Marcela A. Cruchaga, Carlos Ferrada, Nicolás Márquez, Sebastián Osses, Mario Storti and Diego Celentano
The present work is an experimental and numerical study of a sloshing problem including baffle effects. The purpose of this paper is to assess the numerical behavior of a…
Abstract
Purpose
The present work is an experimental and numerical study of a sloshing problem including baffle effects. The purpose of this paper is to assess the numerical behavior of a Lagrangian technique to track free surface flows by comparison with experiments, to report experimental data for sloshing at different conditions and to evaluate the effectiveness of baffles in limiting the wave height and the wave propagation.
Design/methodology/approach
Finite element simulations performed with a fixed mesh technique able to describe the free surface evolution are contrasted with experimental data. The experiments consist of an acrylic tank of rectangular section designed to attach baffles of different sizes at different distance from the bottom. The tank is filled with water and mounted on a shake table able to move under controlled horizontal motion. The free surface evolution is measured with ultrasonic sensors. The numerical results computed for different sloshing conditions are compared with the experimental data.
Findings
The reported numerical results are in general in good agreement with the experiments. In particular, wave heights and frequencies response satisfactorily compared with the experimental data for the several cases analyzed during steady state forced sloshing and free sloshing. The effectiveness of the baffles increases near resonance conditions. From the set of experiments studied, the major reduction of the wave height was obtained when larger baffles were positioned closer to the water level at rest.
Practical implications
Model validation: evaluation of the effectiveness of non-massive immersed baffles during sloshing.
Originality/value
The value of the present work encompass the numerical and experimental study of the effect of immersed baffles during sloshing under different imposed conditions and the comparison of numerical results with the experimental data. Also, the results shown in the present work are a contribution to the understanding of the role in the analysis of the proposed problem of some specific aspects of the geometry and the imposed motion.
Details
Keywords
The purpose of the paper is to explore and analyse the history of the predominantly Malaysian Network of Overseas Students Collectives in Australia (NOSCA), that existed from…
Abstract
Purpose
The purpose of the paper is to explore and analyse the history of the predominantly Malaysian Network of Overseas Students Collectives in Australia (NOSCA), that existed from 1985–1994.
Design/methodology/approach
The paper is based on extensive archival research in the State Library of New South Wales, the National Library of Australia and the University of New South Wales (UNSW) Archives. It makes particular use of the UNSW student newspaper Tharunka and the NOSCA publications Truganini and Default. It also draws upon nine oral history interviews with former members of NOSCA.
Findings
The NOSCA was particularly prominent at the UNSW, building a base there and engaging substantially in the student union. Informed by anarchism, its activists were interested in an array of issues–especially opposition to student fees and in solidarity with struggles for democracy and national liberation in Southeast Asia, especially around East Timor. Moreover, the group would serve as a training ground for a layer of activists, dissidents and opposition politicians throughout Southeast Asia, with a milieu of ex-NOSCA figures sometimes disparagingly referred to as “the NOSCA Mafia.”
Originality/value
While there has been much research on overseas students, there has been far less on overseas students as protestors and activists. This paper is the first case study to specifically hone in on NOSCA, one of the most substantial and left wing overseas student groups. Tracing the group's history helps us to reframe and rethink the landscape of student activism in Australia, as less white, less middle class and less privileged.
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In 2020, the latest James Bond film will hit cinema screens. The film has been produced by Eon Productions, is based on Ian Fleming’s suave, sophisticated super spy and stars…
Abstract
In 2020, the latest James Bond film will hit cinema screens. The film has been produced by Eon Productions, is based on Ian Fleming’s suave, sophisticated super spy and stars Daniel Craig in the title role. With a troubled production shoot well-documented in the media, Daniel Craig often seeming and contradictorily at odds of being both enamoured and loathing with the role, a director leaving through ‘creative differences’ and numerous screenwriters being drafted in as last-minute replacements or add-ons, it will be interesting to see how the latest Bond adventure fares both critically and financially.
At their heart, the Bond adventures – originally in Ian Fleming’s novels and short stories, and then in their film incarnations before spilling out into newer platforms – offer pure escapism for the reader, viewer, listener and gamer. Set against the backdrop of exoticism in a post-war climate, the stories centre around MI6 Agent, James Bond, stopping enemies of the British Empire in their attempts at world domination. They gave the reader a sense of both an attempt by Fleming/Bond to recapture Britain as an important power on the world stage. Whilst Bond may have sipped martinis as he coolly dispatched the latest despotic tyrant, they also offered up ideas about time, place, culture, the social climate of the period and gender.
This book will focus on numerous aspects of the Bond-catalogue, but in particular paying particular attention to how the portrayal of gender, both in the stories and behind the scenes, has helped shape one of the most significant, important and successful British franchises.