Characterization of Different Actuator Designs for the Control of the Precessing Vortex Core in a Swirl-Stabilized Combustor
Characterization of Different Actuator Designs for the Control of the Precessing Vortex Core in a Swirl-Stabilized Combustor
复制标题
旋流稳定燃烧器中进动涡核控制的不同执行器设计的表征
DOI:
10.1115/1.4038039
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发表时间:
2018
影响因子:
1.5
通讯作者:
Oberleithner
中科院分区:
文献类型:
--
作者:
Lückoff;Sieber;Paschereit;Oberleithner
The precessing vortex core (PVC) represents a helical-shaped coherent flow structure typically occurring in both reacting and nonreacting swirling flows. Until now, the fundamental impact of the PVC on flame dynamics, thermoacoustic instabilities, and pollutant emissions is still unclear. In order to identify and investigate these mechanisms, the PVC needs to be controlled effectively with a feedback control system. A previous study successfully applied feedback control in a generic swirling jet setup. The next step is to transfer this approach into a swirl-stabilized combustor, which poses big challenges on the actuator and sensor design and placement. In this paper, different actuator designs are investigated with the goal of controlling the PVC dynamics. The actuation strategy aims to force the flow near the origin of the instability—the so-called wavemaker. To monitor the PVC dynamics, arrays of pressure sensors are flush-mounted at the combustor inlet and the combustion chamber walls. The best sensor placement is evaluated with respect to the prediction of the PVC dynamics. Particle image velocimetry (PIV) is used to evaluate the passive impact of the actuator shape on the mean flow field. The performance of each actuator design is evaluated from lock-in experiments showing excellent control authority for two out of seven actuators. All measurements are conducted at isothermal conditions in a prototype of a swirl-stabilized combustor.
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DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
M. Sieber;C. Paschereit;K. Oberleithner
通讯作者:
K. Oberleithner
影响因子:
1.9
作者:
S. Terhaar;T. Reichel;C. Schrödinger;Lothar Rukes;C. Paschereit;K. Oberleithner
通讯作者:
S. Terhaar;T. Reichel;C. Schrödinger;Lothar Rukes;C. Paschereit;K. Oberleithner
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Phoebe Kuhn;J. Moeck;C. Paschereit;K. Oberleithner
通讯作者:
K. Oberleithner
影响因子:
3.7
作者:
U. Qadri;Dhiren Mistry;M. Juniper
通讯作者:
M. Juniper
DOI:
10.1115/1.4028392
发表时间:
2015-04-01
影响因子:
1.5
作者:
Terhaar, Steffen;Krueger, Oliver;Paschereit, Christian Oliver
通讯作者:
Paschereit, Christian Oliver