the tube furnace. Contours for all four models are presented as a function of flow rate.

Date of download: 1/3/2018 Copyright © ASME. All rights reserved. From: Numerical Investigation of Thermofluid Flow in a Chemical Vapor Deposition Furnace Utilized to Manufacture Template-Synthesized Carbon Nanotubes J. Heat Transfer. 2016;138(10):102101-102101-12. doi:10.1115/1.4033643 Figure Legend: Velocity vector plots in the axial cross section of the tube furnace for model M-4. Plots show the magnitude, direction, and evolution of the longitudinal vortices as a function of flow rate.