Is CFD better than ANSYS

ANSYS CFD-Post allows a varied qualitative representation of the calculated results in order to recognize and visualize the relevant flow effects. Depending on the selected visualization, the representation takes place on surfaces or in volume. The user can control the lighting, the surface structure (rendering), the transparency, the labeling and other display-specific properties. The representations can be exported in common image formats (PNG, JPEG, BMP, PS, EPS, etc.) as well as 3D formats (VRML, ANSYS Viewer).

Levels can be defined in ANSYS CFD-Post normal to the axis or in any orientation using a base point and normal direction or by specifying three points. The extent of the levels can be limited to circular and rectangular.

Surfaces In addition to levels, ANSYS CFD-Post can also have more diverse forms for evaluation. For this purpose, surfaces can be imported in ASCII format or generated as isosurface of a spatial coordinate or solution size. For example, a cylinder surface corresponds to the isosurface with a constant radius, and the phase boundary is characterized by the isosurface of the mean material fraction.

Streamlines represent the path of a massless particle through the flow field. The representation in ANSYS CFD-Post allows you to select the start or target area of ​​the streamlines, their length, shape and color as well as the color scale. The representation can take place in volume and on levels. Furthermore, the path of the massless particles can be analyzed by moving symbols on the streamlines.

Vectors locally indicate the size and direction of a vector quantity (speed, pressure gradient). It is possible to determine the location and number of vectors as well as their appearance (length, shape, color, color scale) on a surface or in a volume. In addition, tangential and normal projections of the vectors on surfaces can be displayed.

Contour plots represent the course of a local variable (pressure, speed) on a surface by means of colored ribbons. The number and color of the colored ribbons can be selected user-specifically. By hiding the colored bands and showing the associated boundary lines, views with isolines can be generated

Rendered volume can be used in ANSYS CFD-Post to visualize scalar quantities in volumes. The transparency within the volume is varied depending on the value of a scalar variable (for example smoke gas concentration). This representation with partial lack of transparency can also be colored with the color gradient of a further variable (for example toxicity of the smoke).

Diagrams represent the quantitative relationship between two variables. In general, a spatial evaluation is carried out along a defined straight line (for example pressure versus height). However, ANSYS CFD-Post also offers the option of displaying transient processes as a function of time and frequency (Fast Fourier Transformation).

Animations can show temporal changes in a flow as a film, for example shedding eddies or particle trajectories. All objects used can be animated, even in stationary simulations, for example the lengths of streamlines, the position of surfaces or the value of an isosurface. At the same time, the camera perspective can also change ("flight through geometry"). Animation can often be used to better illustrate geometry and flow than individual images. Animations can be saved as MPEG4, WMV, AVI or MPEG1 up to an HD1080 resolution.