Clean Manuscript ATE-D-22-00115R1.pdf (1.3 MB)
The effect of key parameter changes on the critical heat flux of spray evaporatively-cooled vibrating surfaces using a single misting nozzle
journal contribution
posted on 2023-06-10, 03:58 authored by Alireza Sarmadian, Jisjoe Thalackottore Jose, Julian DunneJulian Dunne, Christopher Long, Jean-Pierre Pirault, C RouaudA new correlation model is examined for capturing the combined influences of surface-to-nozzle distance and coolant flow rate on critical heat flux associated with spray evaporative cooling of vibrating surfaces. The correlation model is constructed using dimensional analysis by applying the Generalized Buckingham ?-Theorem. The model is calibrated using experimentally-measured spray evaporative cooling data, taken from an electrically-heated horizontal flat circular test-piece excited by a shaker through a range of low and high frequencies of vibration, from small to large amplitude. To understand the combined effect of frequency, amplitude, and surface-to-nozzle distance, at critical heat flux, Vibrational Reynolds Number, Acceleration Number, and Dimensionless Surface-to-Nozzle Distance are used. The results show that surface-to-nozzle distance, in the presence of dynamic effects, significantly influences the critical heat flux, whereas vibration amplitudes and frequencies have differing effects in response to variations in both surface-to-nozzle distance and flow rate. Surface-to-nozzle distance can either increase or decrease the heat transfer, depending on the vibration range. The calibrated correlation model is capable of predicting the effect of surface-to-nozzle distance on the critical heat flux with errors in the range -4.8% and + 10.5%.
History
Publication status
- Published
File Version
- Accepted version
Journal
Applied Thermal EngineeringISSN
1359-4311Publisher
Elsevier BVVolume
213Page range
118815-118815Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2022-06-19First Compliant Deposit (FCD) Date
2022-06-16Usage metrics
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