VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University333810.18287/2541-7533-2016-15-4-224-234UnknownDependence of methane laminar flame propagation speed on the pressure and initial temperatureLukachevS. V.<p><span lang="EN-US">Doctor of Science (Engineering), Professor<br />Head of the Department of Thermal Engineering and Thermal Engines</span></p>lucachev@ssau.ruMatveevS. G.<p><span lang="EN-US">Candidate of Science (Engineering)<br />Associate Professor of the Department of Thermal Engineering and Thermal Engines</span></p>pfu@ssau.ruZubrilinI. A.<p><span lang="EN-US">junior researcher</span></p>zubrilin416@mail.ruSigidaevA. V.<p><span lang="EN-US">graduate student</span></p>tophado787@yandex.ruSamara National Research University311220161542242341002201710022017Copyright © 2017, VESTNIK of Samara University. Aerospace and Mechanical Engineering2017<p>The paper presents the results that allowed obtaining the dependence of laminar flame propagation speed <em>Sl</em> on the equivalence ratio for a wide range of pressures and temperatures during methane combustion. A literature review was carried out to summarize the experimental data on the measurement of the <em>Sl</em>. The <em>Sl</em> was calculated using a kinetic mechanism GRI 3.0 within the required pressure and temperature range. The calculation results were generalized in the MATLAB software product to verify the <em>Sl</em> power dependencies on pressure and initial temperature. The results of calculation on the basis of the obtained approximating dependence were compared with the experimental data and results obtained by other authors. It was found that the exponents of power for the dependency on pressure and temperature are described not by constants or linear relations, but by second-degree equations on the fuel-air ratio. 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