Liquid oil painting: Free and forced convection in an enclosure with mechanical and thermal forcing

A fluid dynamics video is linked to this article, which have been submitted to the Gallery of Fluid Motion as part of the 65th American Physical Society meeting of the Division of Fluid Dynamics, held in San Diego, California, USA, over 17-20 November 2012. The video serves to visualize flows generated in a rectangular enclosure that are subjected to both mechanical and thermal forcing through a common horizontal boundary. This system exhibits features consistent with either horizontal convection or lid-driven cavity flows depending on the ratio between thermal and mechanical stirring, and three different cases are visualized in the linked videos.Comment: 2 video files attached, 4 pages, 1 figure. This article is submitted accompanying a video submitted to the Gallery of Fluid Motion as part of the 65th Division of Fluid Dynamics meeting of the American Physical Society (17-20 November, San Diego, CA, USA

Assessing the Olympics: Preliminary Economic Analysis of a Boston 2024 Games Impacts, Opportunities and Risks

The possibility of hosting the Summer Games is sparking significant debate in our community about the potential benefits, costs, and risks associated with hosting the Olympics. With these debates in mind, the Boston Foundation (TBF) commissioned the Economic and Public Policy Research group (EPPR) at the UMass Donahue Institute (UMDI) to perform a detailed economic impact assessment of Boston's proposed 2024 Olympic bid. While the Boston 2024 proposal is a working document and should be thought of as a "proof of concept" rather than a concrete plan, there are still several components of the proposal that can be evaluated at this time. The following report contributes to the public discourse by providing a preliminary assessment of the quantitative short-term economic impacts of hosting the 2024 Summer Olympic Games in Boston. In addition, this report highlights several of the potential opportunities, challenges, and risks associated with hosting the Olympic Games that are difficult to quantifiably measure at this time, but require further attention as the Olympic bid evolves over the next couple of years