Accession Number:

AD0648390

Title:

ADDED MASS OF CYLINDERS REPRESENTING TYPICAL MODERN SUBMARINE CROSS-SECTIONS.

Descriptive Note:

Final technical rept. no. 1, Sep 59-Oct 60,

Corporate Author:

TRG INC MELVILLE N Y

Personal Author(s):

• Ward,Lawrence W.

Report Date:

1960-10-11

Pagination or Media Count:

37.0

Abstract:

The cross sections of typical modern submarines in way of the superstructure andor sail are idealized to a circular arc bump and vertical fin combined with a circular main hull. This boundary is mapped onto the real axis of the complex plane using a series of mappings including the Schwarz non-linear transformation for curvilinear polygons. The new flow is analyzed and the two-dimensional added mass calculated, by means of series expansions, for horizontal and vertical motion. The results are compared with other known solutions and with those derived from making various simplifying assumptions, and appear reasonable. Specific examples are worked out and conclusions drawn. Author

Descriptors:

• *SUBMARINES
• STRUCTURAL COMPONENTS
• SUBMARINE HULLS
• FLUID FLOW
• WATER WAVES
• TRANSFORMATIONS(MATHEMATICS)

Subject Categories:

• Submarine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE