Passive suppression of thermoacoustic instability in a Rijke tube
IFAC-PapersOnLine, 2016 Abstract This article investigates passive stabilization of thermoacoustic dynamics in a Rijke tube by using a Helmholtz resonator. Under certain assumptions, the mathematical model of the dynamics is shown to fall into the linear time-invariant multiple time delay systems class of neutral type.
Umut Zalluhoglu, Nejat Olgac
openaire +1 more source
Pulsating burning of petroleum coke in the Rijke tube
Journal of Physics: Conference Series, 2019 Abstract In this paper, the combustion of petroleum coke is investigated. It is established that fluctuations of gas in the Rijke tube excited when petroleum coke burns with propane-air mixture. It is shown that over time the mixture supply can be significantly reduced due to the intensification of coke combustion by oscillations.
Larionov V. +4 more
openaire +2 more sources
Thyroid screening in early pregnancy: Pros and cons [PDF]
, 2018 Universal thyroid screening in pregnancy is a key debate in thyroidology and obstetrics. It is well-established that thyroid hormones are essential for maintaining pregnancy and optimal fetal development.
John H. Lazarus +6 more
core +3 more sources
Fluid-structure interaction on the combustion instability [PDF]
, 2012 The multi-domain problem, the limit cycle behaviour of unstable oscillations in the LIMOUSINE model combustor has been investigated by numerical and experimental studies.
Altunlu, A.C. +5 more
core +1 more source
Spatio-temporal Person Retrieval via Natural Language Queries
, 2017 In this paper, we address the problem of spatio-temporal person retrieval from multiple videos using a natural language query, in which we output a tube (i.e., a sequence of bounding boxes) which encloses the person described by the query.
Harada, Tatsuya +3 more
core +1 more source
Thermal and fluid dynamic analysis of partially premixed turbulent combustion driven by thermo acoustic effects [PDF]
, 2013 Thermo-acoustic instability can be caused by the feedback mechanism between unsteady heat release, acoustic oscillations and flow perturbations. In a gas turbine combustor limit cycles of pressure oscillations at elevated temperatures generated by the ...
Kok, J.B.W. +3 more
core +1 more source
Diagnostic value of urinary dysmorphic erythrocytes in clinical practice [PDF]
, 2010 Background: In clinical practice, discriminating between glomerular and nonglomerular causes of hematuria is often difficult. Dysmorphic red blood cells (dRBC) in the urinary sediment are claimed to be effective, but the cutoff points in the literature ...
Cransberg, K. (Karlien) +4 more
core +2 more sources
A projektmunka hatásai a természettudományos tantárgyak tanulásában [PDF]
, 2011 A természettudományok oktatása csak akkor lehet sikeres, ha képesek leszünk választ adni a 21. század kihívásaira. A hagyományos elven oktatott természettudományos tantárgyak a legtöbb gyermek számára érthetetlen és felesleges nyűgnek számítanak.
Beke, Tamás
core +1 more source
Nonlinear self-excited thermoacoustic oscillations of a ducted premixed flame: Bifurcations and routes to chaos [PDF]
, 2014 Thermoacoustic systems can oscillate self-excitedly, and often non-periodically, owing to coupling between unsteady heat release and acoustic waves. We study a slot-stabilized two-dimensional premixed flame in a duct via numerical simulations of a $G ...
Juniper, MP, Kashinath, K, Waugh, IC
core +1 more source
Using LES to Study Reacting Flows and Instabilities in Annular Combustion Chambers [PDF]
, 2012 Great prominence is put on the design of aeronautical gas turbines due to increasingly stringent regulations and the need to tackle rising fuel prices.
A Giauque +36 more
core +4 more sources