Model description
The cross-sectional view of the computational domain is shown in Fig. 1, which is formed by the region limited
by quartz glass, the inlet region, ceramic cylinder surrounded by the cavity and the reactor exit. Concentrated
radiation enters into the cavity receiver through transparent quartz glass window and aperture, and impinges over the
front surface of sample, which is mounted on a rod type sample holder and placed inside the cavity receiver as
shown in fig. 1. To reduce the conduction heat losses, the cavity receiver is protected by well insulating layer.
Carrier gas is injected radially through four inlet ports close to the quartz window. A 7-kWe solar simulator is used
as radiation source. The complete description of this reactor can be found in [8, 9, 10]. To predict the instantaneous
temperature distribution and fluid flow inside the reactor, a numerical model is developed by assuming the flow is
laminar and the reactor cavity walls are opaque and lambertian reflectance. So, the governing equations to simulate
the thermo-fluid flow inside the reactor are given by
Model description
The cross-sectional view of the computational domain is shown in Fig. 1, which is formed by the region limited
by quartz glass, the inlet region, ceramic cylinder surrounded by the cavity and the reactor exit. Concentrated
radiation enters into the cavity receiver through transparent quartz glass window and aperture, and impinges over the
front surface of sample, which is mounted on a rod type sample holder and placed inside the cavity receiver as
shown in fig. 1. To reduce the conduction heat losses, the cavity receiver is protected by well insulating layer.
Carrier gas is injected radially through four inlet ports close to the quartz window. A 7-kWe solar simulator is used
as radiation source. The complete description of this reactor can be found in [8, 9, 10]. To predict the instantaneous
temperature distribution and fluid flow inside the reactor, a numerical model is developed by assuming the flow is
laminar and the reactor cavity walls are opaque and lambertian reflectance. So, the governing equations to simulate
the thermo-fluid flow inside the reactor are given by
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