【摘要】 在WEN(功交换网络)中，常规的速度式和容积式功交换设备尺寸大、转速高，同时带液运行受限。功交换气波机是一种运用运动激波增压和膨胀波降温降压来实现高压流股与低压流股之间体积功直接交换的设备，具有结构简单、过程效率高和带液性能优良的优势，将其用作功交换网络的核心装备具有推广意义。文中利用气体动力学理论和计算流体力学手段，首先分析功交换机的工作原理和性能优势，之后对其进行性能研究。研究表明：功交换气波机在带液运行时具有良好的增压和降温特性，在低膨胀比下的等熵效率较高，引射率和低压入口流量随膨胀比的增大而增大，随增压比的增大而减小。定量分析气波换功技术在增压和引射方面的性能，对建立基于气动过程、精度更高的功交换气热力学模型具有重要意义。更多还原

【Abstract】 In the WEN(power exchange network), the conventional velocity-type and volumetric power exchange equipment has a large size and high rotational speed, and at the same time, the operation with liquid is limited. The power exchange gas wave machine is a kind of equipment that realizes the direct exchange of volumetric power between high-pressure and low-pressure flow stocks by using the motion excitation wave to increase the pressure and the expansion wave to reduce the temperature and pressure. It has the advantages of simple structure, high process efficiency and excellent performance with liquid and can be used as the core equipment of the power exchange network which has the significance of popularization. Using gas dynamics theory and ways of computational fluid dynamics, firstly the working principle and performance advantages of the power exchange machine were analyzed, and then its performance was studied. The results show that the power exchange gas wave machine has good pressurization and cooling characteristics when operating with liquid, high isentropic efficiency at low expansion ratio, and the elicitation rate and low-pressure inlet flow rate increase with the increase of expansion ratio and decrease with the increase of pressurization ratio. The performance of the gas wave power exchange technology in terms of pressurization and elicitation is quantitatively analyzed, which is of great significance for the establishment of a gas thermodynamic model for power exchange based on aerodynamic processes with higher accuracy.更多还原