Thermal conductivity of nanoscale colloidal solutions (nanofluids) |
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Authors: | Prasher Ravi Bhattacharya Prajesh Phelan Patrick E |
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Institution: | Intel Corporation, CH5-157, 5000 W. Chandler Boulevard, Chandler, Arizona 85226-3699, USA. |
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Abstract: | Researchers have been perplexed for the past five years with the unusually high thermal conductivity (k) of nanoparticle-laden colloidal solutions (nanofluids). Although various mechanisms and models have been proposed in the literature to explain the high k of these nanofluids, no concrete conclusions have been reached. Through an order-of-magnitude analysis of various possible mechanisms, we show that convection caused by the Brownian movement of these nanoparticles is primarily responsible for the enhancement in k of these colloidal nanofluids. |
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