Towards real-time pilot-in-the-loop CFD simulations of helicopter/ship dynamic interface

Ilker Oruc, Joseph Francis Horn, Jeremy Shipman, Susan Polsky

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study presents the development of computationally efficient coupling of Navier-Stokes Computational Fluid Dynamics (CFD) with a helicopter flight dynamics model with the ultimate goal of real-time simulation of airwake effects in the helicopter/ship Dynamic Interface (DI). The flight dynamics model is free to move within a computational domain, where the main rotor forces are converted to source terms in the momentum equations of the CFD solution using an actuator disk model. Simultaneously, the CFD solver calculates induced velocities that are fed back to the simulation and affect the aerodynamic loads in the flight dynamics. The CFD solver models the inflow, ground effect and interactional aerodynamics in the flight dynamics simulation, and these calculations can be coupled with the solution of the external flow (e.g., ship airwake effects). The simulation framework for fully-coupled pilot-in-the-loop (PIL) flight dynamics/CFD is demonstrated for a simplified shedding wake. Initial tests were performed with 0.38 million structured grid cells running on 352 processors and showed near-real-time performance. Improvements to the coupling interface are described that allow the simulation run at near-real-time execution speeds on currently available computing platforms. Improvements in computing hardware are expected to allow real-time simulations.

Original languageEnglish (US)
Article number1743005
JournalInternational Journal of Modeling, Simulation, and Scientific Computing
Volume8
Issue number4
DOIs
StatePublished - Dec 1 2017

Fingerprint

Interface Dynamics
Flight Dynamics
Flight dynamics
Helicopter
Computational Fluid Dynamics
Ship
Dynamic Simulation
Helicopters
Interfaces (computer)
Computational fluid dynamics
Ships
Real-time
Computer simulation
Dynamic models
Aerodynamics
Dynamic Model
Simulation
Actuator disks
Ground effect
Flight Simulation

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Computer Science Applications

Cite this

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abstract = "This study presents the development of computationally efficient coupling of Navier-Stokes Computational Fluid Dynamics (CFD) with a helicopter flight dynamics model with the ultimate goal of real-time simulation of airwake effects in the helicopter/ship Dynamic Interface (DI). The flight dynamics model is free to move within a computational domain, where the main rotor forces are converted to source terms in the momentum equations of the CFD solution using an actuator disk model. Simultaneously, the CFD solver calculates induced velocities that are fed back to the simulation and affect the aerodynamic loads in the flight dynamics. The CFD solver models the inflow, ground effect and interactional aerodynamics in the flight dynamics simulation, and these calculations can be coupled with the solution of the external flow (e.g., ship airwake effects). The simulation framework for fully-coupled pilot-in-the-loop (PIL) flight dynamics/CFD is demonstrated for a simplified shedding wake. Initial tests were performed with 0.38 million structured grid cells running on 352 processors and showed near-real-time performance. Improvements to the coupling interface are described that allow the simulation run at near-real-time execution speeds on currently available computing platforms. Improvements in computing hardware are expected to allow real-time simulations.",
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Towards real-time pilot-in-the-loop CFD simulations of helicopter/ship dynamic interface. / Oruc, Ilker; Horn, Joseph Francis; Shipman, Jeremy; Polsky, Susan.

In: International Journal of Modeling, Simulation, and Scientific Computing, Vol. 8, No. 4, 1743005, 01.12.2017.

Research output: Contribution to journalArticle

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