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Article
Publication date: 1 January 2014

Sofen K. Jena, Swarup K. Mahapatra and Amitava Sarkar

The current study aims to address the interaction between participating media radiation with thermo-gravitational convection of an electrically conducting fluid enclosed within a…

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Abstract

Purpose

The current study aims to address the interaction between participating media radiation with thermo-gravitational convection of an electrically conducting fluid enclosed within a tilted enclosure under an externally imposed time-independent uniform magnetic field.

Design/methodology/approach

The differentially heated boundaries of the tilted enclosure are considered to be diffuse, gray and the enclosed fluid is assumed to be absorbing, emitting and isotropically scattering. The Navier-Stokes equations, meant for magneto convection are solved using modified MAC method. Gradient dependent consistent hybrid upwind scheme of second order is used for discretization of the convective terms. Discrete ordinate method, with S8 approximation, is used to model radiative transport equation in the presence of radiatively active medium.

Findings

Effect of uniform magnetic field with different magnitudes and orientations of cavity has been numerically simulated. The effect of participating media radiation has been investigated for different optical thicknesses, emissivities, scattering albedos and Planks number. The results are provided in both graphical and tabular forms. The flow lines, isotherms bring clarity in the understanding of flow behaviour and heat transfer characteristics.

Originality/value

Despite the idealized nature, the present study is quite essential to understand the cumbersome physics of realistic problem.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 24 no. 1
Type: Research Article
ISSN: 0961-5539

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Case study
Publication date: 27 January 2015

Vishal Gupta

The Performance Management at IRD Corporation case series is designed to be an in-depth study of performance appraisal in the R&D context. The case series can be used as a…

Abstract

The Performance Management at IRD Corporation case series is designed to be an in-depth study of performance appraisal in the R&D context. The case series can be used as a platform for discussing the rationale of performance appraisal system, system design and implementation, the differences between R&D and other work contexts (manufacturing, services, etc.), and the challenges involved in R&D management. This case revolves around the Chairman of IRD Corp and his dilemmas, providing an insight to the participants into the challenges of performance management and also R&D management. The series highlights the complex dilemmas associated with managing performance and the necessity of having a new performance evaluation system.

Details

Indian Institute of Management Ahmedabad, vol. no.
Type: Case Study
ISSN: 2633-3260
Published by: Indian Institute of Management Ahmedabad

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