Voloshyn O.I., Potapchuk I.Yu., Zhevzhyk O.V., Yemelianenko V.I., Teplyi V.P., Kholyavchenko L.T., Shniakin S.V. Mathematical modeling of gas-dynamic charcteristics of the heat-transfer medium jet in the process of thermal reaming of the borehole

Details

Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 137

 

Geoteh. meh. 2017, 137, 32-39

MATHEMATICAL MODELING OF GAS-DYNAMIC CHARCTERISTICSOF THE HEAT-TRANSFER MEDIUM JET IN THE PROCESS OFTHERMAL REAMING OF THE BOREHOLE

¹Voloshyn O.I., ¹Potapchuk I.Yu., ¹Zhevzhyk O.V., ¹Yemelianenko V.I., ¹Teplyi V.P., ¹Kholyavchenko L.T., ¹Shniakin S.V.

¹N.S. Polyakov IGTM NAS of Ukraine

UDC 622.78(045):622.02:543.226

Abstract. Purpose of the work is to develop a mathematical model for calculation of gasdynamic characteristics (pressure, density, speed) of the heat-transfer medium at its movement along the surface of the borehole in the process of its thermal reaming. For this purpose, technique and algorithm were developed for calculation of gas-dynamic characteristics of the free and semibounded jet of the heat-transfer medium at its movement along the surface of the borehole. Advantages of application of the thermal tools with electric discharge are shown in comparison with other ways of thermal destruction of rocks, as well as a number of features of mathematical description of analytical methods for solving problems of the rock thermal destruction. Results of the experimental study confirm adequacy of the developed engineering model. Relative error of calculation of gas-dynamic characteristics for the heat-transfer medium along internal lateral surface of the cross duct channel, i.e. along the surface of the borehole, is quite acceptable for such class of problems. The obtained results can be used for modeling gas-dynamic characteristics for cases when thermal tool with electric discharge is used in other technologies of thermal treatment

and destruction of materials.

Keywords: mathematical model, thermal expansion, borehole, heat-transfer stream, gasdynamic characteristics.

 

REFERENCES

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2. Johnson, R.W. (2016), Handbook of fluid dynamics, CRC Press, London, United Kingdom.

3. Rieutord, M. (2015), Fluid Dynamics. An introduction, Springer, Heidelberg, Germany.

4. Ruban, A.I. and Gajjar, J.S.B. (2014), Fluid Dynamics: Part 1: Classical fluid dynamics, Oxford University Press, Oxford, United Kingdom.

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About the authors

Voloshyn Oleksii Ivanovych, Corresponding Member of the National Academy of Sciences of Ukraine, Doctor of Technical Sciences (D. Sc), Professor, Deputy Director, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Potapchuk Iryna Yuriivna, Master of Science, Junior Researcher in Department of Vibropneumatic Transport Systems and Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Zhevzhyk Oleksandr Vladyslavovych, Candidate of Technical Sciences (Ph.D), Associate Professor, Senior Researcher in Department of Vibropneumatic Transport Systems and Complexes, M.S. PolyakovInstitute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Yemelianenko Volodymyr Ivanovych, Candidate of Technical Sciences (Ph.D), Associate Professor, Senior Researcher in Department of Vibropneumatic Transport Systems and Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Teplyi Valerii Petrovych, Master of Sciences, Chief Project Designer in Department of Vibropneumatic Transport Systems and Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Kholiavchenko Leonid Tymofiiovych, Candidate of Technical Sciences (Ph.D), Associate Professor, Senior Researcher in Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Shniakin Sergii Volodymyrovych, Master of Science, Principal Engineer in the Department of Vibropneumatic Transport Systems and Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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