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- W2110871893 abstract "Fluids with higher thermal conductivities are sought for fluidic cooling systems in applications including microprocessors and high-power lasers. By adding high thermal conductivity nanoscale metal and metal oxide particles to a fluid the thermal conductivity of the fluid is enhanced. While particle aggregates play a central role in recent models for the thermal conductivity of nanofluids, the effect of particle diffusion in a temperature field on the aggregation and transport has yet to be studied in depth. The present work separates the effects of particle aggregation and diffusion using parallel plate experiments, infrared microscopy, light scattering, Monte Carlo simulations, and rate equations for particle and heat transport in a well dispersed nanofluid. Experimental data show non-uniform temporal increases in thermal conductivity above effective medium theory and can be well described through simulation of the combination of particle aggregation and diffusion. The simulation shows large concentration distributions due to thermal diffusion causing variations in aggregation, thermal conductivity and viscosity. Static light scattering shows aggregates form more quickly at higher concentrations and temperatures, which explains the increased enhancement with temperature reported by other research groups. The permanent aggregates in the nanofluid are found to have a fractal dimension of 2.4 and the more » aggregate formations that grow over time are found to have a fractal dimension of 1.8, which is consistent with diffusion limited aggregation. Calculations show as aggregates grow the viscosity increases at a faster rate than thermal conductivity making the highly aggregated nanofluids unfavorable, especially at the low fractal dimension of 1.8. An optimum nanoparticle diameter for these particular fluid properties is calculated to be 130 nm to optimize the fluid stability by reducing settling, thermal diffusion and aggregation. « less" @default.
- W2110871893 created "2016-06-24" @default.
- W2110871893 creator A5005859978 @default.
- W2110871893 creator A5014762439 @default.
- W2110871893 date "2010-05-01" @default.
- W2110871893 modified "2023-09-27" @default.
- W2110871893 title "Characterization and modeling of thermal diffusion and aggregation in nanofluids." @default.
- W2110871893 cites W120059278 @default.
- W2110871893 cites W1603751942 @default.
- W2110871893 cites W1963495194 @default.
- W2110871893 cites W1965500360 @default.
- W2110871893 cites W1967288826 @default.
- W2110871893 cites W1971133785 @default.
- W2110871893 cites W1971656919 @default.
- W2110871893 cites W1971721952 @default.
- W2110871893 cites W1974014039 @default.
- W2110871893 cites W1974223293 @default.
- W2110871893 cites W1974362938 @default.
- W2110871893 cites W1978211929 @default.
- W2110871893 cites W1983678528 @default.
- W2110871893 cites W1985997303 @default.
- W2110871893 cites W1986027031 @default.
- W2110871893 cites W1987092137 @default.
- W2110871893 cites W1988521770 @default.
- W2110871893 cites W1992643283 @default.
- W2110871893 cites W1993640088 @default.
- W2110871893 cites W1994624794 @default.
- W2110871893 cites W1997014239 @default.
- W2110871893 cites W2001672996 @default.
- W2110871893 cites W2001962804 @default.
- W2110871893 cites W2002116790 @default.
- W2110871893 cites W2008418804 @default.
- W2110871893 cites W2012286947 @default.
- W2110871893 cites W2013148554 @default.
- W2110871893 cites W2016148754 @default.
- W2110871893 cites W2016213857 @default.
- W2110871893 cites W2018528894 @default.
- W2110871893 cites W2022157976 @default.
- W2110871893 cites W2023498927 @default.
- W2110871893 cites W2024541781 @default.
- W2110871893 cites W2026267456 @default.
- W2110871893 cites W2031095298 @default.
- W2110871893 cites W2032811533 @default.
- W2110871893 cites W2035685097 @default.
- W2110871893 cites W2037744203 @default.
- W2110871893 cites W2040526710 @default.
- W2110871893 cites W2041532378 @default.
- W2110871893 cites W2044281222 @default.
- W2110871893 cites W2044554025 @default.
- W2110871893 cites W2046264851 @default.
- W2110871893 cites W2047620771 @default.
- W2110871893 cites W2047718404 @default.
- W2110871893 cites W2048615956 @default.
- W2110871893 cites W2049638322 @default.
- W2110871893 cites W2051203581 @default.
- W2110871893 cites W2051890509 @default.
- W2110871893 cites W2059289137 @default.
- W2110871893 cites W2059885538 @default.
- W2110871893 cites W2059959925 @default.
- W2110871893 cites W2062148929 @default.
- W2110871893 cites W2062878779 @default.
- W2110871893 cites W2063184809 @default.
- W2110871893 cites W2065318865 @default.
- W2110871893 cites W2072526128 @default.
- W2110871893 cites W2072714145 @default.
- W2110871893 cites W2072968302 @default.
- W2110871893 cites W2074370912 @default.
- W2110871893 cites W2074850015 @default.
- W2110871893 cites W2076978869 @default.
- W2110871893 cites W2077228161 @default.
- W2110871893 cites W2081977361 @default.
- W2110871893 cites W2083002205 @default.
- W2110871893 cites W2085153484 @default.
- W2110871893 cites W2085734138 @default.
- W2110871893 cites W2086680940 @default.
- W2110871893 cites W2086696748 @default.
- W2110871893 cites W2087182768 @default.
- W2110871893 cites W2090041273 @default.
- W2110871893 cites W2093603205 @default.
- W2110871893 cites W2094333945 @default.
- W2110871893 cites W2097362469 @default.
- W2110871893 cites W2098215695 @default.
- W2110871893 cites W2104187070 @default.
- W2110871893 cites W2105674459 @default.
- W2110871893 cites W2107522232 @default.
- W2110871893 cites W2109514885 @default.
- W2110871893 cites W2120936131 @default.
- W2110871893 cites W2120966911 @default.
- W2110871893 cites W2122795128 @default.
- W2110871893 cites W2125156210 @default.
- W2110871893 cites W2134499051 @default.
- W2110871893 cites W2134616821 @default.
- W2110871893 cites W2142256860 @default.
- W2110871893 cites W2146223377 @default.
- W2110871893 cites W2153028941 @default.
- W2110871893 cites W215475747 @default.
- W2110871893 cites W2156259175 @default.
- W2110871893 cites W2158329192 @default.
- W2110871893 cites W2160404459 @default.
- W2110871893 cites W2164677588 @default.