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Compromising Solution of Geometric Programming Problem with Bounded Parameters

Journal of the Operations Research Society of China 2017年第3期5卷 377-390页

作者： mrinal jana Geetanjali Panda University of Petroleum and Energy Studies Dehradun 248007India Department of Mathematics Faculty of MathematicsIndian Institute of Technology KharagpurKharagpur 721302West BengalIndia

This paper addresses a geometric programming problem,where the objective function and constraints are interval-valued *** concept of acceptable feasible region is introduced,and a methodology is developed to transform this model to a general optimization problem,which is free from interval ***ship between the solution of the original problem and the transformed problem is *** methodology is illustrated through numerical *** by the proposed method and previous methods are analyzed.

关键词： Interval-valued function Partial ordering Nonlinear programming Geometric programming Decision making

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Convection of Radiating Gas in a Vertical Channel through Porous Media

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World Journal of Mechanics 2011年第6期1卷 275-282页

作者： mrinal jana Sovan Lal Maji Sanatan Das Rabindranath jana 不详

The free convection flow of radiating gas between two vertical thermally conducting walls through porous medium in the presence of a uniform gravitational field has been studied. Closed form solutions for the velocity and temperature have been obtained in the optically thin limit case when the wall temperatures are varying linearly with the vertical distance. It is observed that the fluid velocity increases and the temperature difference between the walls and the fluid decreases with an increase in the radiation parameter. It is also observed that both the fluid velocity and temperature in the flow field increase with an increase in the porosity parameter. It is found that the fluid velocity decreases while the temperature increases with an increase in the thermal conductance of the walls. Further, it is found that radiation causes to decrease the rate of heat transfer to the fluid, thereby reducing the effect of natural convection.

关键词： Radiation Porous Medium Heat Transfer and Thermal Conductance

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Survey of control techniques to alleviate repercussions of shock-wave and boundary-layer interactions

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Advances in Aerodynamics 2022年第1期4卷 569-598页

作者： Tamal jana mrinal Kaushik Department of Aerospace Engineering JAIN(Deemed-to-be University)Bangalore560069India Department of Aerospace Engineering Indian Institute of Technology KharagpurKharagpur721302India

The primary focus of the present survey is to categorize the results of various investigations on the Shock/Boundary-Layer Interactions(SBLIs),their repercussions,and the effective ways to control *** interactions of shock waves with the boundary layer are an important area of research due to their ubiquity in several applications ranging from transonic to hypersonic ***,there is a need for a detailed inspection to understand the phenomena to predict its characteristics with certain *** this in mind,this article presents some key features of the physical nature of SBLIs,their consequences,and the control techniques in a sequential manner;in particular,the passive control techniques for the supersonic and hypersonic intakes are reviewed in detail.

关键词： Oblique shock Boundary layer Separation bubble Surface bump Porous cavity Micro-vortex generator(MVG) Plasma jet

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Hydrodynamic Flow between Two Non-Coincident Rotating Disks Embedded in Porous Media

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World Journal of Mechanics 2011年第2期1卷 50-56页

作者： Rabindranath jana mrinal Maji Sanatan Das Sovan Lal Maji Swapan Kumar Ghosh 不详

Hydrodynamic viscous incompressible fluid flow through a porous medium between two disks rotating with same angular velocity about two non-coincident axes has been studied. An exact solution of the govern-ing equations has been obtained in a closed form. It is found that the primary velocity decreases and the sec-ondary velocity increases with increase in porosity parameter to the left of the z-axis and the result is re-versed to the right of the z-axis. It is also found that the torque on the disks increases with increase in either rotation parameter or porosity parameter. For large rotation, there exist a thin boundary layer near the disks and the thickness of this boundary layer decreases with increase in porosity parameter.

关键词： Hydrodynamic Non-Coincident Disks Porous Medium Boundary Layer Thickness Rotation Parameter

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