Abstract
The numerical investigation of two main factors, velocity shear and wall proximity effect, which affects mean velocity measurement for low Reynolds number wall-bounded flow using Pitot tubes, was carried out. Their effects were separated through careful numerical simulation and cases were run for each of them respectively for error analysis. The simulation results show that: for velocity shear, the result of current work basically agrees with that of related literature, however, the non-dimensional streamline shift does not asymptotically approach to a constant value; noticeable wall vicinity effect can be found within 5 tube diameters to the wall, and errors are decreasing within 1 tube diameter to the wall. Comparisons were made among the numerical solutions in this work and the corrections being used in the literature, and the new corrections based on simulation results of current work were given in the end.
| Translated title of the contribution | Investigation of mean velocity measurement for low Reynolds number wall-bounded flow using Pitot tubes |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 37-41 |
| Number of pages | 5 |
| Journal | Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology |
| Volume | 40 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 28 2018 |
Bibliographical note
Publisher Copyright:© 2018, NUDT Press. All right reserved.
Keywords
- Computational fluid dynamics
- Low Reynolds number
- Pitot tube
- Wall-bounded flow
ASJC Scopus subject areas
- Modeling and Simulation
- General Materials Science
- Mechanical Engineering
- Electrical and Electronic Engineering