Investigation on Dynamic Characteristics of the Reed Valve in Compressors Based on Fluid-Structure Interaction Method

Abstract

The flow in the gap between the reed and the valve seat has a significant influence on the dynamic characteristics of the reed valve used in reciprocating compressors. The fluid–structure interaction (FSI) method is an effective method for studying reciprocating compressors. A three-dimensional FSI model of a reciprocating compressor with a reed valve is established in this paper, which has an important influence on the flow rate characteristic of reciprocating compressors. Furthermore, an experimental investigation is implemented to verify the FSI model. Based on the established FSI model, the pressure distribution on the reed valve surface is identified by varying the height of the suction valve limiter and the rotational speed of the compressor, which has an important effect on the dynamic characteristics of the reed valve. Although the low-pressure region, due to the Bernoulli effect on the surface of the reed, hinders the rapid opening of the valve to some extent, it is obviously beneficial to the timely closure of the valve and increases the volumetric efficiency of the compressor. Moreover, the optimal height of the valve limiter and the appropriate rotational speed of the compressor are obtained.

Special Issue on Thermodynamic and Exergy Analyses of Cooling, Power, and Energy Systems

“…The second paper, authored by He et al [6], proposed a new method to investigate the refrigerant mass flow in a refrigerator using a p-V diagram. Wang et al [7] investigated the dynamic characteristics of the reed valve in compressors based on the fluid-structure interaction method to improve the thermal performance of a compressor.…”

Research on Dynamic Characteristics of Canopy and Column of Hydraulic Support under Impact Load

“…Based on the fluid-structure interaction theory, Liang et al [16] analyzed the structural characteristics of the pipeline system and expounded the dynamic change law of pipeline vibration caused by gas-liquid two-phase flow. Wang et al [17] established the fluid-structure interaction model of the reciprocating compressor with reed valve and studied the dynamic characteristics of reed valve and the flow characteristics of the reciprocating compressor. Guo et al [18] discussed the mechanism of friction, Poisson, and connection coupling, established the fluid-structure interaction model of the pipeline system, and revealed the dynamic characteristics of the pipeline system under different supports.…”

Desenvolvimento de modelo computacional para simulação de partida e tombamento de compressores alternativos

“…Com elevado nível de complexidade, os modelos 3D de iteração fluido-estrutura podem ser empregados para simulação de compressor alternativos, como apresentado nos trabalhos de Gonzalez et al (2016), Wang et al (2021) e Gasche et al (2016). Estes modelos empregam ferramentas de análise estrutural para determinação do movimento das válvulas acopladas com modelo de escoamento de fluidos 3D.…”