Preface

Turbomachinery describes machines that transfer energy between a rotor and a fluid. Some of these machines include turbines, compressors, and pumps. Turbomachinery is important for industry and is critical in many different types of systems. This book discusses some turbomachinery problems and solutions. It is organized into two sections.

Section 1, "Turbomachinery Problems" includes three chapters: "Solid Particle Erosion", "Periodic Instabilities in a Specific Low-speed Pump Working as a Turbine", and "The Influences of Combined Distortions on Fan Performance". Section 2, "Turbomachinery Solutions" consists of two chapters: "Electrification for Aero-Engines: A Case Study of Modularization in New Product Development" and "Principles of Diagnosing: The Technical Condition of the Bearings of the Gas Turbine Engine Supports Using Rhythmogram and Scatterogram".

*Advances in Turbomachinery* is a current and well-rounded resource for students and practicing engineers in mechanical and aeronautical engineering as well as readers interested in turbomachinery problems and solutions.

> **Melih Cemal Kushan** Professor, Department of Aeronautical Engineering, Eskisehir Osmangazi University, Eskisehir, Turkey

> **Isil Yazar** Associate Professor, Department of Aeronautical Engineering, Eskisehir Osmangazi University, Eskisehir, Turkey

Section 1

Turbomachinery Problems

**1**

Section 1
