in this work, result of experimental investigation on interaction of fuel spray generated by a swirled type injector, with air motion in a prototype cylinder are presented. experiments were carried out by planar imaging and particle image velocimetry (piv) techniques in order to provide information about the spray structure evolution and instantaneous velocity distribution of air motion and fue...

On the basis of 2D hydro-base simulations, where a super-high velocity spherical DT impactor collides against a spherically-compressed stationary DT main fuel, the ignition and burn dynamics in the impact fast ignition (IFI) scheme has been investigated. It is found that the energy conversion from the impactor kinetic energy to its internal energy at the collision is not so high (20 ~ 40 %) sin...

For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/...

High-velocity oxy-fuel (HVOF) spray coating plays a major role in many surface treatment methods, which tend to improve erosion and corrosion resistance properties. HVOF is well known for its dense high-quality ability. This due the less in-flight exposure time, tends have oxide content because of high-velocity Among number process parameters, porosity hardness are predominant factors while con...

We demonstrate a microfluidic fuel cell incorporating hydrogen peroxide oxidant. Hydrogen peroxide H2O2 is available at high concentrations, is highly soluble and exhibits a high standard reduction potential. It also enables fuel cell operation where natural convection of air is limited or anaerobic conditions prevail, as in submersible and space applications. As fuel cell performance criticall...

development of efficient electrocatalysts for oxygen reduction reaction (orr) is one of the most important issues for optimizing the performance of fuel cells and metal-air batteries. the introduction of nitrogen into carbon nanostructures has created new pathways for the development of non-precious electrocatalysts in fuel cells. in this work, nitrogen-doped graphene (ng) was synthesized by a ...

TC18 titanium alloy is an essential material for aircraft landing gear. To reveal the wear and corrosion mechanisms of gear in service, a WC-12Co coating on substrate was prepared by High-Velocity Air-Fuel (HVAF) spraying based optimized process parameters, analysis microscopic characterization results materials involved performed. Based computational fluid dynamics (CFD) method, combustion rea...

A photoassisted oxygen reduction reaction (ORR) through I(-)/I3(-) redox couple was investigated for proton exchange membrane (PEM) fuel cell cathode reaction. The I(-)/I3(-)-based liquid cathode was used to replace conventional oxygen cathode, and its discharge product I(-) was regenerated to I3(-) by photocatalytic oxidation with the participation of oxygen. This new and innovative approach m...