Condensation on ONERA M6 and F-16 Wings in Atmospheric Flight: Numerical Modeling

Goodheart, Kevin; Schnerr, Günter

doi:10.2514/1.5137

Cited by 7 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the grid numbers are 516, 2064, and 5856, the obtained values of Mach number M and pressure p/p 0 are shown in Figures 18,20,and 21. e comparison of the values of p/p 0 on the right also verifies the conclusion in Figure 19. With the increase of the number of grids, the compression wave moves to the right, while the comparison of the values of M on the left shows that the mesh encryption makes the solution more and more smooth.…”

Section: Parallel-jet Nozzle A1supporting

confidence: 60%

“…Yamamoto [20] continued Schnerr and Dohrmann's work and used viscous N-S equation to study the condensation of vortices on delta wings. In 2005, in more in-depth research, Goodhart and Schnerr [21] used the viscous RANS model to study the flow around the wing. At the same time, Yamamoto [22] also went deep into the airfoil and steam turbine.…”

Section: E Main Contributions and Esis Overviewmentioning

confidence: 99%

See 1 more Smart Citation

The Finite Element Numerical Study of Transonic Flow of Moist Air with Nonequilibrium Condensation

Tian

Mei

2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The finite element numerical simulation of the transonic flow with condensation is studied in this paper. The transformed weak form is numerically discretized by using the classical Galerkin finite element spatial discretization scheme and the backward Euler difference time discretization scheme. Because the coupled Euler equations are convection equations, the results obtained by the classical Galerkin method often have nonphysical numerical oscillations, so the stabilization method is introduced. Another important feature of compressible Euler equation is the existence of shock wave. Because the thickness of shock wave is small and difficult to capture, the shock wave can be better captured by adding artificial viscosity term. Here, the streamline upwind/Petrov–Galerkin (SUPG) finite element method with good stability and the isotropic diffusion method with shock capture ability are used to solve the problem of transonic flow with condensation. In the simulation of steady problems, in order to improve the calculation accuracy of the existing area of the shock wave, the adaptive mesh refinement technology is added, which refines the mesh in the region of the shock wave to improve the resolution of the shock wave. Numerical experiments verify the feasibility and stabilization of the numerical method. Finally, the simulation of transonic flow around NACA-0012 and parallel-jet nozzle A1 has obtained the better numerical results.

show abstract

Section: Parallel-jet Nozzle A1supporting

confidence: 60%

Section: E Main Contributions and Esis Overviewmentioning

confidence: 99%

The Finite Element Numerical Study of Transonic Flow of Moist Air with Nonequilibrium Condensation

Tian

Mei

2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…The phenomena occurring triggered by the water dispersed in the air have been puzzling researchers for a long time. Over 30 years ago, Schnerr et al [1][2][3], have initiated the experimental studies of humid airflow in the transonic regime, then he proposed a mathematical model based on the kinetic nucleation theorem, that was the basis for researchers all over the world, and has been implemented in many academic computational fluid dynamics (CFD) codes [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Archives of Thermodynamics

Wiśniewski,

Dykas,

Zhang

2020

View full text Add to dashboard Cite

The paper presents studies of mathematical modelling in transonic flow through the first stage rotor of the axial compressor of homogenous and heterogeneous condensation. The condensation phenomena implemented into a commercial software is based on the classical theory of nucleation and molecular-kinetic droplet growth model. Model is validated against experimental studies available in the literature regarding the flow through the first stage of turbine compressor, i.e. the rotor37 transonic compressor benchmark test. The impact of air humidity and air contamination on the condensation process for different flow conditions is examined. The influence of latent heat release due to condensation exerts a significant impact on the flow structure, thus the analysis of the air humidity and contamination influence on the condensation is presented. The results presented indicate the non-negligible influence of air humidity on the flow structure in the transonic flow regime, thus it is recommended to take condensation phenomenon under consideration in high-velocity airflow simulations.

show abstract

“…The most known of them are the works of Schnerr and his research team (Schnerr and Dohrmann, 1990, 1994, Schnerr and Mundinger, 1993. They focus both on the analysis of moist air internal flows and on aerodynamic applications such as the flow around an aircraft wing profile (Goodheart and Schnerr, G.H., 2005). Recent works in this field concern external flows in the first place and they are related to aerodynamic issues mainly (e.g.…”

Section: Introductionmentioning

confidence: 99%

Interphase processes analysis in moist air transonic flows in nozzles

Dykas

Majkut

Smołka

et al. 2017

European Conference on Turbomachinery Fluid Dynamics and Hermodynamics

View full text Add to dashboard Cite

During the flow of atmospheric air through convergent-divergent (CD) nozzles the water vapour contained in it can condense spontaneously. The resulting liquid phase may then undergo further phase transitions, e.g. evaporation on the shock waves arising in the nozzle divergent part. The subject of this paper is a numerical and experimental analysis of the process of atmospheric air water vapour condensation and an analysis of the resulting liquid phase evaporation on the shock wave. Calculations are performed using an in-house CFD code based on the solution of averaged Navier-Stokes equations supplemented with additional equations modelling the condensation process of water vapour contained in atmospheric air. Experiments are carried out using an in-house facility adapted for measurements of atmospheric air transonic flows. KEYWORDS MOIST AIR, CONDENSATION, EVAPORATION NOMENCLATURE c speed of sound cp specific heat at constant pressure D32 Sauter mean diameter h specific enthalpy L latent heat M Mach Number m mass p pressure s specific entropy T temperature u velocity y wetness mass fraction ΔT temperature increment  relative humidity Subscripts 0 total parameters 1, 2, 3, 4 characteristic points l liquid

show abstract

Condensation on ONERA M6 and F-16 Wings in Atmospheric Flight: Numerical Modeling

Cited by 7 publications

References 7 publications

The Finite Element Numerical Study of Transonic Flow of Moist Air with Nonequilibrium Condensation

The Finite Element Numerical Study of Transonic Flow of Moist Air with Nonequilibrium Condensation

Archives of Thermodynamics

Interphase processes analysis in moist air transonic flows in nozzles

Contact Info

Product

Resources

About