Figure 2
From: High-speed roll-to-roll manufacturing of graphene using a concentric tube CVD reactor
Computational fluid dynamics (CFD) model of gas flow within the CTCVD reactor. a) Cross-section diagram of the flow paths within the concentric tube arrangement and colormap of C2H4 mass fraction during steady operation. b) Profiles of average gas velocity in the gap between the tubes and average temperature versus position along the flow direction. c) Mass fraction of He, H2 and C2H4 along the flow direction, showing the abrupt change upon injection of C2H4 through the inner tube and the rapid stabilization <1 cm downstream of this point (x = 0.38 m). Data is from CFD simulations run at a system pressure of 760 torr.
