Results 61 to 70 of about 3,874 (192)

Role of pocket formation in the extinction of methane flames subject to strong turbulence

Applications in Energy and Combustion Science
Despite extensive studies of local and global extinction, it remains unclear how local flame dynamics contribute to the global evolution of a turbulent flame at large Karlovitz numbers. Furthermore, the extent to which canonical laminar flame properties,
Patrick A. Meagher, Samuel Calello, III, Xinyu Zhao   +2 more
doaj   +1 more source

Quantitative Structure–Property Relationship for High Flash Point of Ester Oil Molecules and Its Experimental Verification

High Voltage, EarlyView.
ABSTRACT With the increasing voltage of ester oil‐filled transformers and their application in offshore wind power, developing high‐performance, fire‐resistant esters is crucial for enhancing transformer safety. Flash point, a key indicator of fire‐resistant performance for esters, is directly related to the molecular structures.
Jingwen Zhang, Jian Hao, Per‐Olof Åstrand, Hongwei Li, Ruijin Liao   +4 more
wiley   +1 more source

Optical multi-spark ammonia combustion engine: numerical analysis and validation

Frontiers in Mechanical Engineering
Ammonia (NH3) stands out as a promising candidate for fueling internal combustion engines, owing to its high hydrogen content and well-established production and transport infrastructure. Nevertheless, its inherently low flame speed and reactivity pose a
Rafael Menaca, Mickael Silva, Kalim Uddeen, Fahad Almatrafi, Qinglong Tang, James W. G. Turner, Hong G. Im   +6 more
doaj   +1 more source

METHOD OF CALCULATION OF AIR-FUEL MIXTURE MINIMUM IGNITION ENERGY IN GAS ENGINE [PDF]

Avtomobilʹnyj Transport (Harʹkov), 2013
The improved method of minimum ignition energy calculation in a gas engine that takes into account radiation energy losses in a flame kernel has been presented. Comparison of calculation results using this model with experimental data has been performed.
Abramchuk, F., Kabanov, A., Shvydkyi, D.
doaj  

Masculinity, Prostitution, and the Imaginary Northwest in Chinese Travel Writings About Shanxi and Western Inner Mongolia, 1920–1949

Gender &History, EarlyView.
ABSTRACT This article considers travel writings by metropolitan men in Republican China about Shanxi and western Inner Mongolia as a case study to further explore the transformations and continuities of Chinese masculinities. Drawing upon a range of popular travel narratives, it shows that so‐called “Worn‐Out Shoes (poxie)” – women perceived as ...
Amanda Zhang
wiley   +1 more source

Numerical investigation on spark ignition and flame kernel formation of lean premixed hydrogen/air flame under ICE condition

Automotive and Engine Technology
The present work investigates the spark ignition and flame kernel formation processes in hydrogen–air mixtures under real engine-relevant conditions from a chemical-physical perspective.
Chunkan Yu, Brijesh Kinkhabwala, Chunwei Wu, Sven Eckart, Thomas Koch   +4 more
doaj   +1 more source

Effects of Water Mist on the Initial Evolution of Turbulent Premixed Hydrogen/Air Flame Kernels

Energies
In this study, a series of carrier-phase direct numerical simulations are conducted on spherical expanding premixed hydrogen/air flames with liquid water addition.
Riccardo Concetti, Josef Hasslberger, Nilanjan Chakraborty, Markus Klein   +3 more
doaj   +1 more source

The Vicissitudes of the Nafs: Madness, Paralysis, and the Work of Transgression in Sufi Ethics

Anthropology of Consciousness, EarlyView.
ABSTRACT How should we theorize Sufi ethics when the practice of zikr (remembrance) that leads to spiritual enlightenment (tazkiyya) might also bring one to the brink of majzubiyat (madness)? What forms of regulation or restraint are imagined or enacted by practitioners to prevent spiritual boundlessness from perverting into its underside of paralysis (
Muhammad Osama Imran
wiley   +1 more source

The Effects of Canning on the In Vitro Solubility of Phosphorus in Pet Food

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Excess phosphate (P) intake through inorganic P (Pi) addition is known to cause various adverse health effects while declaration of use and amount in pet food in the EU is not regulated. Distinction between organic phosphate (oP) from feed ingredients and Pi with standard laboratory methods is impossible.
Sophia Löffelmann, Philipp‐Michael Beindorf, Sven Reese, Britta Dobenecker   +3 more
wiley   +1 more source

Impact of spark plug number of ground electrodes on engine stability

Ain Shams Engineering Journal, 2013
There are many different spark plug designs available in the market nowadays. Understanding the differences between them is beneficial in helping the engine to run properly and efficiently. In the present study, a group of four spark plugs with different
Ahmed A. Abdel-Rehim
doaj   +1 more source