Acoustic effects in the working fluid of vapor compressors create pressure and flow rate fluctuations that influence power consumption, volumetric efficiency, and noise level. Geometric tuning of compressor manifolds can utilize these pulsationsto improve performance and reduce noise. This article documents the development of a computer program, the Compressor Manifold Modeling and Analysis Program (CMMAP), that determines the acoustic response characteristics of a manifold system by cascadingseries and branch connected discrete elements into a system model. Plane wave theory is used for the element mathematical model, and transfer matrix theory is used for the coupling operations. CMMAP is a Windows-based program developed using MicrosoftVisual Basic 5.0, Professional Edition. Particular emphasis was placed on making the program user friendly and robust. The latest Windows 95/Windows NT graphical user interface standards were used. Modeling techniques, theoretical background, and programoperation were documented in a context sensitive Help program. Many features of the program may be applied to other component design software applications, including the techniques used to present results and generate, display, and edit model schematics.
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机译：蒸汽压缩机的工作流体中的声学效应会产生压力和流量波动，从而影响功耗，容积效率和噪音水平。压缩机歧管的几何调整可以利用这些脉动来改善性能并降低噪音。本文记录了计算机程序的开发，即压缩机歧管建模和分析程序（CMMAP），该程序通过级联串联并将分支的离散元素分支到系统模型中来确定歧管系统的声学响应特性。平面波理论用于单元数学模型，传递矩阵理论用于耦合操作。 CMMAP是使用MicrosoftVisual Basic 5.0专业版开发的基于Windows的程序。特别强调使程序对用户友好和健壮。使用了最新的Windows 95 / Windows NT图形用户界面标准。在上下文相关的帮助程序中记录了建模技术，理论背景和程序操作。该程序的许多功能可以应用于其他组件设计软件应用程序，包括用于呈现结果以及生成，显示和编辑模型示意图的技术。
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