Results 71 to 80 of about 268,971 (258)

Effect of Nozzle Height on the Combustion Dynamics of Jet Fires in Rotating Flow Fields

Fire
In this paper, the effect of nozzle height on the combustion dynamics of jet fires in rotating flow fields (JFRFFs) is systematically investigated through experimental and numerical simulations.
Qiang Zhang, Jinjiang Wang, Laibin Zhang, Pengchao Chen, Xiaole Qin, Kuibin Zhou, Yufeng Yang, Jiancheng Shi   +7 more
doaj   +1 more source

Study on the influence of enclosed vertical channels on downward flame spread over XPS thermal insulation materials

Case Studies in Thermal Engineering, 2019
In this paper, the small-scale combustion experiments are carried out in combination with theoretical analysis to study the influence of length-width ratio (α) of enclosed vertical channel on the downward flame spread of XPS insulation material attaching
Minglun Cai, Song Chen, Yanhua Tang, Qing Li, Weiguang An   +4 more
doaj   +1 more source

The Impacts of Three Flamelet Burning Regimes in Nonlinear Combustion Dynamics [PDF]

, 2018
Axisymmetric simulations of a liquid rocket engine are performed using a delayed detached-eddy-simulation (DDES) turbulence model with the Compressible Flamelet Progress Variable (CFPV) combustion model.
Nguyen, Tuan, Sirignano, William A.
core   +2 more sources

Chemically Doped Conductive Polymers for Wearable Health Monitoring

Advanced Materials Technologies, EarlyView.
Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo, Jian Song, Hong Hu, Le Zheng, Lei Zhang, Charles H. Lawrie   +5 more
wiley   +1 more source

In Situ Photopolymerization of Smectic B Liquid‐Crystalline Electrolytes from Mesogenic Phosphate–Diacrylate/Ionic Liquid Complexes for High‐Performance Soft Ionic Actuators

Advanced Robotics Research, EarlyView.
A flexible liquid‐crystalline electrolyte membrane via in situ photopolymerization of a phosphate‐functionalized mesogen, ionic liquid, and diacrylate monomer is developed. The resulting smectic B (SmB)‐phase structure enables 2D ion transport with high conductivity (10−4 S cm−1).
Chengyang Liu, Masafumi Yoshio
wiley   +1 more source

Flame Length and Geometry as Key Indicators for Real-Time Thermal Stress Monitoring in a Multi-Burner Combustion Chamber [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study investigates the relationship between flame length measurements and the temperature of the refractory lining in combustion chambers with multiple burners interacting in terms of fluid dynamics.
M. Arnold, M. Hoyer, S. Keller, S. Keller   +3 more
doaj   +1 more source

Temperature and pollution control in flames [PDF]

, 2004
We apply control theory for PDEs to flame control. The targeted flame is calculated with complex chemistry. For pollutant control in flames we study both the control of temperature distribution in the flame and flame length at given fuel rate in the flow.
Debiane, L., Ern, A., Ivorra, Benjamin, Mohammadi, Bijan, Nicoud, F., Pitsch, H., Poinsot, T   +6 more
core  

Flame extension lengths beneath a confined ceiling induced by fire in a channel with longitudinal air flow [PDF]

, 2018
This paper investigates the length of flame extension for an impinging flame underneath the confined ceiling in a channel with longitudinal air flow. Previous works in this field have been primarily concerned with un-confined ceilings and no forced air ...
Carvel, Ricky O., Chen, LongFei, Hu, Longhua, Qiu, Ang   +3 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Numerical simulation study on combustion characteristics of square hollow oil pool fire in ship cabins [PDF]

E3S Web of Conferences
To study the combustion phenomenon of square hollow fire sources in ship cabins, PyroSim software was used to establish numerical models of different inner and outer edge lengths of the same fire source area. FDS software was used to numerically simulate
Li He, Li Kun, Huang Qing, Wang Enwei
doaj   +1 more source