Numerical Simulation of Natural Convection in a Transient Short-Hot-Wire Thermal Conductivity Cell
Author(s)
L. Woodfield, Peter
Fukai, Jun
Fujii, Motoo
Takata, Yasuyuki
Shinzato, Kanei
Griffith University Author(s)
Year published
2008
Metadata
Show full item recordAbstract
Numerical simulations are performed for thermal and flow fields in a transient hot-wire thermal conductivity cell designed for the study of hydrogen gas at pressures up to 100 MPa. Two-dimensional unsteady incompressible Navier-Stokes equations are solved simultaneously with the continuity and energy equations. For hydrogen at atmospheric pressure, natural convection is found to have an almost negligible effect on the predicted wire temperature. At high pressures the onset of natural convection effects is predicted to occur in less than one second in agreement with an existing empirical correlation for the critical ...
View more >Numerical simulations are performed for thermal and flow fields in a transient hot-wire thermal conductivity cell designed for the study of hydrogen gas at pressures up to 100 MPa. Two-dimensional unsteady incompressible Navier-Stokes equations are solved simultaneously with the continuity and energy equations. For hydrogen at atmospheric pressure, natural convection is found to have an almost negligible effect on the predicted wire temperature. At high pressures the onset of natural convection effects is predicted to occur in less than one second in agreement with an existing empirical correlation for the critical time for natural convection in a transient hot-wire cell.
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View more >Numerical simulations are performed for thermal and flow fields in a transient hot-wire thermal conductivity cell designed for the study of hydrogen gas at pressures up to 100 MPa. Two-dimensional unsteady incompressible Navier-Stokes equations are solved simultaneously with the continuity and energy equations. For hydrogen at atmospheric pressure, natural convection is found to have an almost negligible effect on the predicted wire temperature. At high pressures the onset of natural convection effects is predicted to occur in less than one second in agreement with an existing empirical correlation for the critical time for natural convection in a transient hot-wire cell.
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Journal Title
Netsu Bussei
Volume
22
Issue
4
Publisher URI
Subject
Mechanical Engineering not elsewhere classified