Results 51 to 60 of about 32,261 (222)

Experimental Study on Flame Response Characteristics of a Non-Premixed Swirl Model Combustor

Energies, 2023
Non-premixed swirl combustion has been widely used in pieces of industrial combustion equipment such as industrial boilers, furnaces, and certain specific gas turbine combustors.
Chen Yang, Yong Liu, Xiang Zhang, Hao Li, Xinkun Ge, Feng Jin, Chongyang Liu   +6 more
doaj   +1 more source

Effect of different flue gas recirculation rates on low‐NOx combustion characteristics: A numerical simulation based on the combustion process of a gas boiler

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract NOx emissions from gas boilers severely impact the environment, and flue gas recirculation (FGR) technology can effectively reduce such emissions, yet the effects of different FGR rates on combustion performance and NOx formation remain unclear. This study thus used numerical simulation (via ANSYS Fluent, adopting the realizable k‐ε turbulence
Chao Min, Shuhao Xu, Yitao Yang, Peng Wang   +3 more
wiley   +1 more source

DNS and Combined Laser Diagnostics of Turbulent Combustion

Journal of Thermal Science and Technology, 2008
With the developments of computer technologies, three-dimensional direct numerical simulations (DNS) of turbulent combustion have been realized with a detailed or reduced kinetic mechanism.
Mamoru TANAHASHI, Makoto SATO, Masayasu SHIMURA, Toshio MIYAUCHI   +3 more
doaj   +1 more source

Sustainable Optimization of Emissions and Performance in Hydrogen Port Injection Diesel Engines Through Port Timing and Injection Duration Modulation

Energy Science &Engineering, EarlyView.
Optimizing hydrogen port injection in diesel engines significantly improves efficiency and reduces emissions, demonstrating a sustainable dual‐fuel strategy for cleaner transportation solutions and lower environmental impact. ABSTRACT This study evaluates a single‐cylinder hydrogen port injection (HPFI) Diesel engine by systematically varying the ...
Kaustubh R. Kapadani, Nithyananda B S, Shrishail B. Sollapur, Rajesh K, Ashish M. Dharme, Hemant K, Nagaraj Ashok, Abhijit Bhowmik   +7 more
wiley   +1 more source

Buoyant Unstable Behavior of Initially Spherical Lean Hydrogen-Air Premixed Flames

Energies, 2014
Buoyant unstable behavior in initially spherical lean hydrogen-air premixed flames within a center-ignited combustion vessel have been studied experimentally under a wide range of pressures (including reduced, normal, and elevated pressures).
Zuo-Yu Sun, Guo-Xiu Li, Hong-Meng Li, Yue Zhai, Zi-Hang Zhou   +4 more
doaj   +1 more source

Combustion of Waste Rapeseed Oil and Jet Propellant‐8 Blends in a CI Engine

Energy Science &Engineering, EarlyView.
Using waste rapeseed oil (WRO) mixed with Jet Propellant‐8 (JP‐8) as fuel for a compression ignition engine. ABSTRACT The study examines the potential of blending waste rapeseed oil (WRO) with Jet Propellant‐8 (JP‐8) as a fuel for compression ignition (CI) engines.
Grzegorz Pawlak, Krzysztof Kosiuczenko, Patryk Płochocki, Mariusz Wesołowski, Jarosław Molenda, Tomasz Skrzek, Dominik Czerwonka   +6 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

Multiobjective Optimization of Hydrogen‐Assisted Calophyllum inophyllum Biodiesel Operation in a Compression Ignition Engine

Energy Science &Engineering, EarlyView.
Tri‐fuel diesel–Calophyllum inophyllum biodiesel–hydrogen operation was tested over 96 points in a diesel engine. Eight performance and emission metrics feed a preference‐agnostic Bootstrapped Empirical Multiobjective Ranking and Selection methodology, revealing load‐blend‐hydrogen windows that increase efficiency, restrain smoke, and expose NOx trade ...
C. Naga Kumar, Nageswara Rao Dayadi, J. M. Babu, Srinivasa Reddy Yarram, Ravikiran Chintalapudi, Bridjesh Pappula   +5 more
wiley   +1 more source

Hybrid Oxygen Enrichment and Preheating Strategy for Performance Recovery in Ultra‐Lean Micro–Trapped Vortex Combustors

Energy Science &Engineering, EarlyView.
Ultra‐lean H2 micro‐combustor performance is boosted through regulated O2 enrichment and inlet preheating. A 16‐case Taguchi study (ϕ = 0.3) shows: controlled enrichment and heating increase radiative output and efficiency, but excessive O2/temperature causes flashback.
Anouar Benzitouni, Abdelhakim Settar, Boudinar Naouam, Salaheddine Azzouz, Zakaria Mansouri   +4 more
wiley   +1 more source

A Level Set Approach for a Premixed Flame Based on a New Concept of Flame Speed

Journal of Thermal Science and Technology, 2011
In this paper we propose a new level set approach to describe not only a flame's surface but also to the flame's spatial distribution. First, we derived the mathematical formulation for a one-dimensional laminar premixed flame, where the steady
Yingjie LIU, Nobuyuki OSHIMA
doaj   +1 more source