# Parallelization of a Three-Dimensional Flow Solver for Euler Rotorcraft Aerodynamics Predictions

@article{Wissink1996ParallelizationOA, title={Parallelization of a Three-Dimensional Flow Solver for Euler Rotorcraft Aerodynamics Predictions}, author={Andrew M. Wissink and Anastasios S. Lyrintzis and Roger C. Strawn}, journal={AIAA Journal}, year={1996}, volume={34}, pages={2276-2283} }

An approach for parallelizing the three-dimensional Euler/Navier-Stokes rotorcraft computational fluid dynamics flow solver transonic unsteady rotor Navier-Stokes (TURNS) is introduced. Parallelization is performed using a domain decomposition technique that is developed for distributed-memory parallel architectures. Communication between the subdomains on each processor is performed via message passing in the form of message passing interface subroutine calls. The most difficult portion of the…

## 24 Citations

### A PARALLEL NEWTON-KRYLOV METHOD FOR ROTORCRAFT FLOWFIELD CALCULATIONS

- Computer Science
- 1997

A Newton-Krylov scheme is proposed which couples conjugate gradient-like iterative methods within the baseline structured-grid Euler/Navier-Stokes flow solver TURNS (Transonic Unsteady Rotor Navier Stokes), yielding a reduction in the overall solution time.

### Short Communication: A Parallel Newton–Krylov Method for Navier–Stokes Rotorcraft Codes

- Computer Science
- 2003

The application of Krylov subspace iterative methods to unsteady three-dimensional Navier–Stokes codes on massively parallel and distributed computing environments is investigated and the Message Passing Interface protocol is used, because of its portability to various parallel architectures.

### Parallel Newton-Krylov method for rotary-wing flowfield calculations

- Computer Science
- 1999

The use of Krylov subspace iterative methods for the implicit solution of rotary-wing flowfields on parallel computers is explored and the Newton-Krylov scheme is found to be more robust and to attain a higher level of time accuracy in implicit time stepping.

### Parallelization of Rotorcraft Aerodynamics Navier -Stokes Codes

- Computer Science
- 2002

The modie cation of unsteady three-dimensional Navier ‐Stokes codes for application on massively parallel and distributed computing environments is investigated and two new implicit operators are used because of convergence problems of traditional operators with high cell aspect ratio grids needed for viscous calculations.

### Acceleration on stretched meshes with line-implicit LU-SGS in parallel implementation

- Computer Science
- 2015

The implicit lower–upper symmetric Gauss–Seidel (LU-SGS) solver is combined with the line-implicit technique to improve convergence on the very anisotropic grids necessary for resolving the boundary…

### PARALLEL UNSTRUCTURED GRID GMRES+LU-SGS METHOD FOR TURBULENT FLOWS

- Computer Science
- 2003

The developed parallel implicit method has been used to predict drag forces in the transonic regime for both DLR.-F4 and DLR-F6 configurations and it is demonstrated that turnaround in a matter of hours for numerical simulation of high Reynolds number turbulent flows past realistic geometries has been achieved.

### Data-parallel lower-upper relaxation method for the navier-stokes equations

- Computer Science
- 1996

The lower-upper symmetric Gauss-Seidel method is modified for the simulation of viscous flows on massively parallel computers, and a full matrix version of the DP-LUR method is derived.

### EFFICIENT CFD/CSD COUPLING METHODS FOR AEROELASTIC APPLICATIONS

- Engineering
- 2016

In this paper, dynamic grid method, full implicit scheme, parallel technology and improved coupling method are researched for efficiency simulation, which leads to a significant increase in performance over the explicit and LU-SGS implicit methods.

### Implicit Time Marching Methods for Large-Scale High-Accuracy Simulations of Compressible Flows

- Computer Science
- 2015

This study describes a methodology that combines the implicit time marching with the GMRES method when the spatial derivatives are discretized with the uniformly high order WENO schemes for the…

### IMPLEMENTATION OF UNSTRUCTURED GRID GMRES+LU-SGS METHOD ON SHARED-MEMORY, CACHE-BASED PARALLEL COMPUTERS

- Computer Science
- 2000

The implementation of an unstructured grid matrix-free GMRES+LU-SGS scheme on shared-memory, cache-based parallel machines is described and an optimally parallelized preconditioner for the GMRES scheme is developed.

## References

SHOWING 1-10 OF 25 REFERENCES

### Efficient Helicopter Aerodynamic and Aeroacoustic Predictions on Parallel Computers

- Computer Science
- 1996

This paper presents parallel implementations of two codes used in a combined CFD/Kirchhoff methodology to predict the aerodynamics and aeroacoustics properties of helicopters, and uses a new hybrid domain decomposition implementation of LU-SGS to obtain good parallel performance on the SP-2.

### Flowfield of a Lifting Rotor in Hover: A Navier-Stokes Simulation

- Physics
- 1992

The viscous, three-dimensional flow field of a helicopter rotor in hover is calculated by using an implicit, upwind, finite difference numerical method for the solution of thin-layer Navier-Stokes…

### Data-parallel lower-upper relaxation method for reacting flows

- Physics
- 1994

The implicit lower-upper symmetric Gauss-Seidel (LU-SGS) method of Yoon and Jameson is modified for use on massively parallel computers. The method has been implemented on the Thinking Machines CM-S…

### Data-parallel lower-upper relaxation method for the navier-stokes equations

- Computer Science
- 1996

The lower-upper symmetric Gauss-Seidel method is modified for the simulation of viscous flows on massively parallel computers, and a full matrix version of the DP-LUR method is derived.

### A Free-Wake Euler and Navier-Stokes CFD Method and its Application to Helicopter Rotors Including Dynamic Stall

- Engineering, Physics
- 1993

Abstract : This report summarizes the results of the research in two parts. Part I describes the development and application of a free-wake Euler and Navier- Stokes computational fluid dynamics…

### A domain decomposition study of massively parallel computing in compressible gas dynamics

- Computer Science
- 1995

The results of the paper show that the present Navier-Stokes solution technique has good performance on a massively parallel computer for transient flow problems and will require significant computer time due to an increased number of iterations to achieve a converged solution.

### Flowfield analysis of modern helicopter rotors in hover by Navier-Stokes method

- Engineering
- 1993

Abstract : The viscous, three-dimensional, flowfields of UH60 and BERP rotors are calculated for lifting hover configurations using a Navier-Stokes computational fluid dynamics method with a view to…

### TURNS - A free-wake Euler/Navier-Stokes numerical method for helicopter rotors

- Physics
- 1993

Computational capabilities of a numerical procedure, called TURNS (transonic unsteady rotor Navier-Stokes), to calculate the aerodynamics and acoustics (high-speed impulsive noise) out to several…

### Numerical simulation of a hovering rotor using embedded grids

- Physics, Engineering
- 1992

The flow field for a rotor blade in hover was computed by numerically solving the compressible thin-layer Navier-Stokes equations on embedded grids. In this work, three embedded grids were used to…

### Comparison of Finite Volume Flux Vector Splittings for the Euler Equations

- Physics
- 1985

A flux-splitting method in generalized coordinates has been developed and applied to quasi-one-dim ensional transonic flow in a nozzle and two-dimensional subsonic, transonic, and supersonic flow…