Fuel cells, widely regarded as the 21st century energy-conversion devices, convert chemical energy directly into electricity with high energy density at low operating temperature, good performance operation, and high ...

Direct Numerical Simulations (DNS) are carried out to study the channel flow V-shaped roughness on both wall. The roughness is modeled by the immerse boundary method for passive heat transport in a turbulent channel flow ...

Modern jet engines reach very high combustion temperatures to achieve higher thermal efficiencies which can damage the turbine blades. Damage can occur in the turbine blade due to the temperature difference between the ...

With the shortage of fossil fuel and the increasing environmental awareness, wind energy is becoming more and more important. As the market for wind energy grows, wind turbines and wind farms are becoming larger. ...

In gas turbine combustion system, pollution emissions like CO and NOx produce a hard impact on ecosystem. These emissions are due to combustion instability during which the flame undergoes rapid oscillations and eventually ...

Turbine inlet air temperatures may exceed the melting points of the turbine blade material. Proper cooling processes increase turbine blade durability as well as the engine efficiency by allowing higher combustion temperatures ...

The cooling system of the gas turbine blades plays a critical role in increasing the thermal efficiency and power output of advanced gas turbine engines. In fact, by increasing the heat transfer, the turbine blade can ...

The fuel cell is an electrochemical energy conversion device that produces electricity based on an electrochemical reaction. From the diverse types of fuel cell the proton exchange membrane fuel cell (PEMFC) has better ...