Boundary Conditions for the Potential Equation in Transonic Internal Flow Calculation PUBLIC ACCESS

[+] Author Affiliations
H. Deconinck, Ch. Hirsch

Vrije Universiteit Brussel, Brussels, Belgium

Paper No. 83-GT-135, pp. V001T01A051; 9 pages
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 1: Turbomachinery
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7951-1
  • Copyright © 1983 by ASME


An analysis of internal potential flow is presented showing the existence of multiple potential solutions with shocks for a given mass flow rate. These solutions are related to non isentropic Euler solutions.

Inflow and outflow boundary conditions are proposed which uniquely determine the shock position allowing the calculation of potential flows which are either choked or have a supersonic inlet.

Numerical computations using a multigrid finite element approach are presented and compared with exact quasi-one-dimensional Euler solutions confirming the ability of the potential method to solve accurately supersonic and choked nozzle flows.

Copyright © 1983 by ASME
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