Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Asok K. Sen"'
Publikováno v:
International Journal of Rotating Machinery, Vol 2009 (2009)
We examine the dynamics of a healthy rotor and a rotor with a transverse crack, which opens and closes due to its self weight. Using discrete wavelet transform, we perform a multiresolution analysis of the measured vibration signal from each of these
Externí odkaz:
https://doaj.org/article/901c8b80007b4522a10e6aa80dde0e49
Autor:
Darko Ogrin, Asok K. Sen
Publikováno v:
Theoretical and Applied Climatology. 123:733-739
Long instrumental records of meteorological variables such as temperature and precipitation are very useful for studying regional climate in the past, present, and future. They can also be useful for understanding the influence of large-scale atmosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ec8b0bfaebebbca737cec8aaa0da80c
https://doi.org/10.1007/s00704-015-1388-z
https://doi.org/10.1007/s00704-015-1388-z
Publikováno v:
Meccanica. 49:2285-2297
This study investigates the cycle-to-cycle variations (CCV) of heat release in a simulated spark ignition engine fueled by gasoline–ethanol blends. The equivalence ratio of the combustible mixture is changed from 0.7 to 0.9 and 1.0, i.e., from very
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c34052d5c31ec552cd70a78ec1565409
https://doi.org/10.1007/s11012-014-9974-1
https://doi.org/10.1007/s11012-014-9974-1
Autor:
Keyan Fang, Asok K. Sen
Publikováno v:
Journal of Coupled Systems and Multiscale Dynamics. 2:9-14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::476c36ddb617705b1c725024ecdffa23
https://doi.org/10.1166/jcsmd.2014.1034
https://doi.org/10.1166/jcsmd.2014.1034
Publikováno v:
MATEC Web of Conferences, Vol 252, p 01008 (2019)
We have studied cyclic heat release variability in a spark-ignition engine under exhaust gas recirculation (EGR), using nitrogen to simulate EGR. Five EGR levels are examined. We used wavelet analysis to identify the dominant modes of fluctuation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3e72f34fa035b31a99c143b02cea59c
https://doi.org/10.1051/matecconf/201925201008
https://doi.org/10.1051/matecconf/201925201008
Publikováno v:
Fuel. 103:1138-1143
Oxygenates may be added to diesel oil to help reduce exhaust emissions from diesel engines. This study evaluates the effect of adding ethyl-tert-butyl ether (ETBE) to diesel oil on the physicochemical properties of the mixture. ETBE is added in volum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b26adc5a0ffc6decd4f2a27026bd5bc
https://doi.org/10.1016/j.fuel.2012.09.004
https://doi.org/10.1016/j.fuel.2012.09.004
Wavelet analysis of low-frequency variability in oak tree-ring chronologies from east Central Europe
Autor:
Zoltán Kern, Asok K. Sen
Publikováno v:
Open Geosciences, Vol 8, Iss 1, Pp 478-483 (2016)
This study investigates the low-frequency (interannual and longer period) variability in three hydroclimatic records from east Central Europe. Two of these records consist of climate proxies derived from oak-tree rings in Bakta forest, and Balaton Hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9f73a8e45147c0579a6a8dc0b16ea8a
https://doi.org/10.1515/geo-2016-0044
https://doi.org/10.1515/geo-2016-0044
Publikováno v:
Applied Thermal Engineering. 36:314-324
The purpose of this study is to investigate the effect of adding small amounts of hydrogen to gasoline–air mixtures on the performance and exhaust emission characteristics of a spark ignition engine. Four air–fuel ratios are used ranging from sto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcfa507787efc272b5547cfe94d2d61a
https://doi.org/10.1016/j.applthermaleng.2011.10.039
https://doi.org/10.1016/j.applthermaleng.2011.10.039
Publikováno v:
Applied Energy. 88:4860-4866
Using wavelet-based multiresolution analysis, this study investigates the effect of hydrogen addition on cyclic variability in a natural gas spark ignition engine. The engine is operated at 3000 rpm, and a lean combustible mixture with excess air rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c2451963fdcc8a5f6c9b4ea85d408bd
https://doi.org/10.1016/j.apenergy.2011.06.030
https://doi.org/10.1016/j.apenergy.2011.06.030
Publikováno v:
Applied Thermal Engineering. 31:2247-2253
This study investigates the effect of exhaust gas recirculation (EGR) on the cycle-to-cycle variations (CCV) in combustion in a natural gas spark ignition engine. The engine is operated at 2000 rpm and a stoichiometric fuel-air mixture is used. The E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a7b764e5b6f148d6089dc7beac8abe9
https://doi.org/10.1016/j.applthermaleng.2011.03.018
https://doi.org/10.1016/j.applthermaleng.2011.03.018