Kagawa, Measurement and Correlation of Pressure Drop Characteristics for Air Flow Through Sintered Metal Porous Media, Transp. Brailovski, Design, Manufacture and Testing of Porous Materials with Ordered and Random Porosity: Application to Porous Medium Burners, Appl. Ding, Effect of Porosity on Heat Transfer and Pressure Drop Characteristics of Wet Air in Hydrophobic Metal Foam Under Dehumidifying Conditions, Exp. Our paper will discuss the results of these experiments and their implications. Flow tests were performed with water and nitrogen to characterize the pressure drop across these samples as a function of printing laser energy density and lattice topology. Compression tests were performed to determine the effect of laser energy density on lattice strength. Due to the small unit cell and strut size of these lattices, the print parameters directly impact the lattice feature resolution, which were characterized using scanning electron microscopy. This work investigates the effects of lattice topology and print parameters on the mechanical and fluid flow properties of these lattices. The use of AM allows these lattices to be integrated into other structures, with the capability of tuning properties such as mechanical properties, pressure drop, and surface area. Applications for these lattice structures include catalysts for monopropellant and green propulsion, wicking materials in heat pipes, and high thermal load structures. In this study, tungsten lattices of approximately 5 × 5 × 5 mm were additively manufactured using various laser energy densities and lattice topologies. Additive manufacturing (AM) offers unique advantages for manufacturing complex geometries from refractory metals, which are difficult to form using traditional processes.
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