@article{a817e546c0924a7899ee03b9bf2dde5a,
title = "Drag decomposition using partial-pressure fields in the compressible Navier-Stokes equations",
abstract = "The static-pressure field in the steady and compressible Navier-Stokes equations is decomposed into Euler (inviscid) and dissipative (viscous) partial-pressure fields as a generalization of the incompressible pressure decomposition previously reported by Schmitz and Coder (“Inviscid Circulatory-Pressure Field Derived from the Incompressible Navier-Stokes Equations,” AIAA Journal, Vol. 53, No. 1, 2015, pp. 33-41). The primary purpose of partial-pressure fields is to provide a means of dissecting local drag contributors over a lifting body. The analysis shows that the integral of the Euler pressure over the surface of a lifting body of thickness recovers the Kutta-Joukowski theorem for lift, and results in Maskell's formula for the vortex-induced drag in the limit of high Reynolds number; the combined integral of the dissipative pressure and wall shear stress results in a generalized form of Oswatitsch's formula for entropy-flux drag. Transport equations are derived with well-posed boundary conditions for both the Euler and dissipative partial-pressure fields for implementation in computational fluid dynamics codes as a complement to far-field and volumetric methods for drag decomposition of complex aircraft configurations.",
author = "Sven Schmitz",
note = "Funding Information: This work was supported by the National Aeronautics and Space Administration (NASA) University Leadership Initiative (ULI) at The Pennsylvania State University as a subcontract to the University of Tennessee Knoxville “Advanced Aerodynamic Design Center for Ultra-Efficient Commercial Vehicles” (Award NNX17AJ95A). The author would like to thank James Coder from the University of Tennessee Knoxville and Mark Maughmer from The Pennsylvania State University for many insightful comments on the nature of viscous-inviscid interaction and vortex-induced drag. Funding Information: This work was supported by the National Aeronautics and Space Administration (NASA) University Leadership Initiative (ULI) at The Pennsylvania State University as a subcontract to the University of Tennessee Knoxville ?Advanced Aerodynamic Design Center for Ultra-Efficient Commercial Vehicles? (Award NNX17AJ95A). The author would like to thank James Coder from the University of Tennessee Knoxville and Mark Maughmer from The Pennsylvania State University for many insightful comments on the nature of viscous-inviscid interaction and vortex-induced drag. Publisher Copyright: Copyright {\textcopyright} 2018 by the American Institute of Aeronautics and Astronautics Inc. All rights reserved. All requests for copying and permission to reprin should be submitted to CCC at www.copyright.com; employ the eISS 1533-385X to initiate your request. See also AIAA Rights and Permission www.aiaa.org/randp.",
year = "2019",
month = may,
doi = "10.2514/1.J057701",
language = "English (US)",
volume = "57",
pages = "2030--2038",
journal = "AIAA journal",
issn = "0001-1452",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "5",
}