{"id":286704,"date":"2023-06-01T11:01:58","date_gmt":"2023-06-01T11:01:58","guid":{"rendered":"\/forum\/forums\/topic\/flame-comparison-1-bar-10-bar-ch4-combustion\/"},"modified":"2023-06-01T11:01:58","modified_gmt":"2023-06-01T11:01:58","slug":"flame-comparison-1-bar-10-bar-ch4-combustion","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/flame-comparison-1-bar-10-bar-ch4-combustion\/","title":{"rendered":"Flame comparison 1 bar &amp; 10 bar CH4 combustion"},"content":{"rendered":"<p>Hello im simulating methane combustion partially premixed (chemical equilibrium). Im analyzing the effect of diffrent pressures. One simulation is computed with 1 bar and the other one with 10 bar (mass fractions are the same). Boundary conditions are the same in bouth simulations.<br \/>According the literature the flame should be shorter under higher pressure, because the flame spread is accelarted. <br \/>Im getting the oposite&#8230;.the flame under pressure is longer than the one under atmosperic pressure.<br \/>Why? ans idea?<br \/><img decoding=\"async\" title=\"10 bar\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/01-06-2023-1685617105-mceclip1.png\">Simulation (10 bar)<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/01-06-2023-1685617241-mceclip2.png\" width=\"348\" height=\"403\">Simulation (1 bar)<\/p>\n<p>Heat release rate is plotted.<\/p>\n<p>Thanks<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-286704","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello im simulating methane combustion partially premixed (chemical equilibrium). 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