Experimental results for oscillatory water flow in 10-ppi metal foam at low-frequencies

7th European Thermal-Sciences Conference

Baci, O.^1 ; Arbak, A.^2 ; De Paepe, M.^1 ; Dukhan, N.^3

Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Gent

9000, Belgium^1

Makina Fakültesi, Istanbul Technical University, Gümüsuyu, Istanbul

34437, Turkey^2

Department of Mechanical Engineering, University of Detroit Mercy, Detroit

MI

48334, United States^3

关键词: Forchheimer;    Friction factors;    Open-cell metal foams;    Oscillating heat transfer;    Pores per inches;    Pressure loss;    Steady state;    Steady-state flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032040/pdf
DOI  :  10.1088/1742-6596/745/3/032040

来源: IOP

【 摘 要 】

This experimental study presents results and interpretation of oscillatory water flow in open-cell metal foam. The tested foam had 10 pores per inch and a porosity of 88%. At relatively low frequencies, three flow displacements were employed in the experiment. The influence of frequency and displacement on pressure loss and friction factor is discussed. A correlation of friction factor as a function of the kinetic Reynolds number was determined. Porous media parameters, permeability and drag coefficient, were also found for the same foam via steady-state flow experiments in the Darcy and Forchheimer regimes. The friction factor of oscillating flow was found to be higher than that of steady state. The findings of this study are considered important for oscillating heat transfer in metal foam.