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Abstract:
An annual review is presented of a research program concerned with studying the filter/separator phenomena. The study consisted of reviewing published information, determining physical properties of jet fuels, performing electrokinetic experiments, and studying the coalescence of drops on single fibers and in packed fiber beds. The literature search revealed little new information about the coalescence of emulsions in fiber beds. No accepted theory exists on the mechanism of the coalescence of micron-size droplets in the passage of an emulsion through a fiber bed. An exploratory study was made of the generation of streaming current by JP-5 fuel flowing through fiber beds. The sign and magnitude of the current is dependent upon the type of fiber, fuel conductivity, type of fuel additives and the physical property of the fiber bed. A photographic technique was used to measure the coalescence and water droplet growth rates on various types of single fibers placed in a flowing JP-5-water emulsion. The drops appeared to grow by acquiring free water from the main stream rather than from the surface of the fiber. Coalescence studies with glass fibers showed that for a specific fiber diameter there appears to be an optimum bed thickness for obtaining complete coalescence and a reasonably low pressure drop.
| Description: |
Annual summary rept. 20 Apr 66-19 Apr 67 |
| Pages: |
122 |
| Report Date: |
MAY 1967 |
| Contract Number: |
NOw660468 |
| Report Number: |
0246518 |
Report Unavailable |
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