نتایج جستجو برای: bejan number

تعداد نتایج: 1168369  

Journal: :International Journal of Energy Economics and Policy 2022

Waste heat recovery (WHR) technologies have become vital to promote efficient operation in energy systems. The present investigation presents a bibliometric analysis of the research trends WHR field last decade (2010-2020). study implements advanced methodologies gather relevant information for interested readers on this topic. Results indicated that registered more than 14,000 articles selecte...

This study analyzes the unsteady Rivlin-Ericksen fluid and irreversibility of exponentially temperature dependent variable viscosity of hydromagnetic two-step exothermic chemical reactive flow along the channel axis with walls convective cooling. The non-Newtonian Hele-Shaw flow of Rivlin-Erickson fluid is driven by bimolecular chemical kinetic and unvarying pressure gradient. The reactive flui...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1391

abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...

Journal: :Mathematics 2023

A mathematical investigation of a thermodynamical system linked with energy management and its impact on the environment, especially climate change, is presented in this study. In regard, numerical flow heat transfer hydromagnetic third-grade liquid through porous medium. The permeability medium electrical conductivity fluid are assumed to be temperature functions. appropriate formulations for ...

Journal: :Mathematics 2022

Energy management and heat control whenever a reactive viscous fluid is the working medium has been one of greatest challenges encountered by many in field chemical industrial engineering. A mathematical approach to thedetermination critical points beyond which environment becomes hazardous presented present investigation together with entropy generation analysis that guarantees efficient expen...

Journal: :Physics of Fluids 2022

Bi-viscosity Bingham plastic fluids are used to understand the rheological characteristics of pigment–oil suspensions, polymeric gels, emulsions, heavy oil, etc. In many industrial and engineering problems involving high-temperature situation, a linear density-temperature variation is inadequate describe convective heat transport. Therefore, nonlinear flow bi-viscous fluid (BVBF) through three ...

Journal: :Mathematical Problems in Engineering 2021

The thermal management of a system needs an accurate and efficient measurement exergy. For optimal performance, entropy should be minimized. This study explores the enhancement exchange in stream Eyring–Powell fluid comprising nanoparticles saturating vertical oriented dual cylindrical domain with uniform conductivity viscous dissipation effects. A symmetrical sine wave over walls is used to in...

Journal: :Physics of Fluids 2023

The present numerical work examines the effect of fractional order parameter on heat transfer and entropy generation for a thermo-magnetic convective flow nanofluid (Cu-water) in square porous enclosure that contains semi-circular bottom wall. Darcy–Brinkmann–Forchheimer model is utilized to evaluate momentum media, Caputo-time derivative term introduced as well energy equation. Further, non-di...

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