Influence of wall temperature distribution on discharge coefficient of sonic nozzle |
|---|
| Peijuan Cao, Yuhan Xiang, Chunhui Li, Han Zhang |
- Abstract:
- To investigate the influence of complex body temperature distribution, especially the temperature drop near the throat on the discharge coefficient Cd of sonic nozzles, an adiabatic sonic nozzle with the throat of 2 mm and temperature acquisition systems including insulation sleeve with 15 mm Polytetrafluoroethylene (PTFE) and 5mm pearl cotton, multichannel data collector, three T type thermocouples, were established. Moreover, this system can be directly installed on the 100 L pVTt facility with or without insulation sleeve at National Institute of Metrology of China (NIM), to obtain these characteristics of body temperature distribution near the throat and Cd for sonic nozzle. Then, the influence of temperature distribution at throat on the Cd was qualitatively analyzed.
- Keywords:
- Sonic nozzles; Thermal effects; Temperature distribution; Thermocouple
- Download:
- IMEKO-TC9-2019-095.pdf
- DOI:
- 10.21014/tc9-2022.095
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2022
- Title:
19th International Flow Measurement Conference 2022
- Place:
- Chongqing, CHINA
- Time:
- 01 November 2022 - 04 November 2022