Consistent reduced order modeling for wind turbine wakes using variational multiscale method and actuator line model
Bibliographic record
Abstract
We present a consistent ALM-VMS-ROM framework for the efficient and accurate reduced-order modeling (ROM) of wind turbine wakes. The method leverages a finite element discretization with a POD-Galerkin approach for constructing ROM. A reduced basis space includes the projection of VMS stabilization terms, ensuring numerical stability without requiring additional stabilization techniques. To further enhance computational efficiency, we implement a mesh-based hyper-reduction technique for predicting the wake behavior behind the NREL 5 MW wind turbine, where the rotor is modeled using the Actuator Line Method (ALM). Using fine-mesh snapshots, the wake dynamics are accurately reconstructed with only 10 POD modes, while employing a coarse mesh in both the reconstruction and prediction phases. The proposed framework achieves a computational speed-up of nearly 13×compared to the fine-mesh full-order model (FOM), while maintaining high accuracy in power production and wake deficit predictions up to 7D downstream.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".