The topologies of 3D lattice structures were reviewed and their overall heat transfer and heat dissipa-tion performances compared,under the fixed mass flow rate,pressure drop and pumping power conditions,re-spectively.In total 12 lattice structures,with 6 different materials and in 2 orientations,were compared.The conjugate heat transfer in the lattice structures was solved with validated numerical models.Numerical results indicate that,the lattice topology,the lattice material and the operating conditions significantly affect the heat transfer and cooling performances.The optimal lattice differs under different comparison conditions.Under the fixed mass flow rate condition,the shifted X-lattice in orientation Aand the octet lattice in orientation Aexhibit the best heat transfer performance;the shifted X-lattice in orientation A also has the best cooling performance.Under the fixed pressure drop condition,the shifted X-lattices in both orientations Aand Bexhibit the best heat transfer performance;while the cubic lattice in orientation B and the shifted X-lattice in orientation B show the best cooling performance.Under the fixed pumping power condition,the shifted X-lattice in orientation A and the rectangular pyramid lattice in orientation B exhibit the best heat transfer performance;the shifted X-lattice in orientation Band the rectangular pyramid lattice in orientation Bshow the best cooling performance.The heat transfer and cooling performance database under a given lattice porosity and Acharacteristic length was presen-ted as the benchmark for performance comparison of newly developed lattice structures.In addition,the data-base can benefit various engineering designs in selecting the appropriate lattice structures.
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