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Article
Publication date: 20 December 2023

Oskar Szulc, Piotr Doerffer, Pawel Flaszynski and Marianna Braza

This paper aims to describe a proposal for an innovative method of normal shock wave–turbulent boundary layer interaction (SBLI) and shock-induced separation control.

Abstract

Purpose

This paper aims to describe a proposal for an innovative method of normal shock wave–turbulent boundary layer interaction (SBLI) and shock-induced separation control.

Design/methodology/approach

The concept is based on the introduction of a tangentially moving wall upstream of the shock wave and in the interaction region. The SBLI control mechanism may be implemented as a closed belt floating on an air cushion, sliding over two cylinders and forming the outer skin of the suction side of the airfoil. The presented exploratory numerical study is conducted with SPARC solver (steady 2D RANS). The effect of the moving wall is presented for the NACA 0012 airfoil operating in transonic conditions.

Findings

To assess the accuracy of obtained solutions, validation of the computational model is demonstrated against the experimental data of Harris, Ladson & Hill and Mineck & Hartwich (NASA Langley). The comparison is conducted not only for the reference (impermeable) but also for the perforated (permeable) surface NACA 0012 airfoils. Subsequent numerical analysis of SBLI control by moving wall confirms that for the selected velocity ratios, the method is able to improve the shock-upstream boundary layer and counteract flow separation, significantly increasing the airfoil aerodynamic performance.

Originality/value

The moving wall concept as a means of normal shock wave–turbulent boundary layer interaction and shock-induced separation control has been investigated in detail for the first time. The study quantified the necessary operational requirements of such a system and practicable aerodynamic efficiency gains and simultaneously revealed the considerable potential of this promising idea, stimulating a new direction for future investigations regarding SBLI control.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 34 no. 7
Type: Research Article
ISSN: 0961-5539

Keywords

Book part
Publication date: 14 August 2017

Galit Meisler, Eran Vigoda-Gadot and Amos Drory

This chapter builds on previous research that conceptualized organizational politics as an organizational stressor. After reviewing the studies that integrated the occupational…

Abstract

This chapter builds on previous research that conceptualized organizational politics as an organizational stressor. After reviewing the studies that integrated the occupational stress literature with the organizational politics literature, it discusses the negative implications of the use of intimidation and pressure by supervisors, implications that have generally been overlooked. Specifically, the chapter presents a conceptual model positing that the use of intimidation and pressure by supervisors creates stress in their subordinates. This stress, in turn, affects subordinates’ well-being, evident in higher levels of job dissatisfaction, job burnout, and turnover intentions. The stress also reduces the effectiveness of the organization, reflected in a high absenteeism rate, poorer task performance, and a decline in organizational citizenship behavior. The model also maintains that individual differences in emotional intelligence and political skill mitigate the stress experienced by subordinates, resulting from the use of intimidation and pressure by their supervisors. In acknowledging the destructive implications of such behavior in terms of employees’ well-being and the productivity of the organization, the chapter raises doubts about the wisdom of using it, and advises supervisors to rethink its use as a motivational tool. Implications of this chapter, as well as future research directions, are discussed.

Details

Power, Politics, and Political Skill in Job Stress
Type: Book
ISBN: 978-1-78743-066-2

Keywords

Article
Publication date: 1 January 1985

Since the first Volume of this Bibliography there has been an explosion of literature in all the main areas of business. The researcher and librarian have to be able to uncover…

16659

Abstract

Since the first Volume of this Bibliography there has been an explosion of literature in all the main areas of business. The researcher and librarian have to be able to uncover specific articles devoted to certain topics. This Bibliography is designed to help. Volume III, in addition to the annotated list of articles as the two previous volumes, contains further features to help the reader. Each entry within has been indexed according to the Fifth Edition of the SCIMP/SCAMP Thesaurus and thus provides a full subject index to facilitate rapid information retrieval. Each article has its own unique number and this is used in both the subject and author index. The first Volume of the Bibliography covered seven journals published by MCB University Press. This Volume now indexes 25 journals, indicating the greater depth, coverage and expansion of the subject areas concerned.

Details

Management Decision, vol. 23 no. 1
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 1 June 2002

Barrie O. Pettman and Richard Dobbins

This issue is a selected bibliography covering the subject of leadership.

28426

Abstract

This issue is a selected bibliography covering the subject of leadership.

Details

Equal Opportunities International, vol. 21 no. 4/5/6
Type: Research Article
ISSN: 0261-0159

Keywords

Book part
Publication date: 13 December 2023

Paul C. Harris, Janice Byrd, Hyunhee Kim, Miray D. Seward, Araya Baker, Alagammai Meyyappan, Deepika Nantha Kumar and Tia Nickens

The authors focus on using Critical Race Theory (CRT) as a lens through which to analyze the holistic welfare development of Black male student-athletes, namely their identity…

Abstract

The authors focus on using Critical Race Theory (CRT) as a lens through which to analyze the holistic welfare development of Black male student-athletes, namely their identity development and overall college and career readiness. The authors contend that if structured and delivered well with the appropriate supports, athletics can be more of a mobilizing mechanism for Black males versus an exploitive one. Specifically, athletic identity does not have to be exclusive, but rather one aspect of the student-athletes' multidimensional sense of self. To this end, the authors outline specific research, practice, and policy recommendations that address the unique challenges of Black male student-athletes in K-16.

Details

Black Males in Secondary and Postsecondary Education
Type: Book
ISBN: 978-1-80455-578-1

Keywords

Book part
Publication date: 24 May 2021

Wenqing Li, Nathan Petek and Hassan Faghani

When products are differentiated, applying the standard critical loss formula to assess whether it is profitable for a hypothetical monopolist to impose a common price increase…

Abstract

When products are differentiated, applying the standard critical loss formula to assess whether it is profitable for a hypothetical monopolist to impose a common price increase can lead to delineating an antitrust market that is too broad by setting a critical loss threshold that is too low. This error is particularly likely to occur when the products exhibit very different per-unit profits, own price elasticities, and cross price elasticities. In particular, different per-unit profits are a necessary condition for this error to occur and this difference is more likely to be driven by an asymmetry in prices than by an asymmetry in costs when own price elasticities are moderate in magnitude. In contrast, differences in the quantity sold of each product do not tend to lead to errors in market definition. Given the issues associated with the standard critical loss analysis, critical loss analysis with asymmetric price increases and the gross upward pricing pressure index are practical alternative approaches for conducting market definition analysis when products in a candidate market are differentiated.

Details

The Law and Economics of Patent Damages, Antitrust, and Legal Process
Type: Book
ISBN: 978-1-80071-024-5

Keywords

Book part
Publication date: 13 August 2018

Robert L. Dipboye

Abstract

Details

The Emerald Review of Industrial and Organizational Psychology
Type: Book
ISBN: 978-1-78743-786-9

Book part
Publication date: 31 May 2016

Blanca A. Camargo, Tazim Jamal and Erica Wilson

Pressing sustainability issues face the 21st century, as identified by the Millennium Development Goals and its post initiatives, and ethical principles related to fairness…

Abstract

Pressing sustainability issues face the 21st century, as identified by the Millennium Development Goals and its post initiatives, and ethical principles related to fairness, equity, and justice are increasingly important to address climate change and resource scarcities. Yet, such ethical dimensions remain surprisingly little addressed in the tourism literature. Ecofeminist critique offers insights into this gap, identifying historical antecedents in patriarchal, Enlightenment-driven discourses of science where positivistic approaches facilitate the control and use of nature and women. This chapter draws from this critique to propose a preliminary, justice-oriented framework to resituate sustainable tourism within an embodied paradigm that covers intangibles such as emotions, feelings, and an ethic of care.

Details

Tourism Research Paradigms: Critical and Emergent Knowledges
Type: Book
ISBN: 978-1-78350-929-4

Keywords

Book part
Publication date: 24 July 2020

Wayne A. Hochwarter, Ilias Kapoutsis, Samantha L. Jordan, Abdul Karim Khan and Mayowa Babalola

Persistent change has placed considerable pressure on organizations to keep up or fade into obscurity. Firms that remain viable, or even thrive, are staffed with decision-makers…

Abstract

Persistent change has placed considerable pressure on organizations to keep up or fade into obscurity. Firms that remain viable, or even thrive, are staffed with decision-makers who capably steer organizations toward opportunities and away from threats. Accordingly, leadership development has never been more critical. In this chapter, the authors propose that leader development is an inherently dyadic process initiated to communicate formal and informal expectations. The authors focus on the informal component, in the form of organizational politics, as an element of leadership that is critical to employee and company success. The authors advocate that superiors represent the most salient information source for leader development, especially as it relates to political dynamics embedded in work systems. The authors discuss research associated with our conceptualization of dyadic political leader development (DPLD). Specifically, the authors develop DPLD by exploring its conceptual underpinnings as they relate to sensemaking, identity, and social learning theories. Once established, the authors provide a refined discussion of the construct, illustrating its scholarly mechanisms that better explain leader development processes and outcomes. The authors then expand research in the areas of political skill, political will, political knowledge, and political phronesis by embedding our conceptualization of DPLD into a political leadership model. The authors conclude by discussing methodological issues and avenues of future research stemming from the development of DPLD.

Details

Research in Personnel and Human Resources Management
Type: Book
ISBN: 978-1-80043-076-1

Keywords

Book part
Publication date: 15 July 2019

Samantha L. Jordan, Andreas Wihler, Wayne A. Hochwarter and Gerald R. Ferris

Introduced into the literature a decade ago, grit originally defined as perseverance and passion for long-term goals has stimulated considerable research on positive effects…

Abstract

Introduced into the literature a decade ago, grit originally defined as perseverance and passion for long-term goals has stimulated considerable research on positive effects primarily in the academic and military contexts, as well as attracted widespread media attention. Despite recent criticism regarding grit’s construct and criterion-related validity, research on grit has begun to spill over into the work context as well. In this chapter, the authors provide an overview of the initial theoretical foundations of grit as a motivational driver, and present newer conceptualizations on the mechanisms of grit’s positive effects rooted in goal-setting theory. Furthermore, the authors also draw attention to existing shortcomings of the current definition and measurement of grit, and their implications for its scientific and practical application. After establishing a theoretical understanding, the authors discuss the potential utility of grit for human resource management, related to staffing and recruitment, development and training, and performance management systems as well as performance evaluations. The authors conclude this chapter with a discussion of necessary and potential future research, and consider the practical implications of grit in its current state.

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