[PDF] Full Visualization Of In Flight Flow Phenomena Using Infrared Thermography Download eBook

Visualization of In-flight Flow Phenomena Using Infrared Thermography

Author: D. W. Banks

Publisher:

Published: 2000

Total Pages: 18

ISBN-13:

Infrared thermography was used to obtain data on the state of the boundary layer of a natural laminar flow airfoil in supersonic flight. In addition to the laminar-to-turbulent transition boundary, the infrared camera was able to detect shock waves and present a time dependent view of the flow field. A time dependent heat transfer code was developed to predict temperature distributions on the test subject and any necessary surface treatment. A commercially available infrared camera was adapted for airborne use in this application. Readily available infrared technology has the capability to provide detailed visualization of various flow phenomena in subsonic to hypersonic flight regimes.

Remote Infrared Thermography for In-Flight Flow Diagnostics

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-06-11

Total Pages: 32

ISBN-13: 9781720707271

DOWNLOAD EBOOK

The feasibility of remote in-flight boundary layer visualization via infrared in incompressible flow was established in earlier flight experiments. The past year's efforts focused on refining and determining the extent and accuracy of this technique of remote in-flight flow visualization via infrared. Investigations were made into flow separation visualization, visualization at transonic conditions, shock visualization, post-processing to mitigate banding noise in the NITE Hawk's thermograms, and a numeric model to predict surface temperature distributions. Although further flight tests are recommended, this technique continues to be promising.Shiu, H. J. and vanDam, C. P.Armstrong Flight Research CenterBOUNDARY LAYER SEPARATION; FLIGHT TESTS; INCOMPRESSIBLE FLOW; FLOW VISUALIZATION; INFRARED RADIATION; BOUNDARY LAYERS; TEMPERATURE DISTRIBUTION; THERMOGRAPHY; SEPARATED FLOW; DIAGNOSIS

Handbook Of Flow Visualization

Author: Wen Jei Yang

Publisher: Routledge

Published: 2018-12-19

Total Pages: 1410

ISBN-13: 1351442600

DOWNLOAD EBOOK

With contributions from some of the world's leading experts, the second edition of this classic reference compiles all major techniques of flow visualization and demonstrates their applications in all fields of science and technology. A new chapter has been added that covers flow visualization applications in large wide tunnels for airplane and automobile testing. Several important examples of applications are included. A second new chapter details the use of infrared (IR) cameras for detecting and observing the boundary layer transition in industrial wind tunnels and flight testing of commercial transport airplanes. A final new chapter has been added on multiphase flow and pulsed-light velocimetry.

Power-Based Study of Boundary Layer Ingestion for Aircraft Application

Author: Peijian Lv

Publisher: Springer Nature

Published: 2022-09-14

Total Pages: 138

ISBN-13: 9811954976

DOWNLOAD EBOOK

This book presents research on Boundary Layer Ingestion (BLI). BLI is an aircraft-engine integration technique that aims at integrating the aircraft and the propulsion system such that the overall aircraft fuel consumption can be reduced. In this research, theoretical analysis suggests that the minimization of total power consumption should be used as a design criterion for aircraft utilizing BLI rather than focusing on the minimization of drag. Numerical simulations are performed, and the simulation results are processed using the PBM to support the theoretical analysis. Furthermore, an experimental study is carried out with a focus on the power conversion processes involved for a propulsor operating in the wake. Stereoscopic PIV is employed in order to visualize the flow and understand the physics. The so-called Power-based Method is used to quantify the power conversion mechanisms. The results prove that the dominant mechanism responsible for the efficiency enhancement is due to the utilization of body wake energy by the wake ingesting propeller. In short, the importance of wake energy flow rate in understanding the BLI phenomenon is highlighted. This book will be useful for researchers in the field of aircraft propulsion, aircraft aerodynamics, and airframe propulsion integration.

Theory and Computation in Hydrodynamic Stability

Author: W. O. Criminale

Publisher: Cambridge University Press

Published: 2018-12-06

Total Pages: 566

ISBN-13: 110869800X

DOWNLOAD EBOOK

The study of hydrodynamic stability is fundamental to many subjects, ranging from geophysics and meteorology through to engineering design. This treatise covers both classical and modern aspects of the subject, systematically developing it from the simplest physical problems, then progressing to the most complex, considering linear and nonlinear situations, and analyzing temporal and spatial stability. The authors examine each problem both analytically and numerically. Many relevant fluid flows are treated, including those where the fluid may be compressible, or those from geophysics, or those that require salient geometries for description. Details of initial-value problems are explored equally with those of stability. The text includes copious illustrations and an extensive bibliography, making it suitable for courses on hydrodynamic stability or as an authoritative reference for researchers. In this second edition the opportunity has been taken to update the text and, most importantly, provide solutions to the numerous extended exercises.

Infrared Thermography for Thermo-Fluid-Dynamics

Author: Tommaso Astarita

Publisher: Springer Science & Business Media

Published: 2012-08-04

Total Pages: 237

ISBN-13: 3642295088

DOWNLOAD EBOOK

Infrared thermography is a measurement technique that enables to obtain non intrusive measurements of surface temperatures. One of the interesting features of this technique is its ability to measure a full two dimensional map of the surface temperature and for this reason it has been widely used as a flow visualization technique. Since the temperature measurements can be extremely accurate it is possible, by using a heat flux sensor, also to measure convective heat transfer coefficient distributions on a surface making the technique de facto quantitative. This book, starting from the basic theory of infrared thermography and heat flux sensor guides, both the experienced researcher and the young student, in the correct application of this powerful technique to various practical problems. A significant number of examples and applications are also examined in detail.