University of Wisconsin–Milwaukee

About: University of Wisconsin–Milwaukee is a education organization based out in Milwaukee, Wisconsin, United States. It is known for research contribution in the topics: Population & Gravitational wave. The organization has 11839 authors who have published 28034 publications receiving 936438 citations. The organization is also known as: UWM & University of Wisconsin-Milwaukee.

The development of a bubble rising in a viscous liquid

Abstract: The rise and deformation of a gas bubble in an otherwise stationary liquid contained in a closed, right vertical cylinder is investigated using a modified volume-of-fluid (VOF) method incorporating surface tension stresses. Starting from a perfectly spherical bubble which is initially at rest, the upward motion of the bubble in a gravitational field is studied by tracking the liquid–gas interface. The gas in the bubble can be treated as incompressible. The problem is simulated using primitive variables in a control-volume formulation in conjunction with a pressure–velocity coupling based on the SIMPLE algorithm. The modified VOF method used in this study is able to identify and physically treat features such as bubble deformation, cusp formation, breakup and joining. Results in a two-dimensional as well as a three-dimensional coordinate framework are presented. The bubble deformation and its motion are characterized by the Reynolds number, the Bond number, the density ratio, and the viscosity ratio. The effects of these parameters on the bubble rise are demonstrated. Physical mechanisms are discussed for the computational results obtained, especially the formation of a toroidal bubble. The results agree with experiments reported in the literature.

Is it risky to go green? A volatility analysis of the green bond market

Abstract: Since its inception in 2007, the green bond market has experienced a compound growth rate of 50% annually. In 2014, green bond issuance totaled USD 36.6 billion, more than threefold its previous ye...

Knowing about Environmental Knowing: The Current State of Theory and Research on Environmental Cognition

Abstract: This paper reviews the 15 years of concentrated research on environmental cognition, including recent developments in theory construction. Included are discussions on the content of environmental representations, cognitive mapping, environmental meaning and symbolism, individual and group differences, eplanatory variables, differences due to characteristics of the physical environment, and the role of environmental cognition in urban spatial behavior. It is argued that people remember buildings less for their architectural form than for their use significance, that people conceive of cities in terms of basic dichotomies of human experiences, that environmental meaning and symbolism are more im-portant in experience than concrete aspects of orientation and cognitive mapping, that developmental changes occur in a stage-sequence pattern, that with increasing mobility peoples images of the environment shift from social and physical conceptions to symbolic conceptions, and that a complete explanation of enviro...