In order to evaluate transport properties in turbulent premixed flames, a propagating turbulent premixed flame in an incoming homogeneous isotropic turbulence is directly simulated assuming a single-step irreversible Arrhenius-type reaction. To investigate the production of turbulent kinetic energy in the flame region, Favre averaged transport equation of turbulent kinetic energy along streamwi...

An approximate formula for the frequency of oscillations is theoretically derived for skeleton models for electrochemical systems exhibiting negative differential resistance (NDR) under conditions close to supercritical Hopf bifurcation points. The theoretically predicted omega infinity (k/R)1/2 relationship (where R is the series resistance of the cell and k is the rate constant of the charge ...

Mechanical activation in mechanical removal of GaN using diamond tip and mechanochemical Al2O3 are described by the Archard equation mechanically assisted Arrhenius-type kinetic model, respectively. Evident material-removal under elastic contact occurs with assistance interfacial reactions. By analyzing reactions model Hertzian mechanics, critical volume barrier determined semiquantitatively. T...

A mixed potential model (MPM) comprising the Point Defect Model (PDM) and Generalized Butler Volmer Equation (GBVE) was successfully developed to study passivity of HDSS 2707. The results show that dominant point defect within passive film is Min+, thereby rendering n-type semiconductor behavior barrier layer. anodic current independent formation whereas it increases with increasing temperature...

The deformation behavior and the constitutive description of materials are important in design numerical simulation manufacturing processes. In this work, rheological two quenchable boron steels was derived range interest for Press Hardening (PH) process. For study, following steps were performed: (i) Design specimen geometry adopted during hot tensile tests Gleeble®3180 physical simulator. (ii...

In the present research, synthesis of butyl oleate ester from oleic acid and butanol using loofa-immobilized Rhizopus oryzae as a whole cell biocatalyst (LIC) was studied in which hexane was used as the hydrophobic solvent. Decrease of mass transfer limitations as result of the interface formation between the two immiscible substrates, positively affected on the reaction progress (87% as the es...

In this paper, by means of Advanced Rheometric Expanded System (ARES), oscillatory and steady shear behavior of binary mixtures of a quaternary ammonium based ionic liquid [Me3NC2H4OH][Zn2Cl5] with ethanol (EtOH) were determined at 25°C and 25-50°C, respectively. The effects of shear rate, temperature and concentration on viscosity were elucidated sufficiently. It was found that the solutions s...