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Analysis of turbo machinery systems are carried out using the multi-element unstructured framework within the CRUNCH CFD® code. Such framework provides the flexibility to tailor the grid to the dominant flow physics exhibited by components of the turbo machine while permitting efficient grid generation of the structurally complex geometries that are typically involved. An optimal combination of tetrahedral, prismatic, hexahedral and pyramidal cells are used in simulations of turbo machinery components such as inducers, rotors, stators, diffusers and volutes. A capability to predict cavitation in elements of the turbo machinery system exists as part of the multi-phase CRUNCH CFD® code framework and has been extensively validated against experimental data.
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Cross-sectional cut showing hybrid tetrahedral prismatic contiguous grid
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Particle streamlines in diffuser-volute colored by turbulent viscosity
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- Hosangadi, A., Ahuja, V., and Ungewitter, R.J., “Simulations Of Cavitating Inducer Flowfields,” 38th JANNAF Combustion Subcommittee (CS); Area: Turbomachinery for Space Launch Vehicle Propulsions Systems Session: Eglin Air Force Base, Sandestin FL, 8-12 April 2002.
- Ahuja, V., Arunajatesan, S.A., and Hosangadi, A., “Multi-Element Unstructured Methodology for Propulsive Applications,” 2001 ASME ICEM, NYC, NY, Nov. 11-16, 2001.
- Ahuja, V., Hosangadi, A. and Arunajatesan, S., “Simulations of Cavitating Flows Using Hybrid Unstructured Meshes,” Journal of Fluids Engineering, June 2001.
- Hosangadi, A., and Ahuja, V., and Lee, Y.T., "Simulations of Transonic Diffuser-Volute System Using Hybrid-Unstructured CFD," International Mechanical Engineering Congress & Exposition, Orlando, FL, November 5-10, 2000.
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