Hitesh S. Vaid, Kanwar Devesh Singh, Helen H. Lou, Daniel Chen and Peyton Richmond
This paper aims to present a novel run time combustion zoning (RTCZ) technique based on the working principle of eddy dissipation concept (EDC) for combustion modeling. This…
Abstract
Purpose
This paper aims to present a novel run time combustion zoning (RTCZ) technique based on the working principle of eddy dissipation concept (EDC) for combustion modeling. This technique selectively chooses cells in which the full reaction mechanism needs to be solved. The selection criterion is based on the concept of differentiating between combustion and the non-combustion zone. With this approach, considerable reduction in computational load and stability of the solution was observed and even the number of iterations required to achieve a stable solution was significantly reduced.
Design/methodology/approach
Computational fluid dynamics (CFD) simulations of real life combustion problems such as industrial scale flares, fuel fired furnaces and IC engines are difficult due to the strong interactions of chemistry with turbulence as well as the wide range distribution of time and length scales. In addition, comprehensive chemical mechanisms for hydrocarbon combustion may include hundreds of species and thousands of reactions that are known in detail for only a limited number of fuels. Even with the most advanced computers, accurate simulation of these problems is not easy. Hence, the modeler needs to have strategies to either simplify the chemistry or to improve the computational efficiency.
Findings
The EDC turbulence model has been widely used for treating the interaction between turbulence and the chemistry in combustion problems. In an EDC model, combustion is assumed to occur in a constant pressure reactor, with initial conditions taken as the concentration of the current species and temperature in the cell. With these assumptions, EDC solves the full or simplified reaction mechanism in all the grid cells at all iterations.
Originality/value
This paper presents a novel RTCZ technique for improving the computational efficiency, when the EDC model is used in CFD modeling. Considerable reduction in computational time and stability of the solution can be achieved. It was also observed that the number of iterations required to achieve a converged solution was significantly reduced.
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Life studies are a rich source for further research on the role of the Afro‐American woman in society. They are especially useful to gain a better understanding of the…
Abstract
Life studies are a rich source for further research on the role of the Afro‐American woman in society. They are especially useful to gain a better understanding of the Afro‐American experience and to show the joys, sorrows, needs, and ideals of the Afro‐American woman as she struggles from day to day.
THE continuance of war into the New Year proves again the fatuousness of prophecy which had assured us of peace, or at least the cessation of hostilities, by Christmas. We have to…
Abstract
THE continuance of war into the New Year proves again the fatuousness of prophecy which had assured us of peace, or at least the cessation of hostilities, by Christmas. We have to face now what must be another year of conflict, unless miracles occur as they sometimes do in war, and thus the postponement of many of the plans that the Library Association and a great many other bodies and persons have been making; but we must not offend by prophesying. At this time a glance back on the record of 1944 is justifiable and may be salutary.
Jia Tina Du, Qing Ke, Clara M. Chu, Helen Partridge and Dandan Ma
This scoping review article examined research on information behavior in communities over the past two decades (2000–2023). The review aims to uncover the characteristics and…
Abstract
Purpose
This scoping review article examined research on information behavior in communities over the past two decades (2000–2023). The review aims to uncover the characteristics and types of communities studied, the featured information behaviors, and the research methods employed.
Design/methodology/approach
The PRISMA-ScR guidelines were followed to conduct this review. Five databases were selected to search for relevant empirical research. A total of 57 studies met the inclusion criteria for review. Thematic synthesis was used to analyze the multidimensional findings of included studies.
Findings
A steady increase in the number of articles is evident in the past two decades. The review suggests that information behavior in community studies involved collaboration from other disciplines, such as public health and business management. More than half of the communities studied are virtual communities (56.1%), followed by communities of identity, professional communities and support communities, communities of interest, geographic communities, and academic communities. There are overlaps among these categories. Information sharing (63.2%) and information seeking (57.9%) were the most studied behavior of communities, followed by information use, information needs, and information judgment. Questionnaires (38.6%) and interviews (35.1%) were the most commonly used data collection techniques in studying information behavior in communities. It is noteworthy that eleven (19.3%) mentioned utilizing community-engaged approaches.
Originality/value
This is the first scoping review to explore the intersecting constructs of community research and information behavior studies. We call for further research to understand the contextual factors that shape the community’s information environments and to increase awareness of the partnership between communities and researchers.
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Debalina Sengupta, Yinlun Huang, Cliff I. Davidson, Thomas F. Edgar, Mario R. Eden and Mahmoud M. El-Halwagi
Sustainable manufacturing may be defined as the creation of manufactured products that use processes that are non-polluting, conserve energy and natural resources, and are…
Abstract
Purpose
Sustainable manufacturing may be defined as the creation of manufactured products that use processes that are non-polluting, conserve energy and natural resources, and are economically sound and safe for employees, communities and consumers. Recently, there have been several industrial and governmental endeavors to launch sustainable manufacturing initiatives. To support such initiatives and to prepare the next generation of scientists and engineers, academic institutions have a responsibility to introduce educational programs and tools in the area of sustainable manufacturing. The purpose of this paper is to report on the approach, progress and contributions of a US National Science Foundation-sponsored project titled: “The Sustainable Manufacturing Advances in Research and Technology Coordination Network (SMART CN)”.
Design/methodology/approach
The project aims to bridge the gap between the academic knowledge discovery and industrial technology innovation for sustainable manufacturing. Toward this goal, various research and educational activities have been undertaken to introduce Sustainable Manufacturing Case Studies for use by academic instructors to a diverse group of undergraduate, graduate and industry professionals.
Findings
In this paper, the need for education on sustainable manufacturing has been focused upon, followed by approaches toward addressing these needs, concluding with examples of case studies developed through the SMART-CN project framework.
Originality/value
This work provides the engineering community with structured modules for introducing the topic of sustainable manufacturing in the curriculum.
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Chee Wei Cheah, Soo Yeong Ewe and Helen Hui Ping Ho
This study advances network brokerage theory by examining both benefits-driven and altruistic brokerage behaviors within the mutual fund retail markets of emerging economies.
Abstract
Purpose
This study advances network brokerage theory by examining both benefits-driven and altruistic brokerage behaviors within the mutual fund retail markets of emerging economies.
Design/methodology/approach
Using a methodological combination of netnographic observations and in-depth interviews with fund investors, social influencers, sales agents and staffs from do-it-yourself (DIY) investment platforms, it uncovers the digital evolution of the mutual fund industry.
Findings
Our findings illuminate a significant pivot from traditional retail channels to third-party DIY investment platforms, a change accelerated by the recent pandemic. This shift underscores a critical theoretical extension by spotlighting the altruistic actions of social influencers, or key opinion leaders (KOLs), challenging the prevalent focus on solely benefits-driven motives in network brokerage literature. Furthermore, the study reveals a diminishing significance of arbitrage network brokering amidst the industry’s digital overhaul.
Originality/value
Concluding with an insightful discussion on its implications to policymakers and practitioners and acknowledging potential limitations, this research offers valuable perspectives for understanding the dynamics of network brokerage in the context of digital transformation within consumer financial markets.
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ELSEWHERE in this number we list libraries which have Esent us copies of their annual reports which we are glad to have. Now and again we are able to elaborate on these, but in…
Abstract
ELSEWHERE in this number we list libraries which have Esent us copies of their annual reports which we are glad to have. Now and again we are able to elaborate on these, but in the present issue that has not been possible. We would say, however, that these reports are deserving of the attention of librarians generally, and of students at the library schools. They are records of work in progress, and they do suggest the development of library policy. The best of them are of textbook value.
Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are…
Abstract
Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.