{"id":311893,"date":"2023-10-17T17:38:11","date_gmt":"2023-10-17T17:38:11","guid":{"rendered":"\/forum\/forums\/reply\/311893\/"},"modified":"2023-10-17T17:38:11","modified_gmt":"2023-10-17T17:38:11","slug":"311893","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/311893\/","title":{"rendered":"Reply To: A nheptane+ammonia+hydrogen engine simulation in ANSYS FORTE"},"content":{"rendered":"<p>&lt;p&gt;Hi judy!&lt;\/p&gt;&lt;p&gt;Thanks for your reply!&lt;\/p&gt;&lt;p&gt;The crank angle for simulation i&#8217;ve set from -165 to 125. This interval is the time from the intake valve closing to the exhaust valve opening. But the calculation stopped at 5 grad. And i I tried different gas ratios, the calculation can only be completed when the proportion of hydrogen is less than 4%.When it is higher than 4%, after the calculation reaches the piston TDC, it will display: the flame in the cylinder is completely extinguished, and then the software stops calculation. Then the calculation failure is displayed in the HUD.&lt;\/p&gt;&lt;p&gt;I want to try, even if the flame goes out, the piston will continue to run due to inertia. Is there any way to complete the calculation without considering the combustion in the cylinder?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-311893","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi judy!Thanks for your reply!The crank angle for simulation i&#039;ve set from -165 to 125. This interval is the time from the intake valve closing to the exhaust valve opening. But the calculation stopped at 5 grad. And i I tried different gas ratios, the calculation can only be completed when the proportion of hydrogen\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/311893\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: A nheptane+ammonia+hydrogen engine simulation in ANSYS FORTE | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi judy!Thanks for your reply!The crank angle for simulation i&#039;ve set from -165 to 125. This interval is the time from the intake valve closing to the exhaust valve opening. But the calculation stopped at 5 grad. And i I tried different gas ratios, the calculation can only be completed when the proportion of hydrogen\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/311893\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-10-17T17:38:11+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-10-17T17:38:11+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: A nheptane+ammonia+hydrogen engine simulation in ANSYS FORTE | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi judy!Thanks for your reply!The crank angle for simulation i&#039;ve set from -165 to 125. This interval is the time from the intake valve closing to the exhaust valve opening. But the calculation stopped at 5 grad. 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This interval is the time from the intake valve closing to the exhaust valve opening. But the calculation stopped at 5 grad. 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