Results 31 to 40 of about 3,883 (153)

The 1974 West Flank Eruption of Mount Etna: A Data-Driven Model for a Low Elevation Effusive Event

Frontiers in Earth Science, 2020
Low elevation flank eruptions represent highly hazardous events due to their location near, or in, communities. Their potentially high effusion rates can feed fast moving lava flows that enter populated areas with little time for warning or evacuation ...
Charline Lormand, Andrew J. L. Harris, Magdalena Oryaëlle Chevrel, Sonia Calvari, Lucia Gurioli, Massimiliano Favalli, Alessandro Fornaciai, Luca Nannipieri   +7 more
doaj   +1 more source

Casing effusion cooling

, 2014
The design, modelling and testing of a film cooling system intended for the casing of an unshrouded HP turbine rotor is described in this thesis. Due to the dense network of small film cooling holes employed in such a system, this is often referred to as a casing effusion cooling scheme.
openaire   +1 more source

Unified Scaling Law for Lengths of Basaltic Lava Flows: Dependence on Erupted Volume and Effusion Rate

Geophysical Research Letters
Morphological scaling laws for basaltic lava flows, linking flow dimensions and eruption conditions, are essential for hazard assessment and geological analysis of basaltic eruptions.
Takafumi Maruishi, Tomofumi Kozono, Takahiro Miwa, Eisuke Fujita   +3 more
doaj   +1 more source

Cooling Performance of Impingement–Effusion Double-Wall Configurations Under Atmospheric and Elevated Pressures

Applied Sciences
The combustor liner of the modern aero-engine operates under extreme thermal loads with limited coolant supply, necessarily making efficient cooling approaches important.
Rongxing Zhang, Wei Li, Jianbai Jiang, Xudong Lang, Jinxin Dai, Tianyou Lian, Xiaoxiang Shi, Wei Li   +7 more
doaj   +1 more source

Conjugate Heat Transfer and Thermal Stress Analysis of a Gas Turbine Double-Wall Cooling System with a Diamond-Type TPMS Effusion

Energies
This research numerically investigates the cooling performance of Diamond-type triply periodic minimal surface (TPMS) networks as a gas turbine effusion cooling layer, augmented with various jet impingement configurations. The study analyzes the internal
Kirttayoth Yeranee, Chao Xu, Yuli Cheng, Yu Rao   +3 more
doaj   +1 more source

LES Analysis of CO Emissions from a High Pressure Siemens Gas Turbine Prototype Combustor at Part Load

Energies, 2020
This work contributes to the understanding of mechanisms that lead to increased carbon monoxide (CO) concentrations in gas turbine combustion systems. Large-eddy simulations (LES) of a full scale high pressure prototype Siemens gas turbine combustor at ...
Pascal Gruhlke, Christian Beck, Bertram Janus, Andreas M. Kempf   +3 more
doaj   +1 more source

Modelling and Simulation of Effusion Cooling—A Review of Recent Progress

Energies
Effusion cooling is often regarded as one of the critical techniques to protect solid surfaces from exposure to extremely hot environments, such as inside a combustion chamber where temperature can well exceed the metal melting point.
Hao Xia, Xiaosheng Chen, Christopher D. Ellis   +2 more
doaj   +1 more source

Numerical Investigations on the Effects of Dome Cooling Air Flow on Combustion Characteristics and Emission Behavior in a Can-Type Gas Turbine Combustor

Aerospace
To meet the requirements of achieving higher efficiency and lower NOx pollution, the flame temperature in gas turbine combustors increases continually; thus, the effusion-cooling technology has been used to ensure the combustor liner remains within the ...
Chenzhen Ji, Wentao Shi, Enlei Ke, Jiaying Cheng, Tong Zhu, Chao Zong, Xinyan Li   +6 more
doaj   +1 more source

Textural Insights Into the Evolving Lava Dome Cycles at Santiaguito Lava Dome, Guatemala

Frontiers in Earth Science, 2018
The structures and textures preserved in lava domes reflect underlying magmatic and eruptive processes, and may provide evidence of how eruptions initiate and evolve. This study explores the remarkable cycles in lava extrusion style produced between 1922
Emma Rhodes, Ben M. Kennedy, Yan Lavallée, Adrian Hornby, Adrian Hornby, Matt Edwards, Gustavo Chigna   +6 more
doaj   +1 more source

Characterizing thermal transitions of the 2018 Shinmoe-dake eruption in Japan using Himawari-8 high-frequency infrared imagery and seismic data

Earth, Planets and Space
Discrete explosive eruptions, including vulcanian eruptions, occur at various stages during the effusion of viscous lava. However, the differences in occurrence time and mechanisms are not yet well understood or categorized.
Takayuki Kaneko, Mie Ichihara, Atsushi Yasuda, Takao Ohminato, Atsushi Watanabe, Kenji Takasaki   +5 more
doaj   +1 more source