Abstract The paper focuses on implementing the wall model developed by Manhart, in Reynolds Averaged Navier - Stokes (RANS) turbulence models used field of Computational Fluid Dynamics (CFD). This considers influence streamwise pressure gradient addition to existing usual CFD codes. In present work, two RANS numerical simulations are carried out using k-ω Shear Stress Transport (SST) an asymmet...

We calibrate the k-ωSST turbulence model for free surface flows in channel or on slope using machine learning techniques. To model, an experiment is carried out inclined rectangular research chute. In experiment, pressure values flow are measured at different distances from bottom; after transforming data, velocity profile obtained. The calibrated based experimental data Nelder-Mead optimizatio...

In order to measure flow rate in open channels, including irrigation hydraulic structures are used with a relatively high degree of reliance. Venturi flumes among the most common and efficient type, they can discharge using only water level at specific point within converging section an empirical relationship. There have been limited number attempts simulate venturi flume computational fluid dy...

The study of aerosol dispersion in indoor environments is essential to understanding and mitigating airborne virus transmission, such as SARS-CoV-2. Computational Fluid Dynamics (CFD) has emerged a valuable tool for investigating dispersion, providing an alternative costly experimental methods. In this study, we investigated the performance four (4) Reynolds-averaged Navier-Stokes (RANS) turbul...

The present work is to evaluate the performance of RANS turbulence models for simulating regular wavepropagation over a submerged breakwater using open-source Computational Fluid Dynamics (CFD) software OpenFOAM. numerical results four (k-ε model, k-ω SST buoyancy-modified and stabilized model) are compared with published experimental data free surface elevations velocities at gauges. Moreover,...

To select a more suitable turbulence model to study tire aerodynamics, the characteristics of deformed profile 185/65 R14 passenger were reproduced using 3D printing technology. Based on distance from automobile chassis ground, partially loaded with height 150 mm was selected in this paper, and surface pressure coefficient determined wind tunnel test. A computational fluid dynamics (CFD) establ...

This paper presents the comparison of numerical simulation results and wind tunnel experiment for compound WIG's wing. Numerical was performed in ANSYS Fluent software. The choice turbulence model computational mesh parameters, including resolution boundary layer, are substantiated. Comparison showed good convergence middle density about 7 million cells first layer height 0.0001 m. Additional s...

Somatostatin (SST) is a neuropeptide involved in several central processes. In hippocampus, SST hyperpolarizes CA1 pyramidal neurons and augments the K+ M current (IM). However, the limited involvement of IM at resting potential in these cells suggests that the peptide also may modulate another channel to hyperpolarize hippocampal pyramidal neurons (HPNs). We studied the effect of SST on nonina...

This paper presents finite volume method based on Reynolds-averaged Navier-Stokes (RANS) equations for computation of 2D axisymmetric flow around bare submarine hull using unstructured grid. The body used for this purpose is a standard DREA (Defence Research Establishment Atlantic) bare submarine hull. Shear Stress Transport (SST) k-ω model has been used to simulate turbulent flow past the hull...

For analyzing the flow field and topological structure of hemispherical parachute in low angles of attack, a fluid-structure interaction (FSI) simulation technique is established to decide the shape of the hemispherical parachute during terminal descent. In the fluid simulation, the semi-implicit method for pressure-linked equations consistent (SIMPLEC) algorithm is introduced to solve shear st...