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1 – 4 of 4Jyoti Pandey, Mohd. Zahid Ansari and Afzal Husain
Porous media can provide excellent performance in thermal energy transport applications. This study aims to optimise the square porous slabs (placed in the middle of the channel…
Abstract
Purpose
Porous media can provide excellent performance in thermal energy transport applications. This study aims to optimise the square porous slabs (placed in the middle of the channel) parameters to enhance the cooling performance of the jet-impingement microchannel heat sink.
Design/methodology/approach
Three levels of each design parameters, i.e. porous slab side, porous slab height, type of material, permeability and quadratic drag factor, are studied; and an L27 orthogonal array is adopted to generate the design points in the specified design space. Optimum designs of the porous media slabs are achieved to minimise the maximum-wall temperature, thermal resistance and pressure drop and maximise the average heat transfer coefficient and figure of merit (FOM).
Findings
Results exhibited that the porous media material and permeability are the most, whereas drag factor is the least significant factors with respect to the overall performance of the heat sink. The optimum value of FOM for the proposed hybrid heat sink model belongs to the set of design variables, i.e. 0.4 mm slab side, 0.6 mm slab height, 5 × 10−11 m2 permeability, 0.21 drag factor and copper as substrate material.
Originality/value
This study proposes a novel design and a hybrid approach to investigate and optimise the hydrothermal performance of jet impingements on porous slabs inserted in the microchannels.
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Keywords
Sonika Sahu, Piyush D. Ukey, Narendra Kumar, Ravi Pratap Singh and Mohd. Zahid Ansari
This study aims to generate different three-dimensional (3D) foam models using computer tomography (CT) scan and solid continuum techniques. The generated foam models were used to…
Abstract
Purpose
This study aims to generate different three-dimensional (3D) foam models using computer tomography (CT) scan and solid continuum techniques. The generated foam models were used to study deformation mechanism and the elastic-plastic behaviour with the existing experimental foam behaviour.
Design/methodology/approach
CT scan model was generated by combing 2D images of foam in MIMICS software. Afterwards, it was imported in ABAQUS/CAE software. However, solid continuum model was generated in ABAQUS/CAE software by using crushable foam properties. Then, the generated foam models were sets boundary conditions for a compression test.
Findings
CT scans capture the actual morphology of foam sample which may directly an image based finite element foam model. The sectional views of both the models were used to observe deformation mechanism on compression. The real compressive behaviour of foam was visualised in CT-Scan foam model. It was observed that CT-scan model was the more accurate modelling method than crushable foam model.
Originality/value
The internal structure of foam is very complex and difficult to analyse. Therefore, CT-scanning may be the accurate method for capturing the macro-level detailing of foam structure. A CT-scan foam model can be used for multiple times for mechanical analysis using a simulation software, which may reduce the manufacturing and the experimental cost and time.
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Lydia Murillo-Ramos, Irene Huertas-Valdivia and Fernando E. García-Muiña
This study aims to delineate the fast-growing path of human resource management (HRM) research with a sustainable orientation and resolve confusion over the differences and…
Abstract
Purpose
This study aims to delineate the fast-growing path of human resource management (HRM) research with a sustainable orientation and resolve confusion over the differences and interdependences of the various approaches that have emerged: green human resource management (GHRM), sustainable human resource management (Sustainable HRM), and socially responsible human resource management (SR-HRM).
Design/methodology/approach
In this study, bibliometrics and science mapping were used to analyze the field's conceptual structure based on 587 related documents extracted from the ISI Web of Science database. Co-word analysis with SciMAT software enabled the authors to map the main themes studied and identify evolution, importance, and relevance.
Findings
SR-HRM is the least developed of the three approaches analyzed and has been overlooked by the journals that publish the most work in the field of HR. The authors identify a lack of sustainability-related HRM studies on higher education and an ongoing need both to explore the role of culture in GHRM implementation and to explain further the potential non-green behavioral outcomes that can result from GHRM's use.
Practical implications
This study demonstrates how human resource factors are key to managing challenges such as aging workforce, unstable employment relationships, implementation of green supply chain management, and Industry 4.0.
Originality/value
This study explores in detail the interrelations among various emerging sustainable human resource approaches and subtopics derived from the interrelations to reveal hotspots, dilemmas, paradoxes, and research gaps.
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Kartik Balkumar, Vidyadhar V. Gedam, Mudunuri Himateja, S.P. Anbuudayasankar, M.S. Narassima, K. Ganesh, M. Dwarakanath and Subramanian Pazhani
Over the last two decades, green supply chain management (GSCM) has enabled businesses to operate in an environmentally friendly manner. The present review examines 234 research…
Abstract
Purpose
Over the last two decades, green supply chain management (GSCM) has enabled businesses to operate in an environmentally friendly manner. The present review examines 234 research articles and proposes a methodical literature review on GSCM, focusing on the aspects of sustainable development.
Design/methodology/approach
The work examines conceptual, analytical, empirical and non-empirical research articles, analyzing at all levels of the organization, such as firm, dyad, supply chain and network. The objective of the review is to provide insights into the state and scope of existing research in the domain of GSCM, to identify the prevalence of GSCM and to consolidate the trend of future research. The literature review follows a systematic methodology for analyzing the literature.
Findings
The findings can support researchers in identifying research areas with significant impact and streamline research on GSCM in the future. Practitioners can utilize this structured classification to strategize their green initiatives in their firms.
Originality/value
The work contributes to providing literature that explores a detailed review in GSCM. The proposed literature review captures critical aspects in the domain of GSCM and offers future research directions.
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