Improvement and Validation of the Trident UNDEX Interface
This technical note provides a summary of work carried out to improve, verify and validate the Trident UNDEX Interface computer code for DRDC. The improvements included the incorporation of a capability to automatically generate, with minimum input from the user, input files for Vast-USA, and a stat...
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| creator | Norwood,M E Gregson,J |
| description | This technical note provides a summary of work carried out to improve, verify and validate the Trident UNDEX Interface computer code for DRDC. The improvements included the incorporation of a capability to automatically generate, with minimum input from the user, input files for Vast-USA, and a state-of-the-art survey of potential flow methods for calculating the dynamics of near-field UNDEX gas bubbles. The verification and validation focused on the recently developed tightly coupled Vast-USA interface. In total six different problems were investigated for: (1) comparison with the loosely coupled Vast-USA Interface; (2) comparison with LS-DYNA; (3) comparison with experiment; and (4) consistency with units. Recommendations are made for: (1) further improvements to the Trident UNDEX Interface, including the incorporation of a boundary element technique for modeling near-field UNDEX bubble dynamics; and (2) further verification and validation studies. |
| format | Report |
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The improvements included the incorporation of a capability to automatically generate, with minimum input from the user, input files for Vast-USA, and a state-of-the-art survey of potential flow methods for calculating the dynamics of near-field UNDEX gas bubbles. The verification and validation focused on the recently developed tightly coupled Vast-USA interface. In total six different problems were investigated for: (1) comparison with the loosely coupled Vast-USA Interface; (2) comparison with LS-DYNA; (3) comparison with experiment; and (4) consistency with units. Recommendations are made for: (1) further improvements to the Trident UNDEX Interface, including the incorporation of a boundary element technique for modeling near-field UNDEX bubble dynamics; and (2) further verification and validation studies.</description><language>eng</language><subject>BOUNDARY ELEMENT METHOD ; BUBBLE COLLAPSE ; FINITE ELEMENT METHOD ; GAS BUBBLES ; INTERFACES ; POTENTIAL FLOW ; SHIP STRUCTURES ; TRIDENT UNDEX INTERFACE ; UNDERWATER EXPLOSIONS ; UNDERWATER SHOCK ANALYSIS ; VALIDATION ; VERIFICATION ; WARSHIP SURVIVABILITY</subject><creationdate>2006</creationdate><rights>Approved For Public Release</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27546,27547</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/AD1003966$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Norwood,M E</creatorcontrib><creatorcontrib>Gregson,J</creatorcontrib><creatorcontrib>Martec Limited Halifax, NS Canada</creatorcontrib><title>Improvement and Validation of the Trident UNDEX Interface</title><description>This technical note provides a summary of work carried out to improve, verify and validate the Trident UNDEX Interface computer code for DRDC. 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| subjects | BOUNDARY ELEMENT METHOD BUBBLE COLLAPSE FINITE ELEMENT METHOD GAS BUBBLES INTERFACES POTENTIAL FLOW SHIP STRUCTURES TRIDENT UNDEX INTERFACE UNDERWATER EXPLOSIONS UNDERWATER SHOCK ANALYSIS VALIDATION VERIFICATION WARSHIP SURVIVABILITY |
| title | Improvement and Validation of the Trident UNDEX Interface |
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