An easy-to-use representation of vapor chambers is developed in terms of effective anisotropic properties. This approach enables accurate simulation of the vapor chamber represented as a solid conduction block by assigning appropriate values to its effective density, specific heat, in-plane thermal conductivity, and through-plane thermal conductance. These effective properties are formulated such that the vapor chamber operation in terms of steady-state and transient thermal responses matches a full, physical simulation of phase change and energy transport in the vapor core; they are intrinsic properties that can be applied independently of the boundary conditions and heat input.


Anisotropic, heat pipe, thermal conductivity, transient, vapor chamber.

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K. Baraya, J.A. Weibel, and S. V. Garimella, “Effective Anisotropic Properties-Based Representation of Vapor Chambers,” IEEE Transactions on Components, Packaging and Manufacturing Technology, Vol. 11, pp. 51-56, 2021.