Abstract
In order to study the influence of Proper Orthogonal Decomposition (POD) basis functions on the accuracy of flow field reconstruction, the velocity and pressure proper orthogonal bases were obtained respectively for the flow field on the stator interaction surface of hydraulic retarder under full-filled condition. The influences of the instantaneous image factors and rotational speed factors on the proper orthogonal basis were studied, and the flow field is predicted by means of proper orthogonal basis and surrogate model technology. Results show that both the spiting of snapshots database and the frequency of sampling snapshots have significant effects on flow field reconstruction accuracy by POD basis functions while the features of POD basis functions are immune to the speed of the rotor, and the flow field reconstruction based on POD basis is of certain accuracy.
| Translated title of the contribution | Flow field reconstruction accuracy influence of proper orthogonal decomposition basis functions in hydrodynamic retarder under full-filled operating condition |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1959-1968 |
| Number of pages | 10 |
| Journal | Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) |
| Volume | 49 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Nov 2019 |