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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Li, Ping Chen, Jianhui Qu, Huancheng Xie, Yonghui Zhang, Di |
| Copyright Year | 2013 |
| Abstract | A code based on the lattice-Boltzmann method was programmed. At various Reynolds numbers, simulations of the Cu/water nanofluid flow structure and heat transfer performance in a two dimensional microchannel with blocks (Re = 10–100) and grooves (Re = 50–200) were conducted, and the factors affecting the flow and heat transfer were explored. The flow and heat transfer of nanofluids with nanoparticle volume concentration of 0.5%, 1.0%, 1.5% and 2.0% were simulated, obtaining the velocity and temperature distributions to compare with the results of base fluid. Flow analysis showed that recirculation zones formed behind the blocks and in the grooves when nanofluids flowed in the microchannel, and the size of recirculation zone increased with the increase of Reynolds number and nanoparticle volume concentration. The core of the recirculation zone in the groove gradually moved to the right wall as Reynolds number increased at the same nanoparticle volume concentration, and the direction of the main flow was getting horizontal. Heat transfer results indicated that the addition of nanoparticles could promote fluid flow and energy transport, so that the thermal boundary layer thickness decreased and the heat transfer was enhanced. The heat transfer enhancement increased with the increase of Reynolds number and nanoparticle volume concentration. It was also shown that the heat transfer enhancement by increasing the Reynolds number was limited. The results could give a fundamental understanding for designing highly efficient heat exchangers. |
| Sponsorship | Fluids Engineering Division |
| File Format | |
| ISBN | 9780791855553 |
| DOI | 10.1115/FEDSM2013-16535 |
| Volume Number | Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics |
| Conference Proceedings | ASME 2013 Fluids Engineering Division Summer Meeting |
| Language | English |
| Publisher Date | 2013-07-07 |
| Publisher Place | Incline Village, Nevada, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Heat transfer enhancement Lattice-boltzmann method (lbm) Grooves Blocks Microchannel Nanofluids Lattice boltzmann methods Flow (dynamics) Heat transfer Microchannels |
| Content Type | Text |
| Resource Type | Article |
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