Spurred by the world’s attention to pollution emissions from commercial aero-engines, International Civil Aviation Organization (ICAO) has made more stringent emission regulations for civil aircraft engines, especially NOx emission.This paper develops a Five-Point lean direct injection (LDI) combustor with three swirler schemes reduce of engines. The flowfield is studied numerically. Moreover, ...

Solid waste is a promising renewable fuel that can substitute conventional fuel. According to the researchers, thermoconversion of solid such as municipal or residual household (RHW) beneficial society. However, due its heterogeneity, gasification RHW more complex. This review article discusses steps must undergo before and state art gasification. First, characterisation methods are surveyed. S...

While operating at light loads, diesel pilot-ignited natural gas engines with lean premixed suffer from poor combustion efficiency and high methane emissions. This work investigates the limits of low-load operation for a micro-pilot engine that uses stoichiometric mixture to enable nitrogen oxide emission control. By optimizing hardware, conditions, injection strategies, this study focused on d...

CONTEXT Diabetes is a chronic long-term disease with an increasing incidence. There is a need to increase access to effective care and to ensure such care is delivered as locally as possible. The geographical spread of NHS Highland Scotland presents additional challenges to ensuring a skilled workforce given education is normally work-based tuition and assessment. The aim of this pilot project ...

Several laser plasma accelerator schemes are reviewed, with emphasis on the Pl,asma Beat Wave Accelerator (PBWA). Theory indicates that a very high acceleration gradient, of order 1 GeV/m, can exist in the plasma wave driven by the beating lasers. Experimental results obtained on the PBWA experiment at UCLA confirms this. Parameters related to the PBWA as an accelerator system are derived, amon...

No fighter pilot ever flies a combat mission solo. \Ve always fly as a teamwith our wingmen, who provide mutual support and m<Lximizeour ability to accomplish our objectives. It's impossible to win solo because so much needs to get done in a rapidly changing environment, and the missions are extremely complex. In order to e:\l1loit the advantages of a unified team, we assign roles and responsib...

The Japanese government has set the goal of achieving net zero GHG emissions by 2050 and aims to reduce 46% from 2013 level 2030 as an interim target. Natural gas is one low carbon fuels with potential emissions, development technology that utilizes natural important achieve this

Low-speed two-stroke marine diesel engines dominate the modern global long-distance transportation market; with increasingly stringent regulations, combustion and emissions of these is gaining intense interest. The primary objective present study was to understand effects air-fuel mixing by pilot injection strategy on emission characteristics through a numerical study. Specifically, computation...