The Mechanism Analysis of O Radical Effect on Ignition of Methane/Air Mixture

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.437.253 ◽

2013 ◽

Vol 437 ◽

pp. 253-256

Author(s):

Yong Li ◽

Huai Rong Shen

Keyword(s):

Sensitivity Analysis ◽

Path Analysis ◽

Physical Mechanism ◽

Reaction Path ◽

Ignition Time ◽

Numerical Results ◽

Mechanism Analysis

In order to show the physical mechanism of O radical on ignition of methane/air mixture, based on GRI-Mech3.0, the ignition were carried on by solving the mode of the closed reactors. It was found that the influence law on O radical effect on ignition of methane/air mixture. The numerical results indicate that the ignition time reduced about 94.7% by adding radicals of the 0.5% O. By using reaction path analysis and sensitivity analysis, the results have disciplinarian on the detailed kinetic enhancements of radicals on O radical on ignition of methane/air.

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Direct Differentiation Methods for the Design Sensitivity of Multibody Dynamic Systems

Volume 3: 22nd Design Automation Conference ◽

10.1115/96-detc/dac-1087 ◽

1996 ◽

Author(s):

Radu Serban ◽

Jeffrey S. Freeman

Keyword(s):

Sensitivity Analysis ◽

Dynamic Systems ◽

Design Sensitivity ◽

Differential Algebraic Equations ◽

Mechanism Analysis ◽

Algebraic Equations ◽

First Order ◽

Direct Differentiation ◽

Multibody Dynamic ◽

Standard Techniques

Abstract Methods for formulating the first-order design sensitivity of multibody systems by direct differentiation are presented. These types of systems, when formulated by Euler-Lagrange techniques, are representable using differential-algebraic equations (DAE). The sensitivity analysis methods presented also result in systems of DAE’s which can be solved using standard techniques. Problems with previous direct differentiation sensitivity analysis derivations are highlighted, since they do not result in valid systems of DAE’s. This is shown using the simple pendulum example, which can be analyzed in both ODE and DAE form. Finally, a slider-crank example is used to show application of the method to mechanism analysis.

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Reaction path analysis of the rate of unimolecular isomerization

The Journal of Chemical Physics ◽

10.1063/1.466208 ◽

1993 ◽

Vol 99 (12) ◽

pp. 9585-9590 ◽

Cited By ~ 8

Author(s):

Soonmin Jang ◽

Stuart A. Rice

Keyword(s):

Path Analysis ◽

Reaction Path

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MODELING KENYA’S DOMESTIC RADICALIZATION LIKE A DISEASE BY INCORPORATING EFFORTS OF CLERGIES, REHABILITATION CENTERS AND JUSTICE SYSTEM

Journal of Applied Science, Engineering and Technology for Development ◽

10.33803/jasetd.2017.2-1.5 ◽

2017 ◽

Keyword(s):

Sensitivity Analysis ◽

Legal System ◽

Justice System ◽

Deterministic Model ◽

Reproduction Number ◽

Equilibrium Points ◽

Intervention Strategy ◽

Numerical Results ◽

Rehabilitation Centers ◽

Analytical Results

This study presents a deterministic model for domestic radicalization process in Kenya and uses the model to assess the effect of efforts of good clergies, rehabilitation centers and legal system in lowering radicalization burden. The likelihood of other drivers of radicalization to individuals who are not religious fanatics was considered. The possibility of individuals in rehabilitated subclass quitting back to violent class was considered. The equilibrium points were computed, their stabilities investigated and important thresholds determining the progression of the radicalization computed. The sensitivity analysis of control reproduction number indicates that high intervention rates hold is likely to reduce the radicalization burden. The results indicate that use of good clergies to assist individuals’ radicalized but peaceful, to recover is the best intervention strategy. Estimated numerical results and simulations were carried to confirm analytical results.

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Numerical Modelling and Simulation of the In-Plane Response of a Three-Storey Masonry-Infilled RC Frame Retrofitted with TRM

Advances in Civil Engineering ◽

10.1155/2020/6279049 ◽

2020 ◽

Vol 2020 ◽

pp. 1-19

Author(s):

Christiana A. Filippou ◽

Nicholas C. Kyriakides ◽

Christis Z. Chrysostomou

Keyword(s):

Sensitivity Analysis ◽

Finite Element ◽

Numerical Model ◽

Parametric Study ◽

Shear Capacity ◽

Numerical Results ◽

Rc Frame ◽

Masonry Infill ◽

Infilled Frame ◽

Gap Opening

A numerical study was conducted to investigate the in-plane behavior of a masonry-infilled reinforced concrete (RC) frame retrofitted with textile-reinforced mortar (TRM). A two-dimensional finite element model was developed using DIANA finite element analysis (FEA) software to simulate the 2 : 3 scaled three-storey masonry-infilled RC frame retrofitted with TRM that was studied experimentally in the past. The three-storey structure used in the test was with a nonseismic design and detailing, and was subjected to in-plane displacement-control cyclic loading. The current study evaluates the capabilities of a representative numerical model to simulate the results of the experimental test, and after the calibration of the numerical model sensitivity analysis and parametric study were performed. In order to create an accurate numerical model, suitable constitutive models, based on the smeared crack approach, were used to characterize the nonlinear response of concrete, masonry infill, and TRM. The calibration of the models was based on the experimental results or inverse fitting based on optimizing the simulation of the response. The numerical model proved capable of simulating the in-plane behavior of the retrofitted masonry-infilled RC frame with good accuracy in terms of initial stiffness, and its deterioration, shear capacity, and cracking patterns. The calibrated model was then used to perform sensitivity analysis in order to examine the influence of infill-frame interface properties (tangential and normal stiffness) on the behavior of the retrofitted infilled frame. The numerical results showed that the gap opening is influenced significantly by the stiffness of the interface. In addition, a parametric study was performed in order to evaluate the importance of the full-bond condition between the TRM and the masonry-infilled RC frame. The numerical results indicate that the composite action between the TRM and the masonry-infilled RC frame improves the global stiffness and lateral resistance of the infilled frame, and it reduces the gap opening between the masonry infill and the RC frame.

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