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...

a constitutive model based on two–dimensional unstructured galerkin finite volume method (gfvm) is introduced and applied for analyzing nonlinear behavior of cracked concrete structures in equilibrium condition. the developed iterative solver treats concrete as an orthotropic nonlinear material and considers the softening and hardening behavior of concrete under compression and tension by using...

The current two-dimensional (2D) numerical study presents the melting phenomenon and heat transfer performance of nanocomposite phase change material (NCPCM) based sink. Metallic nanoparticles (copper: Cu) different volume fractions 0.00, 0.01, 0.03, 0.05 were dispersed in RT–28HC, used as a PCM. Transient simulations with conjugate melting/solidification schemes formulated using finite–volume–...

This paper will address the problem of time marching function approximated solutions inherent in emerging meshfree Computational Fluid Dynamics (CFD) solution techniques. The numerical solutions of partial differential equations (PDEs) of CFD has been dominated by either finite difference methods (FDM), finite element methods (FEM), and finite volume methods (FVM). These methods can be derived ...

Florian Haider, Jean-Pierre Croisille, Bernard Courbet. Efficient Implementation of High Order Reconstruction in Finite Volume Methods. J. Fořt, J. Fürst, J. Halama, R. Herbin and F. Hubert. Finite Volumes for Complex Applications : problems and perspectives, Jun 2011, Prague, Czech Republic. Springer, Springer proceedings in mathematics, vol. 4, pp.553-562, 2011, <10.1007/978-3-642-20671-9 58>...

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...

in this paper, an enhanced computational code was developed using finite-volume method for solving the incompressible natural convection flow within the cylindrical cavities. grids were generated by an easy method with a view to computer program providing. an explicit integration algorithm was applied to find the steady state condition. also instead of the conventional algorithms of simple, sim...

in this work, the steady and laminar mixed convection of nanofluid in horizontal concentric annulus withrotating inner cylinder is investigated numerically. the inner and outer cylinders are kept at constanttemperature ti and to respectively, where ti>to. the annular space is filled with alumina-water nanofluid.the governing equations with the corresponded boundary conditions in the polar coord...

This research numerically surveys the effects of several main parameters an agitated anaerobic digester on mixing rate and power input. The numerical simulation is handled applying finite volume method (FVM), it validated with available experimental data. results indicate that doubling blade length enhances by 39.9% makes input enhance 13.5 times; increasing number blades (from 4 to 6) improves...

Finite Volume Methods (FVM) are high quality methods for solving conservative/hyperbolic partial differential equations (PDEs). A popular class of high-resolution utilize a nonlinear combination low order and via flux limiting functions. Another is the weighted essentially non-oscillatory (WENO) schemes. Here, focus on An experimental finite volume (FV) semi-discrete solver systems hyperbolic P...