3D/2D Aerodynamic program PARAD 2.2
(register No 950411 by RosAPO)
The code PARAD ("PARachute AeroDynamics")
is actually applicable to any bodies and perforated shells including parachutes.
The program is the component of the integrated
software and consists of 5 executive codes: 3D
and 2D Preprocessors,
Postprocessor and 3D
and 2D Processors (main computing codes). All the components are
user-friendly and ergonomic codes. The Processor is based on Lagrangian-Eulerian
method for perfect compressible fluid. In order to improve results in forebody
wake, where significant turbulence observed, the semiempirical turbulent
tension is taken into consideration in fitted mesh. The best results are
obtainable in range Mach number >0.5 for bluff bodies and Mach>0.1 for
streamlined ones.
The Preprocessor helps to create and edit computing
mesh using the body shape in flow. The shape is presnted as a 2D sketch
(polylines and B-splines) or 3D surfaces (DXF, DWG, 3DS or compatible CAD
formats). The mesh is generated preliminary as a regular one NxM with rectangular
cells and then can be quickly adapted to boundaries. The input list contains
also Mach number, specific heatings ratio, Reynolds number , type of task
(3D, axisymmetric, planar), time decrement (can be defined automatically).
An interface with MONSTR-2.2 helps to
import the shape of movable shell in aeroelastic case and export pressure
distribution back into structural code.
The Postprocessor provides the multiwindow
color analysis of results and displays
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pressure, density, Mach number and velocity components as
isolines and isograms;
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the same as a graph F(x), F(y) in any direction x,y in the
2D slice of 3D mesh;
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velocity vector field and grid;
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integral drag coefficients Cx, Cy, Cz;
The Processor realizes the numerical method and
is very fast. The solution is animated completly. The evolution graphs
of integral drag coefficients Cx(t), Cy(t), Cz(t) and main aerodynamic
functions are monitored by user and dynamic solution can be interrupted
at any time. The steady solution is obtainable as time limit or time-averaged
of dynamic one.
In order to run the software via Internet, please,
visit our Calculator
or fill in and submit the data form.
See List of Papers
on this software background and applications.
Screen of Postprocessor. The parachute-forebody system (Mach=2)
More examples of application? Click HERE to visit
Gallery.
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