3D Euler flow simulations on a cyber 205 vector computer

3D Euler flow simulations on a cyber 205 vector computer

Koppenol, P.J.

National Aerospace Laboratory NLR

1985-03-31

A computational method for solving the 3D Euler equations is studied. The method is based upon an upwind flux-difference splitting scheme by Osher, exhibiting an implicit mechanism for numerical viscosity, in connection with an explicit time-marching finite-volume technique. The computer program is developed to run efficiently on both a scalar computer and the Cyber 205 vector computer. Demands made by the necessity of vectorizability of the code, on algorithm, data-structuring, and the code itself, are discussed. Also, the large data sets involved in 3D calculations, appear to impose severe claims on central-memory size, I/O devices and line connections. The method is tested for a transonic and supersonic quasi-two-dimensional channel flow. The Euler model is found to give an accurate simulation of aerodynamic phenomena in the channel.

Euler equations of motion
CDC Cyber 205 computer
hyperbolic functions
three dimensional flow
computational fluid dynamics
algorithms
vectors (mathematics)
difference equations
runtime (computers)
Cauchy problem

http://resolver.tudelft.nl/uuid:c99a8973-afa9-4295-8e03-d1537907dc55

Nationaal Lucht- en Ruimtevaartlaboratorium

Campus only

NLR-TR 85054 U

Aerospace Engineering Reports

report

(c) 1985 National Aerospace Laboratory NLR