.... Excessive use of the secondary air results in a parasitic loss to the thermodynamic cycle of the engine so efficient use of the air is necessary to maintain efficiency. Convective heat transfer Engines Experimental Heat transfer Internal flow Mass Transfer Turbines Copyright © 2018...

.../gtcc_igcc.html [31] Incropera , F. P. , 2011 , Introduction to Heat Transfer , Wiley , Hoboken, NJ. [32] Min , J. K. , Jeong , J. H. , Ha , M. Y. , and Kim , K. S. , 2009 , “ High Temperature Heat Exchanger Studies for Applications to Gas Turbines ,” Heat Mass Transfer , 46...

... transfer Design optimization Droplet Environmental Evaporation Experimental Jets Mass Transfer Sprays Thermodynamics Two-phase Vaporization Marine diesel engines operate at high temperatures and use heavy oil with high sulfur content [ 1 ]. This leads to high emissions of nitrogen oxides...

.... As the process gas enters the column, carrying a quantity of NO, O 2 , and SO 2 , direct contact cooling condenses water vapor and begins the mass transfer reactions described in Table 1 to produce dilute sulfuric and nitric/nitrous acids. The key control variable (considering a given SO 2...

... to both cool components and seal cavities against hot gas ingestion. Efficient use of the secondary air is necessary as excessive use causes a parasitic loss in engine efficiency. Fluids Gas turbine technology Internal flow Jets Mass Transfer Shear Flows Turbines 06 07 2016 22...

.... Finite element Heat transfer Mass Transfer Natural convection Power Radiation Temperature Thermodynamics Turbines Unsteady Co- generation The temperature drop during natural cooling and the way in which the steam turbine restarts have a major impact on the cyclic lifetime of critical...

... results are shown to be in good agreement with the available experimental data, confirming the reliability of LES/FMDF method for numerical simulation of turbulent mixing in complex flow configurations. Computational fluid dynamics Jets Mass Transfer Modeling Turbulence Turbulent mixing...

..., and an ultrasonic measurement system was established to measure the dynamic oil film thickness. On the other hand, the unsteady oil film heat and mass transfer movement model was also established, and the numerical simulation to solve oil film motion by using computational fluid dynamic (CFD) commercial software...

... Mass Transfer Multiphase flows Phase change Sprays Two-phase Vaporization Greek Symbols α = heat transfer coefficient (W/(m 2 K)) δ = coefficient of diffusion π = pi ρ = density (kg/m 3 ) τ = particle time constant for Stokes flow φ = relative humidity...

...; this corresponds to higher exergy efficiency. The condenser pressure was observed to be slightly higher for R-410A than the other refrigerants. Condensation Convective heat transfer Cooling Heat exchangers Mass Transfer Thermodynamics Steam power plant condenser (SPPC) is a shell and tube heat...

... increase the evaporative cooling effect through the enhanced heat and mass transfer rates. In order to validate the droplet trajectory calculations and to explain the phenomena described in Sec. 3A , calculations have been carried out for inert (nonevaporating) droplets injected into a swirling annular...

.... A two-dimensional (2D) transient axisymmetric heat and mass transfer model was developed through the use of a lumped-parameter boundary-layer model to simulate the inlet flow and determine the time-dependent inlet duct heat transfer. This model was validated with transient 2D computational fluid...

...Nimrod Kapas; Tariq Shamim; Paul Laing This paper presents a computational investigation of the effect of mass transfer on the performance of selective catalytic reduction (SCR) catalysts, which are employed to reduce NO x emissions from diesel engines. The paper employs a single-channel based, one...

... to the FAC in heat transfer equipments such as heat exchangers and steam generators. The objective of this paper is to examine the role of the flow and mass transfer in bends under alkaline FAC conditions. Bends experience increased FAC rates compared with straight pipes, and are the most common components...

... distortion mass transfer vibrations Forced response of turbomachinery blades is an important mode of high cycle fatigue failure. Forced response is commonly generated by periodic aerodynamic unsteadiness due to flow nonuniformities upstream or downstream of the rotor. During vibration...

... vaporisation cavitation bubble growth mass transfer multiphase flow heat transfer cryogens Cavitation is a persistent problem for a wide range of machines, such as in internal flow devices due to both performance reduction and the ability of cavitation bubbles to cause tiny pits or crater...

... this phenomenon, often called after-boiling among engine manufacturers. The model structure includes thermodynamic equations to compute heat transfer as well as mass transfer equations to determine the vaporized mass of the coolant, which occurs in cylinder head passages and the vapor condensation within...

... and neutron-kinetic code systems. 21 07 2008 23 07 2008 02 10 2008 computational fluid dynamics fission reactor coolants fission reactor cooling mass transfer mechanical engineering computing natural convection rotational flow turbulence Density differences between...

...P. Lappas; R. L. Evans A simple two-zone mass transfer model was used to predict the mean squish velocity history at the rim of a conventional bowl-in-piston combustion chamber. The chamber’s geometry produces gas flow that converges radially inwards (“squish”) as TDC (top dead center...

... to higher temperatures at higher heating rates as a result of the competing effects of heat and mass transfer to the material. The results on the Arrhenius chemical kinetic parameters and heat of pyrolysis obtained from the thermal decomposition of the sample materials showed that different components...