4th International Eurasian Conference on Science, Engineering and Technology, Ankara, Turkey, 14 - 16 December 2022, pp.118
The design of heat exchangers can change significantly with the use of additive manufacturing. Thanks to additive
manufacturing which is known as a three-dimensional (3D) printer, material bodies can be produced with a small volume,
light weight and reduced production costs and most importantly the lowest contact resistance. In this study, open cell porous
media with dimensions of 50 x 50 x 100 mm in gyroid shape was produced from polylactic acid (PLA) material by 3D printer.
The porosity was calculated as 67%. In the experiments with air flow, Reynolds numbers based on hydraulic diameter are
between 2882.9 and 28857.3, Reynolds numbers based on permeability are in the range from 9.62 to 96.32. Flow regime is
turbulence. The relation between pressure drop and velocity was obtained as a quadratic polynomial as expected. The
permeability and form drug coefficient of the gyroid-shaped porous media were calculated as 2.79x10-8 m2 and 0.06,
respectively. In addition, friction factor based on permeability is presented for the gyroid-shaped porous media. Thanks to
this study, information is given about the pressure drop of gyroid-shaped porous media.