Detail publikace

# Theoretical Analysis of the Influence of Diffusion in Free Jet of Hot Gas Mixture

Originální název

Theoretical Analysis of the Influence of Diffusion in Free Jet of Hot Gas Mixture

Anglický název

Theoretical Analysis of the Influence of Diffusion in Free Jet of Hot Gas Mixture

Jazyk

en

Originální abstrakt

The theoretical analysis of the influence of diffusion on the distribution of mass fractions in free jet of hot gas mixture is based on the vector form of the continuity equation, including the diffusion member. Measured and computed quantities at the output of the arc heater (temperature profile, composition, thermodynamic and transport properties of the used gas mixture) are used as the initial conditions. The influence of diffusion is analyzed using the measured temperature and velocity fields in the cross-sections of the jet along the z-axis. The approximation of radial dependencies of temperature and velocity by Gaussian function makes possible the integration in radial direction. Consequently, the two-dimensional problem in cylindrical co-ordinates can be transformed into the one-dimensional one. Solving the complete continuity equation, the relations for the distribution of mass fractions can be derived, including the components normally present in the surrounding environment (argon and water vapour in air).

Anglický abstrakt

The theoretical analysis of the influence of diffusion on the distribution of mass fractions in free jet of hot gas mixture is based on the vector form of the continuity equation, including the diffusion member. Measured and computed quantities at the output of the arc heater (temperature profile, composition, thermodynamic and transport properties of the used gas mixture) are used as the initial conditions. The influence of diffusion is analyzed using the measured temperature and velocity fields in the cross-sections of the jet along the z-axis. The approximation of radial dependencies of temperature and velocity by Gaussian function makes possible the integration in radial direction. Consequently, the two-dimensional problem in cylindrical co-ordinates can be transformed into the one-dimensional one. Solving the complete continuity equation, the relations for the distribution of mass fractions can be derived, including the components normally present in the surrounding environment (argon and water vapour in air).

BibTex

``````
@misc{BUT59959,
author="Jan {Gregor} and Ivana {Jakubová} and Josef {Šenk}",
title="Theoretical Analysis of the Influence of Diffusion in Free Jet of Hot Gas Mixture",
annote="The theoretical analysis of the influence of diffusion on the distribution of mass fractions in free jet of hot gas mixture is based on the vector form of the continuity equation, including the diffusion member. Measured and computed quantities at the output of the arc heater (temperature profile, composition, thermodynamic and transport properties of the used gas mixture) are used as the initial conditions. The influence of diffusion is analyzed using the measured temperature and velocity fields in the cross-sections of the jet along the z-axis. The approximation of radial dependencies of temperature and velocity by Gaussian function makes possible the integration in radial direction. Consequently, the two-dimensional problem in cylindrical co-ordinates can be transformed into the one-dimensional one. Solving the complete continuity equation, the relations for the distribution of mass fractions can be derived, including the components normally present in the surrounding environment (argon and water vapour in air).",
address="Organizing Comittee SPPT21 and FE CTU, Prague",
chapter="59959",
institution="Organizing Comittee SPPT21 and FE CTU, Prague",
year="2004",
month="june",
pages="80",
publisher="Organizing Comittee SPPT21 and FE CTU, Prague",
type="abstract"
}``````