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Anisotropic Compressive Pressure-Dependent Effective Thermal Conductivity Of Granular Beds, R. Daniel Garrett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In situ planetary effective thermal conductivity measurements are typically made using a long needle-like probe, which measures effective thermal conductivity in the probe's radial (horizontal) direction. The desired effective vertical thermal conductivity for heat flow calculations is assumed to be the same as the measured effective horizontal thermal conductivity. However, it is known that effective thermal conductivity increases with increasing compressive pressure on granular beds and horizontal stress in a granular bed under gravity is related to the vertical stress through Jaky's at-rest earth pressure coefficient. No research has been performed previously on determining the anisotropic effective thermal conductivity of …