This tutorial sets up simulations of thermally inductively coupled plasma at atmospheric pressure including effects of radiation heat transfer and conjugated flow/wall heat transfer. The tutorial employs the power of user subroutines to define the properties of the Argon gas found in the plasma tube. The relative permittivity, electrical conductivity, specific heat and thermal conductivity of the Argon gas are set using the user subroutines.
CFD-VisCART is an automated 3D viscous unstructured adaptive Cartesian grid generation tool for handling complex geometries. This tutorial describes the steps for generating a Cartesian grid with different mesh resolutions on various geometries using CFD-VisCart.
The steady state conductive heat transfer to the air-gap between infinitely long concentric thick-walled cylinders is modeled and compared with an analytical solution. This is a step-by-step guided introductory tutorial for setting up a heat transfer model in CFD-ACE+.
Lorentz force is the force
exerted on a charged particle in an electromagnetic field. Lorentz forces can be used
to control flow separation. In the example of flow separation over a
cylinder, the application of Lorentz force in a direction tangential to
the surface of the cylinder results in moving the separation point
rearward on the cylinder surface. This causes a reduction in the drag
over the cylinder.
In this tutorial, the geometry of a bent pipe is optimized. The bent section of the pipe must provide 90-degree change of direction for a fluid flowing through it. The objective is to determine the bend radius R that provides the minimal (optimal) pressure drop through the pipe.
The objective of this tutorial is to find the optimum bend radius R such that the pressure drop in the pipe is minimum for given a two-dimensional pipe with fixed velocity inlet.
The problem to be simulated is the inviscid, subsonic flow of air past a cylinder. The diameter of the cylinder is 1 m. The flow has a free-stream Mach number,M∞ , of 0.177. The numerical model employs only a semicylinder due to the symmetry of the flow pattern around the cylinder.
Incompressible subsonic flow past a two-dimensional backward-facing step is modeled to estimate the laminar reattachment length (i.e., the point where the separation bubble disappears on the channel floor behind the step). This is a step-by-step guided introductory tutorial for setting up a flow model in CFD-ACE+.
Low Mach preconditioning is a way to accelerate convergence towards steady state solution by scaling the disparate eigenvalues of a system to the same order of magnitude for time-marching schemes. The preconditioning matrix applied in FASTRAN is chosen in such a way to provide an efficient solution for both incompressible (through artificial compressibility) and low Mach flows (through pseudo-acoustic speeds). This feature in FASTRAN is demonstrated using steady flow simulation over a 2D cylinder at a freestream Mach number of 0.0004.
