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Waterjet Wake Characterization Suite

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
77956
Program Year/Program:
2006 / STTR
Agency Tracking Number:
N064-022-0187
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Dynaflow, Inc.
10621-J Iron Bridge Rd. Jessup, MD 20794-9381
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2006
Title: Waterjet Wake Characterization Suite
Agency / Branch: DOD / NAVY
Contract: N00014-06-M-0218
Award Amount: $70,000.00
 

Abstract:

Bubble generation and entrainment in the transom region of a surface ship, along its hull, and in breaking waves are major ship signature contributors. For advanced ships such as the LCS, another source of air entrainment is added with the propulsion waterjets interacting with the free surface in the transom region. While significant research on breaking waves bubble generation exists, little is known about waterjet propulsion impact on bubbly wakes. Such wakes provide an excellent opportunity to wake homing torpedoes because of bubbles large acoustic cross section. Therefore, it is imperative to develop computational tools capable of predictive analysis for design optimization of bubbly wakes of waterjet driven ships. DYNAFLOW and ARL at the Pennsylvania State University propose to develop a suite of tools for modeling the waterjet driven ships bubbly wakes, conducting acoustic analysis relevant to wake homing threats, assessing threat performance in engagement simulations and conducting experiments to validate and refine the models. A suite of CFD codes known to reproduce conventional ship wakes properly will be used and modified by adding physical models of the waterjet free surface bubble entrainment mechanisms, which will be developed through experimental observation and modeling. BENEFITS: The proposed tool suite can be used for design evaluation of waterjet propelled surface ships. The developed models for bubble generation, propagation, and acoustics can be also combined with other CFD methods and could benefit commercial sectors such as fast ship industry, food manufacturing, oil and gas industry, chemical industry, etc.

Principal Investigator:

Georges Chahine
President
3016043688
glchahine@dynaflow-inc.com

Business Contact:

Georges Chahine
President
3016043688
glchahine@dynaflow-inc.com
Small Business Information at Submission:

DYNAFLOW, INC.
10621-J Iron Bridge Rd. Jessup, MD 20794

EIN/Tax ID: 521573410
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
ARL PEN STATE
ARL Pen State U PO Box 30
State College, PA 16804
Contact: Pamela Righter
Contact Phone: (814) 863-3991
RI Type: Nonprofit college or university