Abstract
A new style asymmetrical outward convex corrugated tube(ACT) was studied with numerical simulation based on the three-dimensional Reynolds stress transport(RST) model. The ACT is compared with the traditional symmetrical corrugated tube(SCT) to investigate their difference in flow and heat transfer characteristics. The calculation results from existing direct numerical simulation(DNS) are compared to those from RST model under the same condition to check the reliability of RST model for the corrugation tube. The calculation results for velocity and pressure coefficient at different profiles from RST and DNS are in good agreement. The fluid flow and heat transfer mechanism are investigated in the outward convex corrugated tube. Compared to SCT, ACT presents up to 32.3% higher overall heat transfer.
| Original language | English |
|---|---|
| Pages (from-to) | 1916-1924 |
| Number of pages | 9 |
| Journal | Huagong Xuebao/CIESC Journal |
| Volume | 64 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2013 |
| Externally published | Yes |
Keywords
- Asymmetrical outward convex corrugated tube
- Direct numerical simulation
- Heat transfer enhancement
- Overall heat transfer performance
- Reynolds stress transport model
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