Waterjet Wake Characterization Suite

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-06-M-0217
Agency Tracking Number: N064-022-0190
Amount: $69,991.00
Phase: Phase I
Program: STTR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: N06-T022
Solicitation Number: N/A
Small Business Information
MECHMATH LLC
14530 Bluebird Trail, Prior Lake, MN, 55372
DUNS: 012796715
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Svetlana Kovinskaya
 President
 (952) 402-9642
 mechmath@mechmath.com
Business Contact
 Eduard Amromin
Title: Director
Phone: (952) 402-9642
Email: amromin@aol.com
Research Institution
 UNIV. OF MINNESOTA
 Roger Arndt
 3rd SE Avenue at Mississippi
Minneapolis, MN, 55414
 (612) 625-2883
 Nonprofit college or university
Abstract
The US Navy is interested in analytical methods and tools to predict ship bubbly wake acoustic signatures for waterjet propelled surface ships with underwater waterjet outlet such as the Littoral Combat Ship (LCS). Wake features of propeller-driven ships are well studied, but the ability to perform predictive analysis and wakes from waterjet driven advanced hull forms do not currently exist. The methods suggested by the firm are assigned to analyze (1) cavitation inception and growth in the mixing region of the jet and the surrounding hull wake, (2) the bubble evolution in the turbulent flow to the far wake and (3) sound propagation in the bubbly far wake and reflection coefficients for the ship wakes. The suggested tools suite will be composed from elements preliminary proven on simplified problems and manifested the ability to predict scale effects. Their following validation by Phase I and Option 1 experiments on measurements of bubble distributions in the model wake will be performed in the water tunnel of the Saint Anthony Fall Laboratory at the University of Minnesota. BENEFITS: Commercialization will include a large variety of ships, from fast ferries to recreation boats.

* information listed above is at the time of submission.

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