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| Title: | Performance evaluation of a fast mobility-based particle spectrometer for aircraft exhaust |
| Author (s): | Hagen, Donald Edward Lobo, Prem Whitefield, Philip D. Trueblood, Max B. Alofs, Darryl John Schmid, Otmar |
| Department/Lab Affiliations: | Chemistry Environmental Research Center Mechanical & Aerospace Engineering Physics |
| Keywords: | aerosol sizing instrument particulate matter emissions |
| Subject Terms: | Jet engines. |
| Issue Date: | 2009-05 |
| Publisher: | American Institute of Aeronautics and Astronautics AIAA |
| Citation: | Hagen, Donald E., Prem Lobo, Philip D. Whitefield, Max B. Trueblood, Darryl J. Alofs, and Otmar Schmid. “Performance Evaluation of a Fast Mobility-Based Particle Spectrometer for Aircraft Exhaust”, Journal of Propulsion and Power, Vol. 25, No. 3, (May 2009): 628-634. |
| Abstract: | The Cambustion DMS500, a novel aerosol sizing instrument with fast time resolution, was first employed to sample jet engine particulate matter emissions during Project APEX. This paper compares the performance of the DMS500 to that of traditional aerosol instruments for sampling jet engine exhaust aerosol under field conditions during this campaign. The observed geometric mean diameter with respect to the particle number (Dg) ranged from 15 to 45 nm, and with respect to the mass (third moment) distribution (DgM) from 21 to 112 nm, the geometric standard deviation (_g) ranged from 1.22 to 1.90 and the total number concentration (N) ranged from 6 _ 103 to 3:3 _ 105=cm3 (after dilution). On average, the Dg, DgM, _g, and N of the DMS500 size distributions differed by _9, _7, _1, and _30% from the reference values of the traditional instruments. Compared with the reference values, both Dg and _g of the DMS500 showed a small but statistically significant decrease with increasing particle size. Effects due to particle shape appeared to be the most likely explanation for the observed size-related trends. The 30% disagreement in concentration measurements is reasonable when the sensitivity of the 3022 condensation particle counter to pressure fluctuations encountered during measurements at the engine exhaust nozzle is taken into account. |
| Type: | Article - Journal text |
| In Title: | Journal of Propulsion and Power |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: archiving status unclear; Post-print: author cannot archive; FULL COPYRIGHT INFORMATION: |
| Publisher URL: | |
| Link to this page: |
| title | Performance evaluation of a fast mobility-based particle spectrometer for aircraft exhaust |
| contributor.author | Hagen, Donald Edward |
| contributor.author | Lobo, Prem |
| contributor.author | Whitefield, Philip D. |
| contributor.author | Trueblood, Max B. |
| contributor.author | Alofs, Darryl John |
| contributor.author | Schmid, Otmar |
| contributor.deptlab | Chemistry |
| contributor.deptlab | Environmental Research Center |
| contributor.deptlab | Mechanical & Aerospace Engineering |
| contributor.deptlab | Physics |
| subject | aerosol sizing instrument |
| subject | particulate matter emissions |
| subject.LCSH | Jet engines. |
| date.issued | 2009-05 |
| publisher | American Institute of Aeronautics and Astronautics AIAA |
| identifier.citation | Hagen, Donald E., Prem Lobo, Philip D. Whitefield, Max B. Trueblood, Darryl J. Alofs, and Otmar Schmid. “Performance Evaluation of a Fast Mobility-Based Particle Spectrometer for Aircraft Exhaust”, Journal of Propulsion and Power, Vol. 25, No. 3, (May 2009): 628-634. |
| identifier.pub.URI | |
| description.abstract | The Cambustion DMS500, a novel aerosol sizing instrument with fast time resolution, was first employed to sample jet engine particulate matter emissions during Project APEX. This paper compares the performance of the DMS500 to that of traditional aerosol instruments for sampling jet engine exhaust aerosol under field conditions during this campaign. The observed geometric mean diameter with respect to the particle number (Dg) ranged from 15 to 45 nm, and with respect to the mass (third moment) distribution (DgM) from 21 to 112 nm, the geometric standard deviation (_g) ranged from 1.22 to 1.90 and the total number concentration (N) ranged from 6 _ 103 to 3:3 _ 105=cm3 (after dilution). On average, the Dg, DgM, _g, and N of the DMS500 size distributions differed by _9, _7, _1, and _30% from the reference values of the traditional instruments. Compared with the reference values, both Dg and _g of the DMS500 showed a small but statistically significant decrease with increasing particle size. Effects due to particle shape appeared to be the most likely explanation for the observed size-related trends. The 30% disagreement in concentration measurements is reasonable when the sensitivity of the 3022 condensation particle counter to pressure fluctuations encountered during measurements at the engine exhaust nozzle is taken into account. |
| type | Article - Journal |
| type.DCMIType | text |
| relation.isPartOf | Journal of Propulsion and Power |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: archiving status unclear; Post-print: author cannot archive; |
| rights.URI | |
| identifier.persist.URI | |
| date.available | 2009-09-18T18:54:39Z |