DOI: 10.1016/j.atmosenv.2020.117539
论文题名: Britter and McQuaid (B&M) 1988 workbook nomograms for dense gas modeling applied to the Jack Rabbit II chlorine release trials
作者: Hanna S.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 232 语种: 英语
英文关键词: Chlorine
; Thermodynamics
; Chlorine release
; Dense gas
; Dense gas dispersions
; Instantaneous release
; Maximum concentrations
; Multi model
; Two phase
; Nomograms
; chlorine
; chlorine
; concentration (composition)
; gas
; numerical model
; thermodynamics
; ambient air
; Article
; cloud
; concentration (parameter)
; density
; environmental temperature
; field experiment
; gas
; geometry
; intermethod comparison
; mathematical model
; maximum concentration
; nomogram
; particle size
; prediction
; priority journal
; relative density
; thermodynamics
; volume
; wind speed
; Lepus
学科: Britter and McQuaid workbook
; Chlorine field experiment
; Dense gas dispersion
; Jack Rabbit II
; Model evaluation
中文摘要: The Britter and McQuaid (B&M) 1988 Workbook for Dense Gas Modeling uses principles of basic physics and thermodynamics to develop simplified nomograms for calculating dense gas dispersion, involving dimensionless combinations of the fundamental variables and parameters. There is one nomogram for instantaneous releases, and another for continuous releases. The B&M nomograms were applied to the three Jack Rabbit II (JR II) chlorine release trials being used for the multi-model comparison described in other papers in this special issue. The intent was to use the B&M model as a baseline against which other, more sophisticated models, could be compared. In any model applied to the JR II trials, it is important to properly initialize the cloud characteristics (geometry, density, etc.). The B&M handbook has a simple basic thermodynamics method to calculate the initial size and density of a cloud released as a two-phase pure mixture. It is shown that the B&M nomograms’ predictions of arc maximum concentration (arc max C) for JR II trials 1, 6, and 7 have skill about in the middle of the group of 17 models that are being compared. The B&M predictions are relatively unbiased for Trials 6 and 7 (which has the largest arc max C), but overpredict by a factor of 2 or 3 for Trial 1. It is concluded that the B&M nomograms are conservative and are adequate for first-cut estimates of maximum concentrations following large scale dense gas releases. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160312
Appears in Collections: 气候变化与战略
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作者单位: Hanna Consultants, 7 Crescent Ave, Kennebunkport, ME 04046, United States
Recommended Citation:
Hanna S.. Britter and McQuaid (B&M) 1988 workbook nomograms for dense gas modeling applied to the Jack Rabbit II chlorine release trials[J]. Atmospheric Environment,2020-01-01,232