Numerical tests of metrological conditioning of modified monotonic heating methodology for thermal diffusivity evaluation

Abstract

[b]Abstract[/b]. Problem of a heat transfer from a certain solid object under forced convection of thermostatic fluid has been discussed. The analysed objects were a cylinder and a cuboid. They were studied while subjected to a stationary fluid flow at different angles of attack. Several values of the inflow velocity ranging from 0.01 m.s–1 to 1 m.s–1 have been taken into consideration. The analysed fluids were of the water and the ethanol properties, respectively. The analysis has been performed applying the CFD (Computer Fluid Dynamics) ANSYS code. The obtained results complement results of previous analytical studies that had created of a theoretical background for the modified step heating i.e. regular heating regime. In addition, they confirmed a good metrological condition of the developed procedure.[b]Keywords[/b]: thermal diffusivity (TD), temperature equilibration constant, forced convection heat transfer, modified step heating procedure of TD determination, computer fluid dynamics

Keywords

• thermal diffusivity (TD)
• temperature equilibration constant
• forced convection heat transfer
• modified step heating procedure of TD determination
• computer fluid dynamics