Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7054945 | International Journal of Heat and Mass Transfer | 2017 | 5 Pages |
Abstract
The comparative experiments on conduction/convection in a ferro-nanofluid (Prandtl number 700) and its organic base, transformer oil (Prandtl number 300), are performed in a spherical cavity heated from above/below. The experiments show that the conductivity of a ferro-nanofluid increases compared to that of its base. However convection and the associated heat transfer are suppressed in a ferro-nanofluid relative to those in transformer oil. The investigation also reveals the existence of a hysteresis and oscillatory flow regimes near the convection onset in ferro-nanofluids and commercial transformer oil that fundamentally differ their behaviour from that of ordinary monofluids.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Marina T. Krauzina, Alexandra A. Bozhko, Pavel V. Krauzin, Sergey A. Suslov,