Coanda Flow Characterization on Base Bleed Configurations Using Global Stability Analysis

Martínez-Cava Aguilar, Alejandro and Valero Sánchez, Eusebio and Vicente Buendia, Javier de and Paniagua, Guillermo (2019). Coanda Flow Characterization on Base Bleed Configurations Using Global Stability Analysis. In: "AIAA Scitech 2019 Forum", 7-11 January 2019, San Diego, California. https://doi.org/10.2514/6.2019-0881.

Description

Title: Coanda Flow Characterization on Base Bleed Configurations Using Global Stability Analysis
Author/s:
  • Martínez-Cava Aguilar, Alejandro
  • Valero Sánchez, Eusebio
  • Vicente Buendia, Javier de
  • Paniagua, Guillermo
Item Type: Presentation at Congress or Conference (Article)
Event Title: AIAA Scitech 2019 Forum
Event Dates: 7-11 January 2019
Event Location: San Diego, California
Title of Book: AIAA Scitech 2019 Forum
Date: 6 January 2019
Subjects:
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition

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Abstract

Base pressure control is often employed on drag reduction design, but the interaction of the jet with the base region flow topology can generate undesired or uncontrolled flow configurations. The ejected flow can drive pressure bifurcations at the trailing edge, that without a correct optimization can affect the aerodynamic performance of the system. The purpose of this work is to fully understand the physical mechanisms related with the use of injected base bleed employing global stability analysis and adjoint methodologies. Moreover, the results of the sensitivity analysis are used to identify the regions more receptive to passive and active flow control methodologies. This work has particular relevance in turbine research, where coolant flow is ejected at the trailing edge to ensure adequate thermal protection of the blade and the downstream turbine stages.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020675008SSeMIDEusebio Valero SánchezStability and Sensitivity Methods for Industrial Design

More information

Item ID: 57652
DC Identifier: http://oa.upm.es/57652/
OAI Identifier: oai:oa.upm.es:57652
DOI: 10.2514/6.2019-0881
Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2019-0881
Deposited by: Sr Alejandro Martinez-Cava
Deposited on: 10 Jan 2020 10:56
Last Modified: 10 Jan 2020 10:56
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