Print Email Facebook Twitter PIV-based pressure measurement Title PIV-based pressure measurement Author van Oudheusden, B.W. (TU Delft Aerodynamics) Date 2013 Abstract The topic of this article is a review of the approach to extract pressure fields from flow velocity field data, typically obtained with particle image velocimetry (PIV), by combining the experimental data with the governing equations. Although the basic working principles on which this procedure relies have been known for quite some time, the recent expansion of PIV capabilities has greatly increased its practical potential, up to the extent that nowadays a time-resolved volumetric pressure determination has become feasible. This has led to a noveldiagnostic methodology for determining the instantaneous flow field pressure in a non-intrusive way, which is rapidly finding acceptance in an increasing variety of application areas. The current review describes the operating principles, illustrating how the flow-governing equations, in particular the equation of momentum, are employed to compute the pressure from the material acceleration of the flow. Accuracy aspects are discussed in relation to the most dominating experimental influences, notably the accuracy of the velocity source data, the temporal and spatial resolution and the method invoked to estimate the material derivative. In view of its nature of an emerging technique, recently published dedicated validation studies will be given specific attention. Different application areas are addressed, including turbulent flows, aeroacoustics, unsteady wing aerodynamics and other aeronautical applications. To reference this document use: http://resolver.tudelft.nl/uuid:8be95132-4853-4b51-8c82-18a5e333f19b DOI https://doi.org/10.1088/0957-0233/24/3/032001 ISSN 0957-0233 Source Measurement Science and Technology, 24, 1-32 Part of collection Institutional Repository Document type journal article Rights © 2013 B.W. van Oudheusden Files PDF MST_PPI_review_MST_374907 ... _final.pdf 4.5 MB Close viewer /islandora/object/uuid:8be95132-4853-4b51-8c82-18a5e333f19b/datastream/OBJ/view