Unsteady Momentum Source Method for Efficient Simulation of Rotor Aerodynamics

Kim, Young-Hwa; Park, Seung-O

doi:10.2514/1.c031934

Cited by 18 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The propeller needs to be simplified for predicting the aerodynamics of the MAV. MSM 12,13 is intermediate in accuracy and complexity between the free-vortex methods 14 and CFD methods. 15 In this article, the propeller is represented as a thin cylindrical region, where the momentums are changed within the fluid by introducing momentum source terms.…”

Section: Numerical Approach Flow Solvermentioning

confidence: 99%

Computational fluid dynamics-based virtual flight simulation of a flying wing micro air vehicle

Cai

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

In this article, a computational fluid dynamics-based computational method is developed to simulate the virtual flight of a flying wing micro air vehicle. The virtual flight simulation model is composed of unsteady Reynolds averaged Navier-Stokes equations, motion equations, and flight control equations. The flow solver is established based on low Mach number preconditioning method, momentum source method, implicit dual time-stepping algorithm, and lower upper symmetric Gauss-Seidel iteration scheme on hybrid dynamic meshes. S-A turbulence model is also introduced to close the Reynolds averaged Navier-Stokes equations. Fourth-order Adams prediction-correction method is adopted to couple computational fluid dynamics and rigid body dynamics. The multidisciplinary computational method is validated as a reliable tool for virtual flight simulation through simulating wing-rock motion of a delta wing. Finally, the developed method is used to simulate the virtual flight of the micro air vehicle. The effectiveness of the computational method is proved in the virtual flight simulation.

show abstract

Section: Numerical Approach Flow Solvermentioning

confidence: 99%

Computational fluid dynamics-based virtual flight simulation of a flying wing micro air vehicle

Cai

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…In contrast, in an actuator line model (ALM) [6][7][8] and actuator surface model (ASM) [9,10], an unsteady momentum source is considered at the exact location of the virtual rotor blades on an azimuthal location. The ALM and ASM consider the generation and dissipation of inboard and tip vortexes in the computational domain, respectively.…”

Section: Introductionmentioning

confidence: 99%

Actuator Disk Model with Improved Tip Loss Correction for Hover and Forward Flight Rotor Analysis

Son,

Kim

2023

Aerospace

View full text Add to dashboard Cite

A novel actuator disk model (ADM) coupled with lifting-line theory is proposed in this paper. Several virtual planform blades are placed on a disk plane with a constant azimuthal interval, and the lifting-line theory is applied to each blade to predict the effective angle of attack. The proposed model considers the local lift and drag forces acting on disk surface cells by interpolating the predicted effective angle of attack with various azimuth angles to the actuator disk plane; therefore, the proposed model considers individual blade tip vortices without tip loss functions. Experimental data for hover and forward flight rotors are used to validate the proposed model. For hovering flight, sectional thrust based on collective pitch angles predicted by the modified ADM was similar to that obtained in the experiments. For forward flight, the inflow above the rotor estimated by the proposed ADM was similar to that obtained in the experiments and by using other numerical methods. Thus, the developed ADM can be used for rotor performance analysis under the main flight conditions of V/STOL.

show abstract

Effects of chef operation on oil fume particle collection of household range hood

Chen

You

2020

Environ Sci Pollut Res

View full text Add to dashboard Cite

Unsteady Momentum Source Method for Efficient Simulation of Rotor Aerodynamics

Cited by 18 publications

References 21 publications

Computational fluid dynamics-based virtual flight simulation of a flying wing micro air vehicle

Computational fluid dynamics-based virtual flight simulation of a flying wing micro air vehicle

Actuator Disk Model with Improved Tip Loss Correction for Hover and Forward Flight Rotor Analysis

Effects of chef operation on oil fume particle collection of household range hood

Contact Info

Product

Resources

About