The current research presents a numerical investigation of the mixed convection inside horizontal rectangular duct combined with an open trapezoidal cavity. region in bottom wall cavity is heated by using two discrete heat sources. cold airflow enters horizontally at fixed velocity and constant temperature. All other walls are adiabatic. Throughout this study, four various cases were investigat...

Due to the presence of corner eddies that change in number and pattern, the classical one-sided lid-driven cavity problem has been found to be particularly suitable to study various aspects of the performance of solution algorithms for incompressible viscous flows. More recently, the flow induced by the motion of two facing walls (two-sided lid-driven cavity) has also been investigated by Kuhlm...

It is well known that any viscous fluid flow near a corner consists of infinite series of eddies with decreasing size and intensity, unless the angle is larger than a certain critical angle [28]. The objective of the current work is to simulate such infinite series of eddies occurring in steady flows in domains with corners. The problem is approached by high-order finite element method with exp...

Common modal decomposition techniques for flowfield analysis, data-driven modeling and flow control, such as proper orthogonal (POD) dynamic mode (DMD) are usually performed in an Eulerian (fixed) frame of reference with snapshots from measurements or evolution equations. The description poses some difficulties, however, when the domain mesh deforms time as, example, fluid-structure interaction...

Large-eddy simulations of the turbulent flow in a lid-driven cubical cavity have been carried out at a Reynolds number of 12000 using spectral element methods. Two distinct subgrid-scales models, namely a dynamic Smagorinsky model and a dynamic mixed model, have been both implemented and used to perform long-lasting simulations required by the relevant time scales of the flow. All filtering lev...

Thermal flow phenomena in a double lid–driven enclosure have many potential applications numerous engineering domains. The present article theoretically investigates the heat transfer analysis of power-law fluid hexagonal cavity embedded with square obstacle. upper and lower lid walls are considered heated along centered square, while rest thermally insulated. In addition, horizontal uniformly ...

mixed convection fluid flow and heat transfer of water-al2o3 nanofluid inside a lid-driven square cavity has been examined numerically in order to find the optimal distribution of discrete heat sources on the wall of a cavity. the effects of different heat source length, richardson number and grashof number on optimal heat source location has been investigated. moreover, the average nusselt num...

In this study, an adaptive neuro-fuzzy inference system (ANFIS) was developed to determine the Nusselt number (Nu) along a wavy wall in a lid-driven cavity under mixed convection regime. Firstly, the main data set of input/output vectors for training, checking and testing of the ANFIS was prepared based on the numerical results of the lattice Boltzmann method (LBM). Then, the ANFIS was develope...