English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The understanding of physical and chemical processes occurring in many applications in sciences and engineering is importantto ensure stability and efficiency of their performance. Examples are the combustion process in direct-injection engines,gas turbine combustors, and liquid rocket propulsion systems. The objective of this paper is the numerical investigation oflaminar methane/air and methane/oxygen flames where different mixtures of nitrogen and oxygen in the oxidizer stream are studied.Moreover, liquid oxygen (LOX) spray flames with carrier gas methane directed against a methane stream are investigated inthe counterflow configuration. These structures may be used in (spray) flamelet library or flamelet generated manifold computationsof turbulent combustion. The mathematical model is based on two-dimensional equations which are transferred into one-dimensionalequations using a similarity transformation. The numerical simulation concerns the axisymmetric configuration with an adaptivenumerical grid for the gas phase. Detailed models of all relevant processes are employed; in particular, a detailed chemicalreaction mechanism is used which comprises 35 species including C 2  involving 294 elementary reactions. The thermodynamic data for CH 4  and O 2  below 300K are implemented for normal and elevated pressures. For the CH 4 /air and an oxygenated flame, the present results are compared with results from literature. The CH 4 /O 2  flame is studied for elevated pressures up to 2MPa. Extinction conditions are evaluated for use in turbulent flamelet computations.It is shown that oxygen dilution, pressure, and strain rate have a pronounced effect on flame structure. The use of liquidcompared to gaseous oxygen strongly affects flame structure.

zeitschrift für physikalische chemie

Structures of Laminar Methane/Nitrogen/Oxygen, Methane/Oxygen and Methane/Liquid Oxygen Counterflow Flames for Cryogenic Conditions         and Elevated Pressures