In this paper, the fuzzy scalar median (FSM) is proposed, defined by using ordering of fuzzy numbers based on fuzzy minimum and maximum operations defined by using the extension principle. Alternatively, the FSM is defined from the minimization of a fuzzy distance measure, and the equivalence of the two definitions is proven. Then, the fuzzy vector median (FVM) is proposed as an extension of ve...

Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and...

Microfluidics is a multidisciplinary area founding applications in several fields such as the aerospace industry. Microelectromechanical systems (MEMS) are mainly adopted for flow control, micropower generation and for life support and environmental control for space applications. Microflows are modeled relying on both a continuum and molecular approach. In this paper, the compressible Navier–S...

a r t i c l e i n f o a b s t r a c t Numerical schemes for ideal magnetohydrodynamics (MHD) that are based on the standard finite volume method (FVM) exhibit pseudo-convergence in which irregular structures no longer exist only after heavy grid refinement. We describe a method for obtaining solutions for coplanar and near-coplanar cases that consist of only regular structures, independent of g...

Selecting an optimal bow configuration is critical to the preliminary design of polar ships. This paper proposes approach determine ships based on present numerical simulation and available published experimental studies. Unlike conventional methods, integrates both ice resistance calm-water with navigating time. A method icebreaking vessel going straight ahead in level developed using SPH (smo...

This paper presents a novel coupling discretization method for modeling multi-phase heat exchangers. In the method, MBM (Moving Boundary Method) is adopted as solver to solve each of FVCVs (Finite Volume Control Volume) divided by FVM Method). When all are solved, FVCV boundary values updated based on relationships FVCVs. The solving procedure initiated when starting HSF (Hot Source Fluid) and ...

INTRODUCTION About 30 percent of the worldwide death is due to cardiovascular diseases. Clinical simulation is a promising filed that can help to understand diseases, their nature and intervention's effects. The simulated models are flexible and make it easy to study the changes' effects and help to select the appropriate interventions. This narrative review aims to report common methods for th...

Three-dimensional computational analysis has been performed to investigate the melting time of phase change material (PCM) in a sinusoidal pipe inserted into another pipe. The other is filled with PCM and system heated from inner at different temperatures. main aim study control time. finite volume method (FVM) used solve time-dependent governing equations. Four cases are chosen for wall see ef...

Abstract Phase change materials (PCM) are wildly investigated and used in the fields of thermal energy storage control electronics. Numerical simulation is an important method research, development, analysis design PCM based systems. At present, there two main numerical methods for solid-liquid phase transition problems with natural convection: finite volume (FVM) on macroscopic scale continuit...