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Liftoff of Propane - Air Diffusion Flames By Axis Symmetric Co-flow Air Injection

Scientific Contributions Oil and Gas · Vol. 32 No. 3 (2022) · hlm. 214–221

DOI
10.29017/SCOG.32.3.853
ISSN
2541-0520, 2089-3361
Terbit
2022-03-17
Penerbit
Testing Center for Oil and Gas LEMIGAS
Bahasa
eng
Lisensi
creativecommons.org/licenses/by/4.0

Abstrak

Combustion of gas with diffusion system is widely used in many residential gas appliances like stove, engine furnaces and industrial furnaces. Phenomenon of lifted flame is often happened at diffusion flame where the stream of fuel and air into combustor flow separately. Hence the combustion process needs time so that mixing of air and fuel reach the condition ready for burnt. This condition make the burner tip protected from high thermal load and more safe to operate. In this paper, propane was ejected into quiescence air through nozzle having 1.8 mm holes diameter. Fuel flow rate was increased until liftoff conditions exceed; hereinafter flow rate of fuel was made constant at 69 ml/s and air was ejected around of fuel with axis symmetric flow. Liftoff behavior of diffusion flames was investigated for various air flow rate: 17.9 ml/s – 89.9 ml/s. Lifted distance decreased from 130 mm to 90 mm when air was injected with flow rate of 19.1 ml/s, however, it increased to 100 mm when air flow rate increased to 35.9 ml/s. Cold-flow simulation showed the moderate air flow rate give a faster density degradation at axial line compared to larger air flow rate. It means moderate flow rate of air support a better air-fuel mixing than faster one.

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  • Kementerian Energi dan Sumber Daya Mineral
  • University of Indonesia
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Rekan penulisOrganisasiArtikel bersama
Riesta AnggaraniKementerian Energi dan Sumber Daya Mineral3
Cahyo Setyo WibowoKementerian Energi dan Sumber Daya Mineral3
Lies AisyahAfiliasi tidak diketahui1
I Nym Guni RidhantaAfiliasi tidak diketahui1
R DimitriAfiliasi tidak diketahui1
Maymuchar MaymucharAfiliasi tidak diketahui1

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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.lemigas.esdm.go.id/index.php/SCOG/oai, pertama di-harvest 10 Nov 2026, terakhir terlihat 10 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en">Liftoff of Propane - Air Diffusion Flames By Axis Symmetric Co-flow Air Injection</dc:title>
	<dc:creator xml:lang="en">Dhiputra, I Made K</dc:creator>
	<dc:creator xml:lang="en">Harinaldi, Harinaldi</dc:creator>
	<dc:creator xml:lang="en">Caturwati, NK</dc:creator>
	<dc:creator xml:lang="en">Rulianto, Dimitri</dc:creator>
	<dc:subject xml:lang="en">diffusion</dc:subject>
	<dc:subject xml:lang="en">combustion</dc:subject>
	<dc:subject xml:lang="en">lifted-flame</dc:subject>
	<dc:subject xml:lang="en">lifted-distance</dc:subject>
	<dc:description xml:lang="en">Combustion of gas with diffusion system is widely used in many residential gas appliances like stove, engine furnaces and industrial furnaces. Phenomenon of lifted flame is often happened at diffusion flame where the stream of fuel and air into combustor flow separately. Hence the combustion process needs time so that mixing of air and fuel reach the condition ready for burnt. This condition make the burner tip protected from high thermal load and more safe to operate. In this paper, propane was ejected into quiescence air through nozzle having 1.8 mm holes diameter. Fuel flow rate was increased until liftoff conditions exceed; hereinafter flow rate of fuel was made constant at 69 ml/s and air was ejected around of fuel with axis symmetric flow. Liftoff behavior of diffusion flames was investigated for various air flow rate: 17.9 ml/s – 89.9 ml/s. Lifted distance decreased from 130 mm to 90 mm when air was injected with flow rate of 19.1 ml/s, however, it increased to 100 mm when air flow rate increased to 35.9 ml/s. Cold-flow simulation showed the moderate air flow rate give a faster density degradation at axial line compared to larger air flow rate. It means moderate flow rate of air support a better air-fuel mixing than faster one.</dc:description>
	<dc:publisher xml:lang="en">Testing Center for Oil and Gas LEMIGAS</dc:publisher>
	<dc:date>2022-03-17</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.lemigas.esdm.go.id/index.php/SCOG/article/view/853</dc:identifier>
	<dc:identifier>10.29017/SCOG.32.3.853</dc:identifier>
	<dc:source xml:lang="en">Scientific Contributions Oil and Gas; Vol. 32 No. 3 (2009); 214-221</dc:source>
	<dc:source xml:lang="id">Scientific Contributions Oil and Gas; Vol 32 No 3 (2009); 214-221</dc:source>
	<dc:source>2541-0520</dc:source>
	<dc:source>2089-3361</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.lemigas.esdm.go.id/index.php/SCOG/article/view/853/638</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 1970 SCIENTIFIC CONTRIBUTIONS OIL AND GAS (SCOG)</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by/4.0</dc:rights>
</oai_dc:dc>