| 1. |
- Hoeijmakers, Maarten, et al.
(author)
-
Flame dominated thermoacoustic instabilities in a system with high acoustic losses
- 2016
-
In: Combustion and Flame. - : Elsevier. - 0010-2180 .- 1556-2921. ; 169, s. 209-215
-
Journal article (peer-reviewed)abstract
- The thermoacoustic stability behaviour of a flame is experimentally investigated in the presence of large acoustic losses. Recently it has become clear that under such conditions an instability can occur due to an intrinsic local feedbackloop at the heat source. The experimental results confirm that despite significant acoustic losses, thermoacoustic instabilities can still be present. These findings imply that the effectiveness of passive thermoacoustic damping devices is limited by the intrinsic stability properties of the flame. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
|
|
| 2. |
- Hoeijmakers, Maarten, et al.
(author)
-
Flames in context of thermo-acoustic stability bounds
- 2015
-
In: Proceedings of the Combustion Institute. - : Elsevier BV. - 1540-7489. ; 35, s. 1073-1078
-
Journal article (peer-reviewed)abstract
- Bounds are derived for the acoustic losses such that a thermoacoustic system with a given flame can be guaranteed to be stable. The analysis is based on the flame's acoustic input-to-output properties represented by its scattering matrix. The developed analytical and numerical techniques allow estimating the maximum reflection coefficients (equivalently - acoustic losses) which are sufficient to ensure stable operation of a given burner. It is shown that the calculated numerical upper-bound is less conservative than the analytical one. The frequency dependence of the required acoustic losses provides (i) a thermo-acoustic signature of the flame and (ii) guidelines for the proper design of the up-and downstream acoustics from the flame. The method is illustrated on two burners/flames of premixed multiple Bunsen type. The frequency dependence of the upper bounds allows to identify those frequency ranges where the flame is more likely to cause instability of the complete system.
|
|
| 3. |
- Ploeg, Jeroen, et al.
(author)
-
Guest Editorial Introduction to the Special Issue on the 2016 Grand Cooperative Driving Challenge
- 2018
-
In: IEEE transactions on intelligent transportation systems (Print). - Piscataway, NJ : IEEE. - 1524-9050 .- 1558-0016. ; 19:4, s. 1208-1212
-
Journal article (peer-reviewed)abstract
- Cooperative driving is based on wireless communications between vehicles and between vehicles and roadside infrastructure, aiming for increased traffic flow and traffic safety, while decreasing fuel consumption and emissions. To support and accelerate the introduction of cooperative vehicles in everyday traffic, in 2011, nine international teams joined the Grand Cooperative Driving Challenge (GCDC). The challenge was to perform platooning, in which vehicles drive in road trains with short intervehicle distances. The results were reported in a Special Issue of IEEE Transactions on Intelligent Transportation Systems, published in September 2012 [item 1 in the Appendix].
|
|
