Results 121 to 130 of about 70,875 (242)

A Relational Perspective on Land in Armed Conflict: Analysing the Village Guard Mobilisation in Turkey

Studies in Ethnicity and Nationalism, EarlyView.
ABSTRACT This article examines the Turkish state's Village Guard system, revived in the 1980s as part of its counterinsurgency strategy against the Kurdistan Workers Party (PKK). While often framed as a defensive militia, the Village Guards became central to the state's exceptional governance in Kurdistan, both facilitating military control and ...
Francis O'Connor, Adnan Çelik, Ayhan Işık, Joost Jongerden   +3 more
wiley   +1 more source

Numerical simulation study on two-phase flow of thermal runaway evolution and jet fire of 18650 lithium-ion battery under thermal abuse

Case Studies in Thermal Engineering
The influence of particles on the external jet flame generated by 18650 lithium-ion batteries during thermal runaway is considered. A model that employed multi-component Navier-Stokes equations to consider gas-phase flow, and used the Lagrangian method ...
Jia-hao Wang, Ziqi Jiang, Mei Mei, Huihe Qiu, Ying Wang   +4 more
doaj   +1 more source

Ignition Delay Times of Kerosene (Jet-A)/Air Mixtures

, 2014
Ignition of Jet-A/air mixtures was studied behind reflected shock waves. Heating of shock tube at temperature of 150 C was used to prepare a homogeneous fuel mixture. Ignition delay times were measured from OH emission at 309 nm and from absorption of He-
Andrey Yu. Starikovskiy, Chaos, Dagaut, Dean, Edwards, Gueret, Kumar, Li, Petersen, Petersen, Pfahl, Starikovskiy, Vargaftik, Vasu, Victor P. Zhukov, Vladislav A. Sechenov, Wang, Zhukov, Zhukov, Zhukov, Zhukov, Zhukov, Zhukov   +22 more
core   +1 more source

Effect of momentum flow ratio on entrainment of a confined coaxial jet in a co-flow

Engineering Applications of Computational Fluid Mechanics
Iron ore pellet production processes produce large amounts of CO2 emissions when burning fossil fuels. One example is the grate-kiln process, where normally a coal flame is used to indurate pellets.
N. Martin Östman, I. A. Sofia Larsson, T. Staffan Lundström, Daniel Marjavaara, Fredrik Normann   +4 more
doaj   +1 more source

Pollutant formation in fuel lean recirculating flows [PDF]

An opposed reacting jet combustor (ORJ) was tested at a pressure of 1 atmosphere. A premixed propane/air stream was stabilized by a counterflowing jet of the same reactants.
Sawyer, R. F., Schefer, R. W.
core   +1 more source

Jet flames from noncircular burners

Sadhana, 1997
Gas jets from noncircular exits entrain more air from surroundings than jets from circular exits of equivalent area. Because the mixing rate of fuel and air governs the combustion and pollutant emission of diffusion flames and partially premixed flames, noncircular geometries offer a passive control of the flame characteristics.
openaire   +2 more sources

Carbon‐based materials from renewable sources: Challenges and perspectives with a focus on green coconut

Journal of Chemical Technology &Biotechnology, Volume 101, Issue 3, Page 477-493, March 2026.
Abstract This article presents a comprehensive examination of agricultural production, biomass generation, and its transformation into biochar, with a particular emphasis on green coconut waste as a primary resource. It underscores the link between agriculture and substantial biomass output, shedding light on the ecological issues associated with solid
Yslaine Andrade de Almeida, Iara de Fatima Gimenez, Ledjane Silva Barreto, Isis Nayra Rolemberg Prudente, Hericles Campos dos Santos   +4 more
wiley   +1 more source

Non-linear simulations of combustion instabilities with a quasi-1D Navier-Stokes code

, 2010
As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities with high ...
Allam, Annaswamy, Baillot, Bell, Boyer, Candel, Cohen, Culick, Culick, Davies, Disselhorst, Ditaranto, Dowling, Ducruix, Fichera, Fleifil, Keller, Levine, McManus, Nils Erland L. Haugen, Peters, Poinsot, Polifke, Polifke, Prasad, Rayleigh, Schuller, Sigurd Sannan, White, Øyvind Langørgen   +29 more
core   +1 more source

A Scalable, Durable, Fire‐Safe All‐Day Passive Radiative Cooling Coating for Sustainable Buildings

Advanced Functional Materials, Volume 36, Issue 10, 2 February 2026.
This study reports a scalable, durable coating that combines a fire‑retardant copolymer adhesive, hollow glass microspheres, and boron oxide to achieve passive radiative cooling with over 94% solar reflectance and >95% mid‑infrared emissivity. The coating maintains performance after UV and rain exposure and exhibits UL‑94 V‑0 fire resistance, enabling ...
Zhewen Ma, Yuanhao Feng, Alex Y. Song, Toan Dinh, Min Hong, John Bell, Boyou Hou, Pingan Song, Wei Zheng   +8 more
wiley   +1 more source

Study on characterization of flame propagation of spontaneous ignition caused by high-pressure hydrogen leakage

Case Studies in Thermal Engineering
As an ideal energy source, hydrogen is highly susceptible to spontaneous ignition once leaked, which is an urgent issue that needs to be addressed. Based on the shock tube model, this paper investigates flame propagation under various pressures, tube ...
Gan Cui, Yixuan Li, Qiaosheng Zhang, Juerui Yin, Di Wu, Xiao Xing, Jianguo Liu   +6 more
doaj   +1 more source