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| Titel: |
The Effect of Premixed Combustion on the Recirculation Zone of Circular Cylinders |
| Auteur: |
Bill, R. G. Jr. Tarabanis, K. |
| Verschenen in: |
Combustion science and technology |
| Paginering: | Jaargang 47 (1986) nr. 1-2 pagina's 39-53 |
| Jaar: |
1986-06-01 |
| Inhoud: |
— Axial velocities in the recirculation zone of circular cylinders were measured using laser velocimetry in cold flows and flows with premixed combustion. Free stream turbulence with an intensity of 4 percent was introduced by an upstream grid. The mean free stream velocity and the equivalence ratio were fixed at values of 2.6 m/s and 0.65, respectively. The flow over a circular cylinder was studied at Reynolds numbers of 1000 and 2000. Profiles of mean velocity and turbulence intensity were determined from the data. The results indicate that the effect of combustion for the conditions of the study is to increase the length of recirculation zones, to dampen velocity fluctuations and to increase the magnitude of recirculating velocities. Comparison with reported data for similar cold flows suggests that the increase in length of the recirculation zone and the decrease in velocity fluctuations is in part due to a delay in transition in the wake of the cylinder and the suppression of vortex shedding. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 7 gevonden artikelen
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