March 12, 2020
In fluid dynamics, a vortex is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil.
Vortices are a major component of turbulent flow. The distribution of velocity, vorticity (the curl of the flow velocity), as well as the concept of circulation are used to characterize vortices. In most vortices, the fluid flow velocity is greatest next to its axis and decreases in inverse proportion to the distance from the axis.
In the absence of external forces, viscous friction within the fluid tends to organize the flow into a collection of irrotational vortices, possibly superimposed to larger-scale flows, including larger-scale vortices. Once formed, vortices can move, stretch, twist, and interact in complex ways. A moving vortex carries with it some angular and linear momentum, energy, and mass.
In this tutorial you will learn to simulate an Vortex Generator in 3D using Ansys CFX. You can download the mesh from this link
In this tutorial you will learn how to simulate a Flow through Porous Media using Ansys CFX.
The NACA four-digit wing sections define the profile by:
First digit describing maximum camber as percentage of the chord.
Second digit describing the distance of maximum camber from the airfoil leading edge in tenths of the chord.
Free surface is the surface of a fluid that is subject to zero parallel shear stress, such as the interface between two homogeneous fluids, for example, liquid water and the air in the Earth's atmosphere. Unlike liquids, gases cannot form a free surface on their...
In this tutorial, you will learn how to simulate a blower (unsteady) using Mesh Motion with Ansys Fluent. Please download the mesh.
In this tutorial you will learn how to simulate a Blowe using Ansys Fluent through multiple reference frame.
In this tutorial you will learn how to simulate a multiphase simulation through lockExchange tutorial that comes by default with OpenFOAM.
In this video you will learn how to simulate motorBike tutorial using OpenFOAM with simpleFoam solver.
In this tutorial you will learn how to create an animation using OpenFOAM through Paraview (paraFoam Command).
Stay Up to Date With The Latest News & Updates
Help us keep growing
CFD.NINJA is financed with its own resources, if you want to support us we will be grateful.
Join Our Newsletter
Subscribe to receive emails with detailed information related to the CFD.
Subscribe to our social networks to receive notifications about our new tutorials