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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF HEAT AND MASS TRANSFER PROPERTIES OF OPEN-CELL CERAMIC FOAMS

Get access (open in a dialog) DOI: 10.1615/IHTC16.pma.024163
pages 8203-8208

要約

Ceramic foams are key material for applications such as catalysis, combustion support, particle filter, and heat exchanger. The knowledge of their transport properties appears thus crucial. We present herein experimental and numerical investigations of permeability, Forchheimer coefficient, thermal conductivity and convection coefficient of 10 pore per inch open-cell alumina foam. Numerical approach uses direct pore level simulation of heat and flow within a 3D representative volume obtained from X-Ray tomographic imaging. Experimentally, convection coefficient is determined from the analysis of the transient temperature of hot air flowing through the foam sample. Thermal conductivity is determined from a steady-state hot plane method. Permeability and Forchheimer coefficient are retrieved from the pressure drop curves versus Reynolds number. We show that numerical and experimental predictions of transport properties are well consistent with literature. However, significant deviation exists between experimental and numerical results of thermal conductivity and convection coefficient due to uncertainty on solid thermal conductivity set as input of simulation and the difference of heat transfer models used to obtain the convection coefficient, respectively.