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Code Manual for CONTAIN 2.0 - Federation of American Scientists

Code Manual for CONTAIN 2.0 - Federation of American Scientists

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The user may choose either <strong>of</strong> two aerosol scrubbing models. The keyword SCRUB specifies the<br />

aerosol scrubbing model from the VANESA code. [Pow86] The keyword SPARC specifies the<br />

SPARC scrubbing model. [Owc85a] The SCRUB model is the model by default provided aerosols<br />

are present.<br />

The following keywords and values may be used in conjunction with the SCRUB model from the<br />

VANESA code (see Reference Pow86):<br />

SCRUB the keyword <strong>for</strong> specifying the VANESA aerosol scrubbing model.<br />

BSIZI the initial bubble diameter. Default = 0.01. (m)<br />

= bsizi<br />

VROVR the ratio <strong>of</strong> bubble gas circulation velocity to computed rise velocity. Default<br />

= vrovr<br />

= 1.<br />

The following keywords and values may be used in conjunction with the SPARC scrubbing model<br />

(see Reference 0wc85a):<br />

SPARC the keyword <strong>for</strong> specifying the SPARC aerosol scrubbing model.<br />

BSIZI the initial bubble diameter. This keyword replaces DIAM <strong>of</strong> the stand-alone<br />

= bsizi version <strong>of</strong> SPARC. Default = 0.01. (m)<br />

RATIO the ratio <strong>of</strong> the major axis to the minor axis <strong>of</strong> a symmetric oblate spheroid<br />

= ratio bubble. The ratio is taken to be greater than or equal to 1. If a value less than<br />

1 is input, its inverse is automatically taken. Default= 1.<br />

NRISE the number <strong>of</strong> integration zones used <strong>for</strong> bubble rise in the scrubbing region.<br />

= nrise Values ranging from 10 to 1000 are suggested <strong>for</strong> accuracy. Default= 10.<br />

14.2.5 Aerosol Options<br />

The global aerosol characteristics are specified in the following input block. Note that aerosol initial<br />

conditions and sources are given on a cell-by-cell basis and are discussed in Section 14.3.1.8.<br />

***** ***** ***** ***** ***** ************************************************<br />

AEROSOL<br />

Rev O<br />

[NEWCOF=newc<strong>of</strong>J [DIAMl=diaml] [DIAM2=diarn2] [TGAS l=tgasl]<br />

[TGAS2=tgas2] [PGASl=pgasl] [PGAS2=pgas2] [TURBDS=turbds]<br />

[COLEFF=coleffl [DENSTY=rho] [CHI=chi] [GAMMA=gamma]<br />

[DELDIF=deldifl [TKGOP=tkgop] [NOCOND] mOEVAP] mOCONEVA [(ncls)]]<br />

[RELTOL=reltol] [ABSTOL=abstol]<br />

[TRAPOVFL] [TRAPUNFL]<br />

[AERTIM=ntb<br />

14-33 6/30/97

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