History of the project

    Development of the DIESEL-RK software core has been started in 1981-82 in the department of Internal Combustion Engines (Piston Engines), Bauman Moscow State Technical University. From its very beginning the software was devised as a tool for optimization research and, therefore, a particular emphasis was made on the adequacy and operating speed of the mathematical models and algorithms applied, many of those being original authors’ codes. All these years the work has been constantly carried out in touch with engineers and computational research performed was to the order of different manufacturers of Internal Combustion Engines (ICE). In this time the software adequacy has been tested to fit dozens of engines of various types and purposes. Many computational procedures and options were introduced into the software to suit the demand of industrial enterprises – software users including biggest engine manufacturers of Russia.

    The software is intended primarily for ICE developers and researchers; hence much attention is given to provide the product of convenient use for an engineer. The input and output data therefore are organized in a way to suit the industrial demand.

    The first software version with a convenient interface and functions of multiparametrical optimization was issued in 1991 owing to financial support of A.Surin, to whom the project leader is truly grateful. The first DIESEL software was in use among leading motor manufacturers of Russia because of its convenient interface and core with the realized and at that time modern combustion model of the compression ignition engine.

    In 1993-1994 based on the novel computational code of mixture formation and combustion in diesels, developed by professor of the Kharkov Polytechnical Institute N.Razleytsev, a new software generation was developed and issued: DIESEL-4t software and its modification DIESEL-2t for two-stroke engines. Being a DOS application, the programs were equipped with a window interface reminding a Window application by appearance. For visualization of the mixture formation process and combustion in a diesel Fuel Jet Visualization code was included as part of DIESEL-4t software. In late 90s remote access to the software via INTERNET was organized. The software was intensively used not only within industrial enterprises but in the educational process at the department of ICE (Piston Engines), Bauman University, as well.

    The year 2002 gave start to the development of the new Window NT-oriented DIESEL-RK software. The software core was considerably improved and included the up-to-date procedure for calculating toxic emissions with account of the EGR system, multiphase injection research, what provides and expands the potentialities of the diesel performances calculation. As a result of hard work of the workers’ team the first version of DIESEL-RK software has been issued in 2004.

    As a professional product, DIESEL-RK software can be successfully used by the beginners: students and PhD students of higher schools. To make the process of numerous input data setting (being at times very time-consuming) easier, and empirical coefficients setting easier, the software comprises specific tools – settings wizards. The wizards will create data files automatically on the basis of most general information on the engine to be studied, using common technical solutions accepted in the motor-building industry. Thus, the process of input data setting is considerably simplified, and the most elaborate stage of computational research – calculation model calibration – is simplified as well. The latter fact is special importance to students having little experience, time and experimental date for customizing the software with the engine, and also for the needs of researchers performing quick examination of a particular engine design.

    Multiparametrical optimization used in the software ensures a radically increased efficiency of numerical research aimed at improving the technical level of engines.

    Over the course of its development DIESEL software has been always using advanced mathematical models of combustion in a diesel. In the present software version the RK-model is realized, taking into account specific injection features and fineness of fuel spraying, dynamics of fuel sprays evolution, interaction of sprays with air swirl and with the walls as well as orientation of sprays in the piston bowl. In this case the model accounts for conditions of each fuel spray evolution and thus generated near-wall flows as well as their interaction.

    Calculation of NOx emission is realized by the latest techniques: with Zeldovich scheme and with Detail Kinetic Mechanism.

    The software includes “Fuel Spray Visualization” code. This code allows a user in pictorial form to analyze the animation picture of fuel sprays evolution, their interaction with the piston bowl walls as well as with swirl and among themselves. The code is helpful in designing the piston bowl shape and in making a proper choice of diameter, number and directions of injector nozzles for a particular fuel supply characteristic and swirl intensity.

    Students and post-graduate students have a free remote access to the software via INTERNET to perform their course and diploma works.
    For example, the Diploma Projects (Master thesis) being performed in the Piston Engine department are presented below.

2010  Alexey Kuleshov  Z-engine 60 kW at 3600 RPM.

    The software developers express their gratitude to Head of the department of Piston Engines, Bauman MSTU, professor N.Ivaschenko who has been giving all possible assistance for the project development.

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