Coupled coagulation of aerosol particles at large Knudsen and small Peclet numbers

<正> At large Knudsen number, the medium can be approximated by a molecular system, and the equation for the pair-distribution function is then established. When the Peclet number is small, the matched asymptotic expansions of singular perturbation theory is used to solve the equation o...

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Veröffentlicht in:	自然科学进展：英文版 2001 (2), p.16-21
Hauptverfasser:	张连众, 温景嵩
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Sprache:	eng
Schlagworte:	Knudsen number aerosol number Peclet particle singular perturbation coagulation rate
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description	<正> At large Knudsen number, the medium can be approximated by a molecular system, and the equation for the pair-distribution function is then established. When the Peclet number is small, the matched asymptotic expansions of singular perturbation theory is used to solve the equation of the pair-distribution function. A third-order expansion for the dimensionless coagulation rate (Nusselt number) is thus obtained. Comparison of numeric results of the coagulation rate in a molecular system and that in a continuous medium has shown that the coagulation rate in a molecular system is much larger than that in a continuous medium.
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When the Peclet number is small, the matched asymptotic expansions of singular perturbation theory is used to solve the equation of the pair-distribution function. A third-order expansion for the dimensionless coagulation rate (Nusselt number) is thus obtained. Comparison of numeric results of the coagulation rate in a molecular system and that in a continuous medium has shown that the coagulation rate in a molecular system is much larger than that in a continuous medium.</description><identifier>ISSN: 1002-0071</identifier><language>eng</language><subject>Knudsen ; number;aerosol ; number;Peclet ; particle;singular ; perturbation;coagulation ; rate</subject><ispartof>自然科学进展：英文版, 2001 (2), p.16-21</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85882X/85882X.jpg</thumbnail><link.rule.ids>314,776,780,4010</link.rule.ids></links><search><creatorcontrib>张连众;温景嵩</creatorcontrib><title>Coupled coagulation of aerosol particles at large Knudsen and small Peclet numbers</title><title>自然科学进展：英文版</title><addtitle>Progress in Natural Science</addtitle><description>&lt;正&gt; At large Knudsen number, the medium can be approximated by a molecular system, and the equation for the pair-distribution function is then established. When the Peclet number is small, the matched asymptotic expansions of singular perturbation theory is used to solve the equation of the pair-distribution function. A third-order expansion for the dimensionless coagulation rate (Nusselt number) is thus obtained. Comparison of numeric results of the coagulation rate in a molecular system and that in a continuous medium has shown that the coagulation rate in a molecular system is much larger than that in a continuous medium.</description><subject>Knudsen</subject><subject>number;aerosol</subject><subject>number;Peclet</subject><subject>particle;singular</subject><subject>perturbation;coagulation</subject><subject>rate</subject><issn>1002-0071</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqVirsKwjAUQDMoWB__cHcp3FZt7FwUwUXEvVzbNEbSpOYx-PdW8AdczjnDmbAkQ8xTRJ7N2Nz7J36z4Am7VjYOWrTQWJJRU1DWgO2AhLPeahjIBdVo4YECaHJSwNnE1gsDZFrwPWkNFzEeAUzs78L5JZt2pL1Y_bxg6-PhVp3S5mGNfCkj68Gpnty7LkrkO77dlzlihiPyzX_3B2HUQg0</recordid><startdate>2001</startdate><enddate>2001</enddate><creator>张连众;温景嵩</creator><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope></search><sort><creationdate>2001</creationdate><title>Coupled coagulation of aerosol particles at large Knudsen and small Peclet numbers</title><author>张连众;温景嵩</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-chongqing_primary_6907574892001020023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Knudsen</topic><topic>number;aerosol</topic><topic>number;Peclet</topic><topic>particle;singular</topic><topic>perturbation;coagulation</topic><topic>rate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>张连众;温景嵩</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><jtitle>自然科学进展：英文版</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>张连众;温景嵩</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coupled coagulation of aerosol particles at large Knudsen and small Peclet numbers</atitle><jtitle>自然科学进展：英文版</jtitle><addtitle>Progress in Natural Science</addtitle><date>2001</date><risdate>2001</risdate><issue>2</issue><spage>16</spage><epage>21</epage><pages>16-21</pages><issn>1002-0071</issn><abstract>&lt;正&gt; At large Knudsen number, the medium can be approximated by a molecular system, and the equation for the pair-distribution function is then established. When the Peclet number is small, the matched asymptotic expansions of singular perturbation theory is used to solve the equation of the pair-distribution function. A third-order expansion for the dimensionless coagulation rate (Nusselt number) is thus obtained. Comparison of numeric results of the coagulation rate in a molecular system and that in a continuous medium has shown that the coagulation rate in a molecular system is much larger than that in a continuous medium.</abstract></addata></record>
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issn	1002-0071
language	eng
recordid	cdi_chongqing_primary_690757489200102002
source	Alma/SFX Local Collection
subjects	Knudsen number aerosol number Peclet particle singular perturbation coagulation rate
title	Coupled coagulation of aerosol particles at large Knudsen and small Peclet numbers
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