Images constructed from computed flowfields
Abstract
A method for constructing interferograms, schlieren, and shadowgraphs from ideal- and real-gas, two- and three-dimensional computed flowfileds is described. The computational grids can be structured or unstructured, and multiple grids are an option. The constructed images are compared to experimental images for several types of flow, including a ramp, a blunt-body, a nozzle, and a reacting flow. The constructed images simulate the features observed in the experimental images. They are sensitive to errors in the flowfield solutions and can be used to identify solution errors. In addition, techniques for obtaining phase shifts from experimental finite-fringe interferograms and for removing experimentally induced phase-shift errors are discussed. Both the constructed images and calculated phase shifts can be used for validation of computational fluid dynamics (CFD) codes.
- Publication:
-
AIAA, 17th Aerospace Ground Testing Conference
- Pub Date:
- July 1992
- Bibcode:
- 1992asgt.confR....Y
- Keywords:
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- Computational Fluid Dynamics;
- Computational Grids;
- Flow Distribution;
- Image Reconstruction;
- Real Gases;
- Three Dimensional Models;
- Interferometry;
- Reacting Flow;
- Schlieren Photography;
- Shadowgraph Photography;
- Two Dimensional Models;
- Instrumentation and Photography