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Colloquium, Fall 2006

Day: Thursday, October 26 Time: 4:00pm Place: BH 227 Title: Local Descriptions of Boundary Conditions for Acoustic Enclosures Speaker: Edoh Amiran Abstract: The equations governing acoustics are easily put in the form of conservation laws and a solution with given boundary data can be tracked using conservation. To incorporate moving components such as voice coils (often called drivers, tweeters and woofers, or speakers) and the moving cabinet that forms the acoustic enclosure, the laws of motion for these must be put in a local form that can also be described using cells. In this talk I will review the solution using conservation form, and then show some local descriptions and how these can be incorporated into the computational process. The moving components are modeled as pressure changes, the cabinet is modeled using static forces, and the computational boundary uses interpolation so as to allow cells with non-rectangular edges. Refreshements: BH 300 at 3:30