This paper discusses aerodynamic design methods of volute casings used in turbocharger turbines. A quasi-three-dimensional (Q-3D) design method is proposed in which a group of extended two-dimensional potential flow equations and the streamline equation are numerically solved to obtain the geometry of spiral volutes. A tongue loss model, based on the turbulence wake theory, is also presented, and good agreement with experimental data is shown.
KhalilI. M.WeberH. G.Modeling of three-dimensional flow in turning channels. Twenty-ninth International Gas Turbine Conference and Exhibit, 4–7 June 1984, paper 84-GT-49 (American Society of Mechanical Engineers, New York).
2.
Von der NuellW. T.Single-stage radial turbines for gaseous substance with high rotative and low specific speed. Trans. ASME, 1952, 74, 491.
3.
BarnardM. C. S.BensonR. S.Radial gas turbines. Proc. Instn Mech. Engrs, 1968–9, 183(3N), 59–70.
4.
ScrimshawK. H.Scale effects in small geometrically similar radial gas turbines with particular reference to bladeless volute phenomena. PhD thesis, Kings' College, University of London, 1981.
5.
ChappieP. M.FlynnP. F.MulloyJ. M.Aerodynamic design of fixed and variable geometry nozzleless turbine casing. Trans. ASME, J. Engng Power, January 1980, 102..
6.
WhitfieldA.NoorA. B. MohdInvestigation of the flow characteristics of radial inflow turbocharger volutes. Proceedings of Fourth IMechE International Conference on Turbocharging and turbochargers, London, 22–24 May 1990, paper C405/023 (Mechanical Engineering Publications, London).
7.
MillerE. C.L'ecuyerM. R.BenisekC. F.Flow field surveys at the rotor inlet of a radial inflow turbine. ASME paper 87-ICE 52, 1987.
8.
ChenH.Steady and unsteady performance of vaneless casing radial-inflow turbines. PhD thesis, UMIST, 1990.
