Abdulsattar Jawad

University of Technology-Iraq · Mechanical engineering department

Estimating the heat loss encountered in many situations with a hot surface buried in a permeable material greatly contributes to the energy conservation and cost analysis of numerous engineering systems. An experimental study was conducted on the natural convection heat transfer from a triangular prism positioned in a 0.2 m 2 test section filled by...

The natural convection from a heated triangular prism buried in a porous medium packed into a 0.2 m square duct is investigated experimentally. The porous medium comprises glass balls of 3 mm size saturated by air as the working fluid. The 26 mm copper equilateral triangular prism of 0.2 m length is placed at the center of the duct with its base ei...

This study investigates the effect of curvature ratio on the liquid-gas mixing in an air humidification process by choosing the optimum positioning of nozzles matrix fixed prior to a bent duct. The present study is considered as a simulation of the gas turbine compressor inlet air cooling by the fogging technique. The experiments were conducted usi...

An experimental investigation is carried out on the use of water injection on the humidification process of air with a steady flow that travels during the curved part of a duct with a constant cross section. The naturally generated turbulences will surely aid the mixing process between the injected water droplets and the air to enhance both the mas...

Experimental and numerical investigations are carried out on the use of water injection in a humidification process of air traveling steadily through the divergent part of a wind tunnel. This work aims to study the optimum positioning of the water injector fixed at a divergent portion and to evaluate its impact on the liquid-gas mixing in an air hu...

This study investigates the effect of using olive oil on the pollutants emissions in the continuous combustion chamber. The bio-fuels used are mixtures of olive oil with two types of hydrocarbon fuels (gas oil and kerosene). The pollutants measured include carbon monoxide CO, unburned hydrocarbon UHC, soot and nitrogen oxide NOx .It is found that a...

This study investigates the effect of Castor oil on the pollutants emissions in the continuous combustion chamber. The bio-blend fuels used are mixtures of Castor oil with two types of hydrocarbon fuels (gas oil and kerosene). The pollutants measured include carbon monoxide CO, unburned hydrocarbon UHC, soot and nitrogen oxide NO x. It is found tha...

The present work represents an investigation for the pollutants emission when adding water to air in a continuous combustion chamber. Direct water injection into the chamber with water/fuel ratio up to 0.8, as well as, humidifying the inlet air with water prior to the chamber by changing humidity between 20 to 100%, has been examined at different e...

Pollutants generation is strongly dependant on the firing temperature and reaction rates of the gaseous reactants in the gas turbine combustion chamber. An experimental study is conducted on a two-shaft T200D micro-gas turbine engine in order to evaluate the impact of injecting ethanol directly into the compressor inlet air on the exhaust emissions...

An experimental study is conducted on the utilization of the inlet ethanol injection technique in order to evaluate its impact on the performance of a two-shaft T200D mini-gas turbine engine. The maximum degradation recorded in power output was 32.8% at the climate temperature of 45 o C. Nevertheless, at that temperature, adding ethanol with Eth/LP...