Accession Number:

AD0725893

Title:

An Application of the Hydrogen Bubble Technique to Visualization of the Flow about the Bow of a Ship - Correlation of Bubble Position with Ship Performance.

Descriptive Note:

Final rept. Jul 70-May 71,

Corporate Author:

STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s):

• Fridsma,Gerard

Report Date:

1971-02-01

Pagination or Media Count:

24.0

Abstract:

The hydrogen bubble technique was applied to visualization of the flow about the bow of a ship in waves. By means of movie frame analysis, the positions of bubbles emitted from forward areas of the bow are described as a function of speed and wave size. Relative to the keel, the bubbles are shown to sweep out wedge-shaped areas on the hull profile which expand linearly aft of the stem. Author

Descriptors:

• (*FLOW VISUALIZATION
• HYDRODYNAMICS)
• (*SHIP HULLS
• HYDRODYNAMICS)
• HYDROGEN
• BUBBLES
• SHIPS
• MOTION

Subject Categories:

• Marine Engineering
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE