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[FXC-4771] Bet metrics #60

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piotrkluba merged 2 commits into from
Jan 26, 2026
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[FXC-4771] Bet metrics #60

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bet metrics
marcvivesmassana Jan 23, 2026
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marcvivesmassana Jan 26, 2026
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18 changes: 18 additions & 0 deletions docs/02.simulation-setup/04.output/02.outputs-list/00.output-fields.md
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Expand Up @@ -66,6 +66,24 @@ It should be noted that the relative velocity is zero on no-slip walls that are
| `kOmegaSST_hybridModel` | Hybrid RANS-LES output for kOmegaSST solver (supports both DDES and ZDES) | Non-dimensional |
| `localCFL` | Local CFL number | Non-dimensional |

### BET Metrics Output Variables

The `betMetrics` and `betMetricsPerDisk` output fields provide Blade Element Theory (BET) metrics for analyzing rotor and propeller performance. These fields are available when using BET models in volume zones. The `betMetrics` field includes data from all BET disks with possible overlapping, while `betMetricsPerDisk` provides separate outputs for each disk to avoid overlap.

The following variables are included in the betMetrics output:

1. **`VelocityRelative`** – Relative velocity with respect to the rotating reference frame (non-dimensional).

2. **`AlphaRadians`** – Local angle of attack in radians.

3. **`CfAxial`** – Axial aerodynamic force coefficient.

4. **`CfCircumferential`** – Circumferential aerodynamic force coefficient.

5. **`TipLossFactor`** – Factor to model the effect of blade tip.

6. **`LocalSolidityIntegralWeight`** – Local solidity multiplied by the integral weight.

### Hybrid RANS-LES Output Variables

The `SpalartAllmaras_hybridModel` and `kOmegaSST_hybridModel` output fields provide diagnostic variables for hybrid RANS-LES simulations. The specific variables included depend on whether you're using **DDES** (Delayed Detached Eddy Simulation) or **ZDES** (Zonal Detached Eddy Simulation) as the shielding function.
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