Details
| Original language | English |
|---|---|
| Pages (from-to) | 137-144 |
| Number of pages | 8 |
| Journal | International Journal of Heat and Technology |
| Volume | 40 |
| Issue number | 1 |
| Publication status | Published - 28 Feb 2022 |
Abstract
The effect of jet arrangement, jet Re number, jet exit angle (θ), the nozzle-to-surface distance (H/d), jet-to-jet spacing (S/d) on the heat transfer, and pressure force performance from multiple impinging round jets on a moving flat surface have been numerically evaluated. There is a minor difference between in-line and staggered arrangements on a moving flat surface. The averaged Nusselt number on a moving flat surface reduces with an increase in the relative velocity (VR). The surface motion effects become more pronounced on the local Nu distribution at low Re, small S/d, large H/d, and angled jets for a moving flat surface. The pressure force coefficient on a moving flat surface is highly dependent on the H/d and θ but relatively insensitive to the VR, Re, and S/d within the range examined. Two correlations are developed and validated for the average Nu and force coefficient and the agreement between the CFD and correlation is found to be reasonable.
Keywords
- angled jet, heat transfer, jet arrangement, multiple jet, pressure force, surface motion
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanical Engineering
- Chemical Engineering(all)
- Fluid Flow and Transfer Processes
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In: International Journal of Heat and Technology, Vol. 40, No. 1, 28.02.2022, p. 137-144.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Effect of Surface Motion on Heat Transfer and Pressure Force from Multiple Impinging Jets
T2 - A Numerical Study
AU - Chitsazan, Ali
AU - Klepp, Georg
AU - Glasmacher, Birgit
PY - 2022/2/28
Y1 - 2022/2/28
N2 - The effect of jet arrangement, jet Re number, jet exit angle (θ), the nozzle-to-surface distance (H/d), jet-to-jet spacing (S/d) on the heat transfer, and pressure force performance from multiple impinging round jets on a moving flat surface have been numerically evaluated. There is a minor difference between in-line and staggered arrangements on a moving flat surface. The averaged Nusselt number on a moving flat surface reduces with an increase in the relative velocity (VR). The surface motion effects become more pronounced on the local Nu distribution at low Re, small S/d, large H/d, and angled jets for a moving flat surface. The pressure force coefficient on a moving flat surface is highly dependent on the H/d and θ but relatively insensitive to the VR, Re, and S/d within the range examined. Two correlations are developed and validated for the average Nu and force coefficient and the agreement between the CFD and correlation is found to be reasonable.
AB - The effect of jet arrangement, jet Re number, jet exit angle (θ), the nozzle-to-surface distance (H/d), jet-to-jet spacing (S/d) on the heat transfer, and pressure force performance from multiple impinging round jets on a moving flat surface have been numerically evaluated. There is a minor difference between in-line and staggered arrangements on a moving flat surface. The averaged Nusselt number on a moving flat surface reduces with an increase in the relative velocity (VR). The surface motion effects become more pronounced on the local Nu distribution at low Re, small S/d, large H/d, and angled jets for a moving flat surface. The pressure force coefficient on a moving flat surface is highly dependent on the H/d and θ but relatively insensitive to the VR, Re, and S/d within the range examined. Two correlations are developed and validated for the average Nu and force coefficient and the agreement between the CFD and correlation is found to be reasonable.
KW - angled jet
KW - heat transfer
KW - jet arrangement
KW - multiple jet
KW - pressure force
KW - surface motion
UR - http://www.scopus.com/inward/record.url?scp=85128265204&partnerID=8YFLogxK
U2 - 10.18280/ijht.400116
DO - 10.18280/ijht.400116
M3 - Article
AN - SCOPUS:85128265204
VL - 40
SP - 137
EP - 144
JO - International Journal of Heat and Technology
JF - International Journal of Heat and Technology
SN - 0392-8764
IS - 1
ER -