Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity
Reduced-gravity experiments were performed on combustion of droplets composed of n-heptane mixed with methanol or ethanol. The initial alcohol mass fraction in a droplet was 0% (pure heptane) or 5%. The experiments were performed at 0.1 MPa and 25°C with air or with ambients of oxygen and helium wit...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Combustion |
| Online Access: | http://dx.doi.org/10.1155/2013/154202 |
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| author | I. Aharon V. K. Tam B. D. Shaw |
| author_facet | I. Aharon V. K. Tam B. D. Shaw |
| author_sort | I. Aharon |
| collection | DOAJ |
| description | Reduced-gravity experiments were performed on combustion of droplets composed of n-heptane mixed with methanol or ethanol. The initial alcohol mass fraction in a droplet was 0% (pure heptane) or 5%. The experiments were performed at 0.1 MPa and 25°C with air or with ambients of oxygen and helium with oxygen mole fractions of 0.3 or 0.4. Initial droplet diameters were in the range 0.67 mm to 0.92 mm. After considering measurement uncertainties, burning rates decreased appreciably as the initial droplet diameter increased for combustion in air but not for combustion in the oxygen/helium environments. It was also found that addition of either methanol or ethanol did not influence burning rates appreciably and that burning rates were larger for the oxygen/helium environments than for air if initial droplet diameter dependences were accounted for. |
| format | Article |
| id | doaj-art-c0658b56853840b8a136d2e114fc95cd |
| institution | DOAJ |
| issn | 2090-1968 2090-1976 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Combustion |
| spelling | doaj-art-c0658b56853840b8a136d2e114fc95cd2025-08-20T03:23:26ZengWileyJournal of Combustion2090-19682090-19762013-01-01201310.1155/2013/154202154202Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced GravityI. Aharon0V. K. Tam1B. D. Shaw2Mechanical and Aerospace Engineering Department, University of California, Davis, CA 95616, USAMechanical and Aerospace Engineering Department, University of California, Davis, CA 95616, USAMechanical and Aerospace Engineering Department, University of California, Davis, CA 95616, USAReduced-gravity experiments were performed on combustion of droplets composed of n-heptane mixed with methanol or ethanol. The initial alcohol mass fraction in a droplet was 0% (pure heptane) or 5%. The experiments were performed at 0.1 MPa and 25°C with air or with ambients of oxygen and helium with oxygen mole fractions of 0.3 or 0.4. Initial droplet diameters were in the range 0.67 mm to 0.92 mm. After considering measurement uncertainties, burning rates decreased appreciably as the initial droplet diameter increased for combustion in air but not for combustion in the oxygen/helium environments. It was also found that addition of either methanol or ethanol did not influence burning rates appreciably and that burning rates were larger for the oxygen/helium environments than for air if initial droplet diameter dependences were accounted for.http://dx.doi.org/10.1155/2013/154202 |
| spellingShingle | I. Aharon V. K. Tam B. D. Shaw Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity Journal of Combustion |
| title | Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity |
| title_full | Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity |
| title_fullStr | Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity |
| title_full_unstemmed | Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity |
| title_short | Combustion of Submillimeter Heptane/Methanol and Heptane/Ethanol Droplets in Reduced Gravity |
| title_sort | combustion of submillimeter heptane methanol and heptane ethanol droplets in reduced gravity |
| url | http://dx.doi.org/10.1155/2013/154202 |
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