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Article
Publication date: 16 November 2020

Mahantesh M. Nandeppanavar, Kemparaju M.C. and N. Raveendra

This paper aims to report the investigation of over heat and mass transfer of convective Casson fluid flow over a moving vertical plate with nonlinear thermal radiation and…

56

Abstract

Purpose

This paper aims to report the investigation of over heat and mass transfer of convective Casson fluid flow over a moving vertical plate with nonlinear thermal radiation and convective boundary conditions.

Design/methodology/approach

The main partial differential equations of the flow, heat and concentration profiles were rehabilitated to nonlinear ordinary differential equations by using an appropriate similarity transformation. The resultant nonlinear ordinary differential equations (ODEs) are solved numerically applying fourth-order Runge–Kutta shooting technique and functions of ODE45 from MATLAB.

Findings

The effect of convective heat transfer, buoyancy ratio parameter, nonlinear thermal radiation, Prandtl number, Rayleigh number and Schmidt number over velocity, temperature and concentration profiles, equivalent to abundant somatic parameters were graphically scrutinized.

Originality/value

All the results are very promising and further there is got good agreement of results when compared with earlier published results at limiting conditions.

Details

World Journal of Engineering, vol. 18 no. 1
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 22 July 2021

Mahantesh M. Nandeppanavar, Kemparaju M.C. and Raveendra N.

This paper aims to find the influence of convective heat transfer, buoyancy proportions, nonlinear thermal radiation, Prandtl number, Rayleigh number and Schmidt number on…

69

Abstract

Purpose

This paper aims to find the influence of convective heat transfer, buoyancy proportions, nonlinear thermal radiation, Prandtl number, Rayleigh number and Schmidt number on velocity, temperature and concentration profiles.

Design/methodology/approach

This paper explores the heat and mass transfer of a stagnation point stream of free convective Casson fluid over a moving vertical plate with nonlinear thermal radiation and convective boundary restrictions. The governing PDEs of stream, heat and concentration profiles were reformed into an arrangement of nonlinear ODEs by using similarity transformation. This framework was then tackled numerically by applying forth-order RK shooting strategy.

Findings

Distribution of flow, velocity and temperature profiles for different values of governing parameters are analyzed.

Originality/value

The original results are depicted in terms of plots.

Details

Journal of Engineering, Design and Technology , vol. 21 no. 1
Type: Research Article
ISSN: 1726-0531

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Article
Publication date: 28 May 2020

Mahantesh M. Nandeppanavar, M.C. Kemparaju, R. Madhusudhan and S. Vaishali

The steady two-dimensional laminar boundary layer flow, heat and mass transfer over a flat plate with convective surface heat flux was considered. The governing nonlinear partial…

64

Abstract

Purpose

The steady two-dimensional laminar boundary layer flow, heat and mass transfer over a flat plate with convective surface heat flux was considered. The governing nonlinear partial differential equations were transformed into a system of nonlinear ordinary differential equations and then solved numerically by Runge–Kutta method with the most efficient shooting technique. Then, the effect of variable viscosity and variable thermal conductivity on the fluid flow with thermal radiation effects and viscous dissipation was studied. Velocity, temperature and concentration profiles respectively were plotted for various values of pertinent parameters. It was found that the momentum slip acts as a boost for enhancement of the velocity profile in the boundary layer region, whereas temperature and concentration profiles decelerate with the momentum slip.

Design/methodology/approach

Numerical Solution is applied to find the solution of the boundary value problem.

Findings

Velocity, heat transfer analysis is done with comparing earlier results for some standard cases.

Originality/value

100

Details

Multidiscipline Modeling in Materials and Structures, vol. 16 no. 5
Type: Research Article
ISSN: 1573-6105

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Article
Publication date: 10 August 2010

Fahimeh Babalhavaeji, Alireza Isfandyari‐Moghaddam, Seyed Vahid Aqili and Ali Shakooii

The present paper's purpose is to review the literature related to quality assessment and performance evaluation in academic libraries, whether empirical or theoretical, and to…

4224

Abstract

Purpose

The present paper's purpose is to review the literature related to quality assessment and performance evaluation in academic libraries, whether empirical or theoretical, and to extract key issues. It aims to explore which criteria exert a significant relationship with the academic libraries' performance quality; identify a set of criteria that appears to be useful for assessing the quality of academic libraries ITBS; and use these criteria to develop an instrument or evaluation checklist for evaluating the quality of academic libraries ITBS.

Design/methodology/approach

Related keywords such as “academic libraries research”, “academic libraries evaluation”, “academic libraries assessment” were searched on the web as well as some leading databases. In addition, available library resources as well as online book databases were consulted. Key issues were identified, categorized and discussed to develop the evaluation checklist suggested by the paper.

Findings

A number of indicators have been developed and tested in quality assessment studies debated in the paper. The literature reveals that evaluating ITBS in academic libraries should be considered to a greater extent and thus, more evaluation studies on the basis of validated tools are needed.

Research limitations/implications

The review does not claim to be comprehensive.

Originality/value

The paper can serve as a research roadmap concerning quality assessment of ITBS in academic libraries for researchers, managers, academic authorities and users.

Details

The Electronic Library, vol. 28 no. 4
Type: Research Article
ISSN: 0264-0473

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Article
Publication date: 13 November 2009

Faranak Mohsenzadeh and Alireza Isfandyari‐Moghaddam

The main purpose of this investigation is to define the status of the application of information technology in academic libraries located in Kerman, the center and largest city of…

7784

Abstract

Purpose

The main purpose of this investigation is to define the status of the application of information technology in academic libraries located in Kerman, the center and largest city of Kerman Province, Iran, and to understand the problems and difficulties in using information technology in these libraries.

Design/methodology/approach

The survey has covered 17 libraries belonging to Shahid Bahonar University, Kerman Medical University and Islamic Azad University. Two kinds of questionnaires were distributed to libraries – one for librarians and the other for library staff. The findings of the survey have been analyzed using SPSS software.

Findings

Results show that the level of application of information technology in Kerman academic libraries is acceptable but they should improve their status to match with ever increasing demand for better librarian services at universities; the most important problem and serious difficulty is the lack of educated librarians, which needs a suitable investment and planning; and, although about 70 percent of librarians in Kerman academic libraries have participated in related training courses, the most serious difficulty in using information technology is still the lack of educated librarians.

Practical implications

Based on the research findings, several suggestions for improvements can be made, for example: recruitment of multi‐skilled librarians familiar with information technologies related to the mechanism of work in academic libraries; planning and designing ongoing courses of information technology and related skills; promotion and introduction of various academic library services through compiling and publishing manuals and guides; equipping academic libraries with more information technology facilities; having a special budget for development of information technology infrastructure; overcoming telecommunication barriers and shortcomings to better use of information technology; and mechanization of all academic library departments to provide information services more optimally and speedily.

Originality/value

The research studies the rate of using information technologies in Iran as a developing country. Hopefully, uncovering and understanding some unknowns based on such investigations can help to address the digital divide within universities and countries governing them.

Details

The Electronic Library, vol. 27 no. 6
Type: Research Article
ISSN: 0264-0473

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Article
Publication date: 8 October 2024

Nagisetty Jyothi and Vijaya Kumar Avula Golla

This study aims to analyze the multi-slip effects of entropy generation in steady non-linear magnetohydrodynamics thermal radiation with Williamson nanofluid flow across a porous…

13

Abstract

Purpose

This study aims to analyze the multi-slip effects of entropy generation in steady non-linear magnetohydrodynamics thermal radiation with Williamson nanofluid flow across a porous stretched sheet near a stagnation point. Also, the qualities of viscous dissipation, Cattaneo–Christove heat flux and Arrhenius activation energy are taken into account. Thermophoresis, Brownian motion and Joule heating are also considered.

Design/methodology/approach

The Navier–Stokes equation, the thermal energy equation and the Solutal concentration equations are the governing mathematical equations that describe the flow and heat and mass transfer phenomena for fluid domains. By using the proper similarity transformations, a set of ordinary differential equationss are retrieved from boundary flow equations. The classical Runge–Kutta fifth-order algorithm along with the shooting technique is implemented to solve the obtained first order differential equations.

Findings

The study concludes that the temperature distribution boosting for thermal radiation, magnetic field and Eckert number where as the velocity and entropy generation escalate for the Williamson parameter, diffusion parameter and Brinkman number. The skin-friction and heat and mass transfer rate increases with the fluid injection. In addition, tabulated values of friction drag and rate of heat and mass transfer for various values of constraints are provided.

Originality/value

The comparison of the present results is carried out with the published results and noted a good agreement.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 19 July 2013

Alireza Isfandyari‐Moghaddam, Maryam Sedehi, Mozhdeh Dehghani, Leila Nemati‐Anaraki and Elaheh Hasanzadeh‐Dizaji

The purpose of this paper is to compare the attitude of the managers of libraries located at Iran, Tehran and Shahid Beheshti Medical Sciences Universities' training hospitals, on…

561

Abstract

Purpose

The purpose of this paper is to compare the attitude of the managers of libraries located at Iran, Tehran and Shahid Beheshti Medical Sciences Universities' training hospitals, on the status of information technology (IT) in the mentioned libraries.

Design/methodology/approach

This study employed a researcher‐made questionnaire. The managers of 40 hospital libraries of Iran, Tehran and Shahid Beheshti Universities formed the population of the research. To analyze the collected data, the statistical software SPSS (version 17) was used.

Findings

Results showed that 12.5 per cent of Tehran, 15.6 per cent of Iran and 25 per cent of Shahid Beheshti Universities library managers agreed, to a very large extent, on the application and development of IT and its tools and 93.7 per cent of the managers from all three hospital libraries deemed the application of IT most necessary. The managers believed that the greatest advantage of IT is concerned with the reduction of human efforts (59.4 per cent), and 100 per cent of the managers acknowledged the need for further promotion of their skills in a wide variety of IT issues. In total, 16.1 per cent at Tehran, 12.9 per cent at Iran and 29 per cent at Shahid Beheshti University considerably approved of formal education for the promotion of their librarians' skills.

Originality/value

This study is a step towards acknowledging the contribution, status, and value of hospital libraries to the health sector by the library managers in theory and practice, in the shadow of considering their librarians as network experts, information media and system designers, and technology experts.

Available. Open Access. Open Access
Article
Publication date: 23 September 2024

Prabhugouda Mallanagouda Patil, Bharath Goudar and Ebrahim Momoniat

Many industries use non-Newtonian ternary hybrid nanofluids (THNF) because of how well they control rheological and heat transport. This being the case, this paper aims to…

381

Abstract

Purpose

Many industries use non-Newtonian ternary hybrid nanofluids (THNF) because of how well they control rheological and heat transport. This being the case, this paper aims to numerically study the Casson-Williamson THNF flow over a yawed cylinder, considering the effects of several slips and an inclined magnetic field. The THNF comprises Al2O3-TiO2-SiO2 nanoparticles because they improve heat transmission due to large thermal conductivity.

Design/methodology/approach

Applying suitable nonsimilarity variables transforms the coupled highly dimensional nonlinear partial differential equations (PDEs) into a system of nondimensional PDEs. To accomplish the goal of achieving the solution, an implicit finite difference approach is used in conjunction with Quasilinearization. With the assistance of a script written in MATLAB, the numerical results and the graphical representation of those solutions were ascertained.

Findings

As the Casson parameter β increases, there is an improvement in the velocity profiles in both chord and span orientations, while the gradients Re1/2Cf,Re1/2C¯f reduce for the same variations of β. The velocities of Casson THNF are greater than those of Casson-Williamson THNF. Approximately, a 202% and a 32% ascension are remarked in the magnitudes of Re1/2Cf and Re1/2C¯f for Casson-Williamson THNF than the Casson THNF only. When velocity slip attribute S1 jumps to 1 from 0.5, magnitude of both F(ξ,η) and Re1/2Cf fell down and it is reflected to be 396% at ξ=1, Wi=1 and β=1. An augmentation in thermal jump results in advanced fluid temperature and lower Re1/2Nu. In particular, about 159% of down drift is detected when S2 taking 1.

Originality/value

There is no existing research on the effects of Casson-Williamson THNF flow over a yawed cylinder with multiple slips and an angled magnetic field, according to the literature.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 34 no. 12
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 29 November 2018

Jayarami Reddy Konda, Madhusudhana Reddy N.P., Ramakrishna Konijeti and Abhishek Dasore

The purpose of this paper is to examine the influence of magnetic field on Williamson nanofluid embedded in a porous medium in the presence of non-uniform heat source/sink…

124

Abstract

Purpose

The purpose of this paper is to examine the influence of magnetic field on Williamson nanofluid embedded in a porous medium in the presence of non-uniform heat source/sink, chemical reaction and thermal radiation effects.

Design/methodology/approach

The governing physical problem is presented using the traditional Navier–Stokes theory. Consequential system of equations is transformed into a set of non-linear ordinary differential equations by means of scaling group of transformation, which are solved using the Runge–Kutta–Fehlberg method.

Findings

The working fluid is examined for several sundry parameters graphically and in a tabular form. It is noticed that with an increase in Eckert number, there is an increase in velocity and temperature along with a decrease in shear stress and heat transfer rate.

Originality/value

A good agreement of the present results has been observed by comparing with the existing literature results.

Details

Multidiscipline Modeling in Materials and Structures, vol. 15 no. 2
Type: Research Article
ISSN: 1573-6105

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Article
Publication date: 18 October 2018

Shajitha C. and Abdul Majeed K.C.

The purpose of this study was to evaluate the content growth of institutional repositories (IR) in South India and analyse the type-wise growth of items available in these IRs and…

433

Abstract

Purpose

The purpose of this study was to evaluate the content growth of institutional repositories (IR) in South India and analyse the type-wise growth of items available in these IRs and also discuss the traits and trends exposed by them.

Design/methodology/approach

With the help of Registry of Open Access Repositories and Directory of Open Access Repositories (OpenDOAR), 39 repositories were located in south India. From these, Personal websites, the IRs that are currently not working and the repositories used for journal archiving were excluded. A total of 22 operational IRs at 21 institutions were identified for the study. Within a 15 month period, the data were collected from the 22 IRs twice for monitoring content growth.

Findings

The content of nearly all IRs have grown over the 15 month period, and the overall content growth rate was 7.82 per cent. Journal articles were the important content type of IRs, while thesis and conference papers were the next common. Moreover, item monographs exhibited the highest growth rate. Other categories, conference proceedings, and conference papers also exhibited a high growth rate. The present study revealed that Indian repositories were actively engaged in data curation activities, depositing a wide variety of items in their respective IRs. Overall, South Indian repositories exhibited a slow growth rate and tended to become inactive. Most South Indian Universities had not constituted the IRs, which led to the dominance of English language material in these IRs.

Research limitations/implications

The study was conducted only in South Indian IRs.

Originality/value

This is the first study in India, attempting to determine the type-wise growth of items in IRs.

Details

Global Knowledge, Memory and Communication, vol. 67 no. 8/9
Type: Research Article
ISSN: 0024-2535

Keywords

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