Application of improved numerical schemes

Two approaches which accelerate the solution of the steady state Navier-Stokes equations are discussed. The SIMPLER algorithm, a revised version of SIMPLE, provides a more accurate pressure field for each iteration through the momentum equations, thereby speeding convergence. PISO (Pressure Implicit Split Operator), performs a secondary correction of the velocity and pressure fields (after the typical pressure correction) which enhances convergence. Both schemes account for terms neglected in the SIMPLE approach, but do so in slightly different ways. Two dimensional driven cavity flow and flow over a step were calculated to examine the effect of geometry on the performance of these schemes. Computations were carried out on a series of progressively finer grids. The effect of relaxation number on convergence rate was analyzed, using results from SIMPLE as criteria for performance correlation. Results show: (1) the improved schemes promoted convergence by up to 60% for the driven cavity and 40% for flow over a step; (2) for the driven cavity problem, the efficiency of PISO and SIMPLER increased as the number of nodes increased; and (3) to ensure faster convergence, higher relaxation numbers must be applied

The Devil Made Them Do It

A select compilation of tales of mischief and mayhem on the Furman campus. And you know who you are

Worlds in a bottle

In this article, I call for an object-centered ethnography to illuminate the ontological multiplicity that marks the worlds of health and healing that people inhabit. Focusing on a sports-drink bottle filled with a remedy from a faith healer in rural South Africa, I explore the ‘partial connections’ that link the world of global health and the world of traditional healing through objects and bodies. Drawing on medical anthropology focused on global health and medical pluralism as well as scholarship from the ontological turn, I argue that global health programs are limited by their failure to recognize the ontological multiplicity their target populations inhabit

Internal Ecologies and the Limits of Local Biologies: A Political Ecology of Tuberculosis in the Time of AIDS

South Africa is known for its high rates of HIV and tuberculosis (TB), where HIV has provided fertile ground for the transmission of TB. Indeed, HIVTB coinfection is widely understood as one of the, if not the, biggest health problems in the country. In practice, doctors and nurses understand that unusual cases of tuberculosis indicate HIV and they make diagnosis and treatment plans accordingly. International treatment standards and protocols inform this practice as doctors pay little attention to individual people and the political, economic, cultural, social, and environmental contexts in which they live. Political ecology, with its nested, place-based analysis, provides an excellent framework for understanding health in South Africa in the context of poverty; local understandings; and global policies, protocols, and priorities. To develop a political ecology of health, this article builds on the concept of local biologies, which understands health at the community scale as simultaneously biological, cultural, and social. Illustrated with the story of one HIV-negative woman\u27s case of miliary TB, this article incorporates local biologies into a political ecology of health that mobilizes scales from the global to the internal ecologies of individual bodies. Centering its analysis on the place of the body, this article offers surprising insights into the HIV/AIDS epidemic. By examining the science of military tuberculosis alongside population-scale understandings of HIVTB coinfection in a specific context, this article challenges the way we understand the health impacts of HIV/AIDS, suggesting that the epidemic has negative health implications even for those who are HIV negative

Juanita H. Neely Papers - Accession 6

The Juanita H. Neely Papers consist of correspondence, autobiographical and biographical data, speeches, radio talks, clippings, photographs, and articles mainly relating to her work with the South Carolina Home Demonstration Extension Service. There is also family history material relating to the Neely family. This collection is a good source of information concerning the South Carolina Home Economics Extension program in the first half of the twentieth century. While the papers range from 1911 to about 1970, the more valuable and greater part of the collection extends from the mid-1920s to 1957, when Juanita Neely rose from a county home economics extension agent to the State Demonstration Agent. The collection contains many of her speeches, radio talks and articles made during this period; the reference material that she used for her speeches; letters of appreciation from agents and others upon her retirement; and materials relating to the Winthrop-Clemson controversy in 1955 concerning the location of the Home Economics Extension Program. There is also biographical material, award notices, and some correspondence dating after Juanita Neely\u27s retirement from the Home Economics Extension Program. Additional Neely information may be found by referring to the Winthrop Archives, record group 412, and the 1958-1959 edition of Who’s Who of American Women.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/1015/thumbnail.jp

Wind-Tunnel Tests of an NACA 44R-Series Tapered Wing with a Straight Trailing Edge and a Constant-Chord Center Section

As part of a general investigation in the NACA 19-foot pressure tunnel to determine stall characteristics and effectiveness of high-lift devices on wings of various sections, tests were made of a tapered. wing having NACA 44R-series airfoil sections. Lift, drag, pitching-moment, and stall characteristics were determined at a Reynolds number of 4,850,000 for the plain wing and for the wing with partial-and with full-span split flaps. The stall progressed slowly over The plain wing; a gradual loss of lift for angles of attack up to and beyond that for the maximum lift coefficient resulted. As Compared with the stall of the plain wing, the initial stall of the wing with either partial-span or full-span flaps deflected occurred at a higher angle of attack and the stall progressed much more rapidly. The maximum lift coefficients at a Reynolds number of 4,850,000 were 1.35 for the plain wing, 2.25 for the wing with partial-span flaps at 60 deg, and 2.67 for the wing with full-span flaps at 60 deg. The positions of the aerodynamic center, in terms of mean chords back of the leading edge of the root section, were approximately 0.458 with no flaps, 0.483 with partial-span flaps at 60 deg, and 0.498 with full-span flaps at 60 deg

A tutorial task and tertiary courseware model for collaborative learning communities

RAED provides a computerised infrastructure to support the development and administration of Vicarious Learning in collaborative learning communities spread across multiple universities and workplaces. The system is based on the OASIS middleware for Role-based Access Control. This paper describes the origins of the model and the approach to implementation and outlines some of its benefits to collaborative teachers and learners