图书馆订购 Guest

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

TRANSIENT ANALYSIS OF COUPLED HEAT TRANSFER INSIDE CYLINDRICAL FOAM POROUS BLOCK WITH SUPERSONIC FLOW AROUND

Get access (open in a dialog) DOI: 10.1615/IHTC16.cov.022512
pages 3471-3486

摘要

The transient developing flow field and coupled heat transfer characteristic inside frontal cylindrical foam porous block attached to cylinder body with supersonic flow around is investigated numerically. The foam porous region is considered as a homogeneous continuum media with appropriate experimental data or correlations describing its pressure drop, volumetric heat transfer and radiative thermal properties. The temperature field within porous region is solved by employing local thermal non-equilibrium model. To account for thermal radiation contribution of solid struts under severe aero-heating conditions, Monte Carlo method is adopted to solve radiative transfer equation inside porous region. Transient data of pressure and temperature fields are obtained to illustrate the development of frontal flow field. The thermal response and radiation effect within foam porous is analyzed. Moreover, the effect of different parameters on the thermal response of solid struts are discussed, such as length and drag coefficient of foam porous. The results indicate that the flow field inside foam porous develops to steady state quickly while the thermal evolution is much slower due to the thermal response hysteresis of solid struts. Correspondingly, the effect of radiation of solid struts on inner surface increases initially and decreases afterwards when the steady state is approaching. The influence of length of foam porous on the temporal temperature differential between air flow and solid struts is small whereas the variation of inertial coefficient has considerable effect on temporal temperature differential.