TITLE:
Temperature Oscillations into a Couette-Poiseuille Flow
AUTHORS:
Shalom Sadik
KEYWORDS:
Temperature, Amplitude, Frequency, Dissipation Function, Thermal Diffusivity
JOURNAL NAME:
Energy and Power Engineering,
Vol.10 No.9,
September
29,
2018
ABSTRACT: Following previous work that discussed temperature fluctuations without flowing media a physical model of temperature oscillations into a Couette-Poiseuille flow was built. The temperature distribution into the flow was calculated according to oscillations constraints on the upper and lower plates, and heat dissipation due to shear stresses into the fluid. The physical model deals with different temperature amplitudes and different frequencies constraints on the upper and the lower plates. A physical superposition and complex numbers were used. It was shown that when the constraint frequency increases, its penetration capacity is reduced. Increasing gap width between plates leads to increased fluid temperature values due to enlarged fluid velocity. Increasing thermal diffusivity, increases constrains temperatures penetration intensity.