Accession Number:

ADA232136

Title:

Evaporation of a Thickened Agent Simulant from Oak and Hickory Leaves

Descriptive Note:

Final rept. Oct 1981-Jun 1989

Corporate Author:

CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUNDMD

Report Date:

1990-12-01

Pagination or Media Count:

452.0

Abstract:

This study identifies the physical parameters and determines the extent of their influence on the evaporation of the candidate thickened liquid agent simulant diethyl malonate deposited as droplets on oak and hickory leaves. Controlled evaporationpersistency experiments were conducted in a low-speed, open-circuit wind tunnel facility at a constant temperature of 60 F. In each test, vapor concentrations downstream from an area 4 ft by 1 ft contaminated by uniform-sized droplets 2 mm diameter and a contamination density of 30 gm2 were continuously monitored with a Miran IA gas analyzer. Two factorial experiments were performed according to a bi-level design of four variables. The four variables treated in this study included liquid viscosity 1001,000 centipoise, average wind speed 311 mph, leaf surface topbottom, and leaf type oakhickory in Experiment 1 and leaf conditionage in Experiment 2. An elaborate set of tables is provided the vapor concentration values downstream from the contaminated area, the residual droplet mass, the cumulative mass recovered as vapor, and the droplet evaporation rate as a function of time.

Subject Categories:

  • Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE