Abstract The mesh significantly influences the quality of numerical results in computational fluid dynamics (CFD) problems due to its correlation with turbulence models. In present paper a structured was generated using Gmsh and two semi-structured meshes were snappyHexMesh determine suitable distribution for simulating unsteady cavitation around plane convex hydrofoil. simulation conducted by ...

Archival and pop-up satellite archival tags have been widely used to study the movement dynamics in many marine pelagic species. Recent advances in light-based geolocation models have enabled better estimation of the geographical positions of tagged animals. In particular, TrackIt, a state-space model with the Kalman filter, uses only light data from a tag for estimating positions and does so i...

To analyze the influence of tapered form two upper vertices a rectangular cube placed in channel and impact insertion hollow center obstacle, three-dimensional study was executed using K-ω SST turbulence model. Different models were presented to examine features flow with Reynolds number Re=4×104. The kinetic energy, 2D 3D time-averaged streamlines, trace-lines, streamwise velocity profiles, pr...

Thermal jet flows are the type of flow frequently encountered in engineering applications. This article aims to determine if SST k-ω turbulence model, including Low-Reynold Correction, accurately estimates Nusselt number impinging flow; because this, computational results were compared with experimental studies. comparison was made on a line (r/D) from stagnation point exit. In this article, he...

The study concerns the simulation of the flow field and particle deposition in the upper human respiratory system. The numerical simulations are conducted using large eddy simulation (LES) and a Lagrangian particle tracking technique. To validate the numerical methods, the average gas velocity at the centerline and at different cross-sections in a constricted tube is compared with the experimen...

The effects of relative and absolute sea surface temperature (SST) on tropical cyclone potential intensity are investigated using the Massachusetts Institute of Technology (MIT) single-column model. The model is run in two modes: (i) radiative–convective equilibrium (RCE) to represent the convective response to uniform warming of the ocean as in a homogeneous aqua planet, and (ii) weak temperat...

This study investigated the performance of symmetric airfoils type NACA0012 numerically under different operating conditions. It has been assumed that involves steady state, non-compressive, and turbulent flows. The fluid was air. effect Reynolds number angle attack on lift drag coefficients, pressure distribution, velocity distribution investigated. ANSYS FLUENT used to solve numerical model b...

In order to reduce the additional resistance of high-speed amphibious vehicles, Flanks are designed on concave grooves. As a new drag reduction attachment, principle is analyzed and discussed in detail. this paper, HSAV model coupling tests performed based Reynolds-averaged Navier–Stokes method SST k−ω model. The accuracy numerical approach verified by series towing tests. Results show that wit...

Abstract In order to study the influence of deformations nozzle’s flexible sections on its inner wall’s heat transfer, this research uses two-dimensional axisymmetric model and k − ω SST turbulence numerically analyze tail flow field flexible-extendible nozzle under multiple working conditions. The transfer with without are simulated analyzed. simulation results show that when deformed, new sho...