Ribalco
Vladimir Vladimirovich


Professor of the Chair of Power Plants of the Engineering Institute. 30 years has been teaching the Theory of the Performance of Ship Gas-Turbine Plants. Published over 100 articles/papers, plus 5 study books and 8 tutorials.

More at www.ribalco.chat.ru

Bibliography

E-mail: ribalco@rambler.ru


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Fields of professional interest:

Inviting to cooperation:
The main method of studies: mathematical modeling/simulation of processes with the use of experimental data (for correcting models) and methods of passive and active planning of experiments. Examples of solving problems in MATHCAD are enclosed.

Name of programm

Short description

Programmes

1

Programme 1
Technique intended for the evaluation of efficiency of GTS

The technique allows one to perform a comparative evaluation of efficiency of Gas-turbine sets (GTS) of certain designs (designs can be proposed by users) based on criteria of the minimal fuel consumption during GTS life cycle and maximum probability of non-failure operation for a fixed period of GTS operation. The detailed comments are given in the text of the algorithm. An extensive graphic illustration of calculations is provided.

Source information:
- spectrum of GTS operation modes;
- fuel consumption for no-load operation mode (idling operation) of all engines of GTS;
- laws of reliability (and appropriate parameters) of all functionally significant elements of GTS.


Programme 1.zip

2

Programme 3.
Technique for the calculation of availability factor of GTS

The calculation of the availability factor for a GTS of a certain design is carried out based on Markov model for the evaluation of a probability that an object is in each state (out of a set of all states specified in advance). The options of hot and cold redundancy are analyzed. Detailed comments and illustrations are provided.

Source information:
- mean time of non-failure operation of GTS elements;
- mean time of reconditioning of these elements following the failure.


Programme 3.zip

3

Programme 6.
Algorithm for the calculation of cycle parameters of one-compressor GTS with regeneration

The efficiency and amount of useful work of a cycle at various combina-tions of values of parameters of a working body and degrees of regeneration are calculated. Illustrations and detailed comments are provided.

Source information:
- efficiency of engine elements;
- thermal constants of a working body;
- temperature of a working body in characteristic points of a cycle;
- degree of regeneration.


Programme 6.zip

4

Programme 7.
Algorithm for the calculation of parameters of a cycle of two-compressor GTS with regeneration and intermediate cooling of air in the course of compression

The efficiency and amount of useful work of a cycle at various combina-tions of values of parameters of a working body, degrees of regeneration, value of overcooling of air and pressure of air in an intermediate cooling unit are calculated. The results of the calculations are presented are well illustrated by two and three-dimensional diagrams.
Source information:
- efficiency of engine elements;
- thermal constants of a working body;
- temperature of a working body in characteristic points of a cycle;
- degree of regeneration;
- air overcooling value;
- pressure in an intermediate cooling unit.

Programme 7.zip

5

Programme 8.
Algorithm for the calculation of cycle parameters of a two-compressor GTS on reduced capacity modes

The efficiency, values of hourly and specific fuel consumption, and all thermal parameters of a working body for static modes of GTS operation (starting from rated capacity mode and ending with idle operation mode) are calculated. The algorithm is based on the equation of working body flow through a flowing part of turbines (A.Stodola equation). Numerous illustrations.
Source information:
- efficiency of engine elements;
- thermal constants of a working body;
- temperature of a working body in characteristic points of a cycle for nominal rated load duty.

Programme 8.zip

6

Programme 13.
Algorithm for the calculation of optimal terms of maintenance for GTS

The calculation of optimal terms of maintenance is carried out when a certain history of GTS failures in the course of its operation is accumulated with a certain trend in the occurrence of these failures. The observance of the calculated GTS maintenance terms/periods results in the maximum reliability parameters of a GTS (i.e. probability of non-failure operation, factor of technical use or factor of operational availability). The detailed comments and graphic interface are provided.
Source information:
- parameters of the law of reliability GTS.

Programme 13.zip

7

Programme 14.
Algorithm for the calculation of the effectiveness of maintenance system for GTS

The effectiveness of maintenance system is estimated based on a functional that takes into account the period when GTS is in operational state in relation to the total time when it is in other states (i.e. reconditioning/restoration following the failure, scheduled maintenance procedures, and so forth). Regenerative processes are analyzed, and Markov model is built. Detailed comments and illustrative diagrams are provided.
Source information:
- parameters of reliability of GTS;
- guideline value of availability factor of GTS.

Programme 14.zip

8

Programme 15.



Programme 15.zip

9

Programme 16.



Programme 16.zip

10

Programme 17.



Programme 17.zip

11

Programme 18.



Programme 18.zip



Bibliography: