Introduction to multi-point design strategies for aero engines
Paper in proceeding, 2020

Classic gas turbine design relies on the definition of a design point, and the subsequent assessment of the design on a range of off-design conditions. On the design point, both component sizing (e.g., in terms of physical dimensions or in terms of map scaling parameters) and a solution to the off-design governing equations are established. With this approach, it is however difficult to capture the contradicting requirements on the full operating envelope. Thus, practical design efforts rely on various multi-point design approaches. This paper introduces a simplified notation of such multi-point approaches via synthesis matching tables. It then summarizes two academic state-of-the-art multi-point design schemes using such tables in a comprehensible fashion. The target audience are students and engineers familiar with the basics of classic cycle design and analysis looking for a practical introduction to such multi-point design approaches. Application examples are given in terms of a simple turbojet and a typical geared turbofan as modeled in state-of-the-art academic cycle design and analysis efforts. The results of the classic design point approach are compared to those of multi-point approaches.

Geared turbofan

Thermodynamic cycle analysis

Multi-point design

Modelica

Author

Michael Sielemann

Clement Coic

Moritz Hübel

Xin Zhao

Chalmers, Mechanics and Maritime Sciences (M2), Fluid Dynamics

Konstantinos Kyprianidis

Mälardalens högskola

Proceedings of the ASME Turbo Expo

Vol. 6 v006t08a005
9780791884157 (ISBN)

ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, GT 2020
Virtual, Online, ,

Subject Categories

Architectural Engineering

Media and Communication Technology

Aerospace Engineering

DOI

10.1115/GT2020-14912

More information

Latest update

4/29/2021