The aim of this paper is to improve the boundary conditions modelling for one-dimensional simulation codes. First, a literature survey is made in order to present the main equations and literature models, then a detailed description of the methodology is presented. Cross-sectional area variations and bends are studied using a new methodology. New models are then established that depend on the geometrical configuration and the flow characteristics. Finally, numerical results are compared with experimental results from a shock test bench. The new models are found to give better results for the instantaneous pressure signals and to improve flow calculations significantly.
WinterboneD. E.PearsonR. J.Design techniques for engine manifolds - wave action methods for IC engines, 1999 (Professional Engineering Publishing, London and Bury St Edmunds).
Lotus Engine Simulation, Engine performance prediction, available from www.lesoft.co.uk
5.
AVL, Boost, Engine cycle and gas exchange simulation, available from www.avl.com
6.
PayriF.ReyesE.GalindoJ.Analysis and modelling of the fluid-dynamic effects in branched exhaust junctions of ICEJ. Engng for Gas Turbines and Power, 2001, 123, 197–203.
7.
KuoT. W.KhalighiB.Numerical study on flow distribution in T-junctions and a comparison with experiment. In Proceedings of ASME Internal Combustion Engines Division Spring Technical Conference on Engine modelling, Marietta, Ohio, 23-26 April 1995, Vol. 23 (ASME International, New York).
8.
BlairG. P.LauH. B.CartwrightA.RaghunathanB. D.MackeyD. O.Coefficient of discharge at the apertures of enginesSAE Trans., 1995, 104, 3–2048.
9.
BensonR. S.HorlockJ. H.WinterboneD. E.The thermodynamics and gas dynamics of internal combustion engines, Vol. 1, 1982 (Clarendon Press, Oxford).
10.
PeyretR.Résolution numérique des systèmes hyperboliques. Application à la dynamique des gaz, ONERA publication 1977-5, 1978 (ONERA, France).
11.
VandervoordeM.VierendeelsJ.DickE.SierensR.A new total variation diminishing scheme for the calculation of one-dimensional flow in inlet and exhaust pipes of internal combustion enginesProc. Inst Mech. Engrs, Part D: J. Automobile Engineering, 1998, 212, 5–437.
12.
ChaletD.ChesséP.HétetJ.-F.TauziaX.Some basic elements to achieve a future 1D simulation of wave propagation in ICE pipes. In Proceedings of ASME Internal Combustion Engine Division, Spring Technical Conference, Rockford, Illinois, 14-17 April 2002, Vol. 38, pp. 55–62 (ASME International, New York).
13.
ChenC.VeshaghA.WallaceF. J.A comparison between alternative methods for gas real flow and performance prediction of internal combustion engines. In Proceedings of SAE International Meeting 921734, 1992, pp. 1793–1824 (SAE International, Warrendale, Pennsylvania).
14.
KirkpatrickS. J.An evaluation of one-dimensional simulation techniques for predicting unsteady gas flow in engine ducting. PhD Thesis, Department of Mechanical and Manufacturing Engineering, The Queen's University of Belfast, 1994.
15.
WinterboneD. E.PearsonR. J.Theory of engine manifold design - wave action methods for IC engines, 2000 (Professional Engineering Publishing, London and Bury St Edmunds).
16.
BlairG. P.KirkpatrickS. J.MackeyD. O.FleckR.Experimental validation of 1-D modelling codes for a pipe system containing area discontinuities. In Proceedings of SAE Automotive Congress, Detroit, 1995, Vol. 104, pp. 488–501, SAE paper 950276, (SAE International, Warrendale, Pennsylvania).
17.
TrengrouseG. H.SolimanM. M.Effect of sudden changes in flow area on pressure waves of finite amplitudeJ. Mechanical Engineering Science, 1966, 8, 2–198.
18.
MorimuneT.HirayamaN.MaedaT.Study of compressible high speed gas flow in piping system - 1st report, piping systems with bends and elbowsBull. JSME, 1980, 23(186), 1997–2004, paper 186-8.
19.
TakizawaM.UnoT.OueT.YuraT.A study of gas exchange process simulation of an automotive multi-cylinder internal combustion engineSAE Trans., 1982, 91, 2–1663.
20.
BlairG. P.LauH. B.CartwrightA.RaghunathanB. D.MackeyD. O.Coefficients of discharge at the apertures of enginesSAE Trans., 1995, 104, 3–2048.
21.
FleckR.CartwrightA.Coefficients of discharge in high performance two-stroke enginesSAE Trans., 1996, 105, 3–2469.
BlairG. P.KirkpatrickS. J.MackeyD. O.FleckR.Experimental validation of 1-D modelling codes for a pipe system containing area discontinuities. In Proceedings of SAE Automotive Congress, Detroit, 1995 Vol. 104, pp. 488–501, SAE paper 950276.
24.
ChaletD.Etude et modélisation des ondes depression dans les géométries complexes - Application à la simulation du fonctionnement d'un moteur à combustion interne. PhD Thesis, Ecole Centrale de Nantes and Université de Nantes, France, 2003.
25.
National Instruments, Mesure et automatisation, 2002 (National Instruments, Le Blanc-Mesnil, France).
