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| 1 | Bifurcation in a 3-DOF Airfoil with Cubic Structural Nonlinearity显示文摘Limit cycle oscillations (LCOs) as well as nonlinear aeroelastic analysis of a 3-DOF aeroelastic airfoil motion with cubic restoring moments in the pitch degree of freedom are investigated.Aeroelastic equations of an airfoil with control surface in an incompressible potential flow are presented in the time domain.The harmonic balance (HB) method is utilized to calculate the LCO frequency and amplitude for the airfoil.Also the semi-analytical method has revealed the presence of stable and unstable limit cycles,along with stability reversal in the neighborhood of a Hopf bifurcation.The system response is determined by numerically integrating the governing equations using a standard Runge-Kutta algorithm and the obtained results are compared with the HB method.Also the results by the third order HB (HB3) method for control surface are consistent with the other numerical solution.Finally,by combining the numerical and the HB methods,types of bifurcation,be it supercritical,subcritical,or divergent flutter area are identified. | Saied IRANI Hamid SARRAFZADEH Mohammad Reza AMOOZGAR | 2011 | Chinese Journal of Aeronautics2011，24，3： | 4 |
| 2 | Fischer-Tropsch synthesis over ruthenium-promoted Co/Al_2O_3 catalyst with different reduction procedures显示文摘The effect of reduction procedure on catalyst properties, activity and products selectivity of ruthenium-promoted Co/γ-Al2O3 catalyst in Fischer-Tropsch synthesis (FTS) was investigated. Catalyst samples were reduced with different reduction gas compositions and passivated before being characterized by TPR and XRD techniques. Different activity and product selectivity analyses were also performed. These results showed that the catalyst dispersion, particle size, and the degree of reduction changed with different reduction gas compositions, which were resulted from the water partial pressures in reduction process that give varying degrees of interaction with the support. It has been suggested that the FTS activity of cobalt catalyst was directly dependent on the catalyst reducibility. A reduction gas with a molar ratio of H2/He = 1 was used to prevent the formation of Co-support compound during catalyst reduction. | Ali Karimi Ali Nakhaei Pour Farshad Torabi Behnam Hatami Ahmad Tavasoli Mohammad Reza Alaei Mohammad Irani | 2010 | Journal of Natural Gas Chemistry2010，19，5： | 1 |
| 3 | Comparative study on PVA/silica membrane functionalized with mercapto and amine groups for adsorption of Cu(II) from aqueous solutions显示文摘 | Mohammad Irani Ali Reza Keshtkar Mohammad Ali Moosavian | 2012 | Journal of the Taiwan Institute of Chemical Engineers2012，，： | 1 |
| 4 | Evolving neural network using real coded genetic algorithm for permeability estimation of the reservoir 显示文摘 | Rasoul Irani Reza Nasimi | 2011 | Expert Systems with Applications2011，38，： | 1 |
| 5 | Hydrocarbon production rates in Fischer-Tropsch synthesis over a Fe/Cu/La/Si catalyst显示文摘The detailed kinetics of Fischer-Tropsch synthesis over an industrial Fe/Cu/La/Si catalyst was studied in a continuous spinning basket reactor under the conditions relevant to industrial operations. Reaction rate equations were derived on the basis of Langmuir-HinshelwoodHougen-Watson type models for Fischer-Tropsch synthesis based on possible reactions sets originated from the carbide, enolic and combined enol/carbide mechanisms. Kinetic model candidates were evaluated by the global optimization of kinetic parameters, which were realized by first minimization of multi-response objective functions with conventional Levenberg-Marquardt method. It was found that an enolic mechanism based model could produce a good fit of the experimental data. The activation energy for paraffin formation is 95 kJ mol-1 which is smaller than that for olefin formation (121 kJ mol-1 ). | Ali Nakhaei Pour Farshad Riyahi Mohammad Reza Housaindokht Mohammad Irani Seyed Mehdi Kamali Shahri Behnam Hatami | 2013 | Journal of Energy Chemistry2013，22，1： | 1 |
| 6 | Computationally aware systems:Recommended features through a review of 188 definitions and its relevance to advanced simulation显示文摘In this paper,188 definitions of aware,awareness,conscious,and consciousness,classified in different categories including cognitive science,computation,medicine,neurology,and philosophy,are reviewed.Based on this systematic review,desirable features of computationally aware systems(CASs)are gleaned and reported.A discussion about the relevance of computational awareness to advanced simulation is also outlined. | Reza Irani Pouria Sharifian Monfared Mohammad Kazemifard Tuncer Oren | 2021 | International Journal of Modeling, Simulation, and Scientific Computing2021，12，1： | 0 |
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