Numerical Simulation of Temperature and Velocity Proﬁles in a Horizontal CVD-reactor
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Silicon Carbide (SiC) has the potential to signiﬁcantly improve electronics. As a material, it can conduct heat better, carry larger currents and can give faster responses compared to today’s technologies. One way to produce SiC for use in electronics is by growing a thin layer in a CVD-reactor (chemical vapour deposition). A CVD-reactor leads a carrier gas with small parts of active gas into a heated chamber (susceptor). The gas is then rapidly heated to high temperatures and chemical reactions occur. These new chemical substances can then deposit on the substrate surface and grow a SiC layer. This thesis investigates the eﬀect of diﬀerent opening angles on a susceptor inlet in a SiC horizontal hot-walled CVD-reactor at Linköping University. The susceptor inlet aﬀects both the ﬂow and heat transfer and therefore has an impact on the conditions over the substrate. A fast temperature rise in the gas as close to the substrate as possible is desired. Even temperaturegradients vertically over the substrate and laminar ﬂow is desired. The CVD-reactor is modeled with conjugate heat transfer using CFD simulations for three diﬀerent angles of the inlet. The results show that the opening angle mainly aﬀects the temperature gradient over the substrate and that a wider opening angle will cause a greater gradient. The opening angle will have little eﬀect on the temperature of the satellite and substrate.
Place, publisher, year, edition, pages
2014. , 78 p.
horizontal hot-walled CVD-reactor CVD reactor Silicon Carbide SiC numerical simulation CFD conjugate heat transfer temperature velocity induction
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:liu:diva-117942ISRN: LIU-IEI-TEK-A–14/02104—SEOAI: oai:DiVA.org:liu-117942DiVA: diva2:812351
Subject / course
Applied Thermodynamics and Fluid Mechanics
Danielsson, Örjan, PhDRenner, Johan, PhD
Karlsson, Matts, Professor