Príspevok
Modelling the Dynamics of Ring Plate Valves in Reciprocating Compressors Using Coupled CFD-FEM Simulations
DOI: 10.18462/iir.compr.2021.0402
Sekcia: Reciprocating compressors 2
Stav prijatia: Príspevok prijatý
Autori
| Meno | Organizácia | |
|---|---|---|
| Åsmund Ervik, Dr. | SINTEF Energy Research | |
| Afaf Saai, Dr. | SINTEF Industry | |
| Torodd Berstad, Dr. | SINTEF Industry, Norwegian University of Science and Technology | |
| Ole Meyer, Dr. | SINTEF Energy Research | |
| Tatusya Oku, Dr. | Mayekawa MFG. Co., Ltd. | |
| Takuma Tsuji, Dr. | Mayekawa MFG. Co., Ltd. | |
| Kazuhiro Hattori, Dr. | Mayekawa MFG. Co., Ltd. | |
| Kazuya Yamada, Dr. | Mayekawa MFG. Co., Ltd. | |
| Virgile Delhaye, Dr. | SINTEF Industry | |
| Petter Nekså, Dr. | SINTEF Energy Research |
Abstrakt
Improving the efficiency and reliability of valves in the reciprocating compressor is important for future refrigeration systems. A model for valve dynamics that links the fluid- and solid-dynamic effects can give fundamental insight and enable improvement of design. We developed such a model that combines computational fluid dynamics with finite element modeling. By computing gas flows and pressures during the valve actuation cycle using CFD, and computing the corresponding plate motion and impact at opening/closing using FEM, we are able to predict salient features of this system. We find that the damping at impact strongly affects the valve motion and the stress and strain on the ring plate. We observe that inhomogeneities in the pressure acting on the valve plate lead to small changes in plate orientation, that can be amplified through the impact into tumbling motion. Our findings are compared against experimental measurements obtained from instrumenting a real compressor.
Kľúčové slová
Reciprocating compressor
Ammonia
Natural working fluid
Valve dynamics
Ring plate valve
Computational fluid dynamics
Finite element modelling