Exhaust-Gas Dynamics Model for Identification Purposes

2003 ◽  
Author(s):  
Marzio Locatelli ◽  
Christopher H. Onder ◽  
Hans P. Geering
Keyword(s):  
Gas Dynamics ◽  
Exhaust Gas ◽  
Dynamics Model

Modernization of exhaust manifolds of DG882L diesel-generator for diesel locomotives

2020 ◽  
pp. 68-71
Author(s):  
Dmitriy Sergeevich Shestakov ◽  
◽  
Dmitriy Andreevich Lashmanov ◽  
Keyword(s):  
Cast Iron ◽  
Diesel Engine ◽  
Temperature Distribution ◽  
Gas Dynamics ◽  
Exhaust Gas ◽  
Exhaust Manifold ◽  
Diesel Generator

The paper considers a serial design of a collapsible exhaust manifold for pulse boosting system of 8DM-21EL2M diesel engine and it’s modernized variant made of cast iron. The authors present results of modeling of exhaust gas and coolant flows gas dynamics. They also show the temperature distribution over the manifold surface.

scholarly journals Symmetries of conservation laws

2005 ◽  
Vol 77 (91) ◽  
pp. 29-51
Author(s):  
Sanja Konjik
Keyword(s):  
Shock Waves ◽  
Conservation Laws ◽  
Gas Dynamics ◽  
Hyperbolic Conservation Laws ◽  
Strong Association ◽  
Group Analysis ◽  
Symmetry Groups ◽  
Dynamics Model ◽  
Hyperbolic Conservation ◽  
Systems Of Conservation Laws

We apply techniques of symmetry group analysis in solving two systems of conservation laws: a model of two strictly hyperbolic conservation laws and a zero pressure gas dynamics model, which both have no global solution, but whose solution consists of singular shock waves. We show that these shock waves are solutions in the sense of 1-strong association. Also, we compute all project able symmetry groups and show that they are 1-strongly associated, hence transform existing solutions in the sense of 1-strong association into other solutions.

scholarly journals Internal Combustion Engine Modeling Framework in Simulink: Gas Dynamics Modeling

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Bradley Thompson ◽  
Hwan-Sik Yoon
Keyword(s):  
Gas Dynamics ◽  
Computer Aided Design ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Simulation Software ◽  
Dynamics Model ◽  
Modeling Framework ◽  
Matlab Simulink ◽  
Engine Modeling

With advancements in computer-aided design, simulation of internal combustion engines has become a vital tool for product development and design innovation. Among the simulation software packages currently available, MATLAB/Simulink is widely used for automotive system simulations, but does not contain a comprehensive engine modeling toolbox. To leverage MATLAB/Simulink’s capabilities, a Simulink-based 1D flow engine modeling framework has been developed. The framework allows engine component blocks to be connected in a physically representative manner in the Simulink environment, reducing model build time. Each component block, derived from physical laws, interacts with other blocks according to block connection. In this Part 1 of series papers, a comprehensive gas dynamics model is presented and integrated in the engine modeling framework based on MATLAB/Simulink. Then, the gas dynamics model is validated with commercial engine simulation software by conducting a simple 1D flow simulation.

On supersonic plasma flow around an obstacle

2012 ◽  
Vol 79 (3) ◽  
pp. 315-319 ◽  
Author(s):  
J. E. ALLEN
Keyword(s):  
Plasma Flow ◽  
Gas Dynamics ◽  
Dynamics Model ◽  
Langmuir Probes ◽  
Particle In Cell ◽  
Free Region ◽  
Supersonic Plasma ◽  
Weak Discontinuities ◽  
Isothermal Gas ◽  
Mach Cones

AbstractSupersonic plasma flow around an object large compared with the Debye distance is treated using an isothermal gas dynamics model. The case of (initially) subsonic flow has been studied previously using this model, the motivation then being the use of Langmuir probes. In supersonic plasma flow Mach cones describing weak discontinuities rather than shock waves are predicted. A comparison has been made with particle-in-cell simulations carried out by Willis et al. (Willis, C. T. N., Allen, J. E., Coppins, M. and Bacharis, M. 2011 Phys. Rev. E, 84, 046410), where such Mach cones are observed. Other features cannot be explained by the isothermal gas dynamics model, these include the appearance, at high supersonic velocities, of an ion-free region downstream.

A multiple translational temperature gas dynamics model

1994 ◽  
Vol 6 (11) ◽  
pp. 3776-3786 ◽  
Author(s):  
Graham V. Candler ◽  
Sandeep Nijhawan ◽  
Deepak Bose ◽  
Iain D. Boyd
Keyword(s):  
Gas Dynamics ◽  
Dynamics Model ◽  
Translational Temperature
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