Milestone Deliverable: FY18-Q1: Deploy production sliding mesh capability with linear solver benchmarking.

Technical Report · Fri Dec 01 04:00:00 EST 2017

DOI:https://doi.org/10.2172/1415012· OSTI ID:1415012

Domino, Stefan P. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This milestone was focused on deploying and verifying a “sliding-mesh interface,” and establishing baseline timings for blade-resolved simulations of a sub-MW-scale turbine. In the ExaWind project, we are developing both sliding-mesh and overset-mesh approaches for handling the rotating blades in an operating wind turbine. In the sliding-mesh approach, the turbine rotor and its immediate surrounding fluid are captured in a “disk” that is embedded in the larger fluid domain. The embedded fluid is simulated in a coordinate system that rotates with the rotor. It is important that the coupling algorithm (and its implementation) between the rotating and inertial discrete models maintains the accuracy of the numerical methods on either side of the interface, i.e., the interface is “design order.”

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1415012
• Report Number(s): SAND--2017-13715R; 659632
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY