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Original scientific paper

THE IMPACT OF WALL ROUGHNESS OF THE UNDERGROUND AIRWAYS ON THE VALUE OF HYDRAULIC FRICTION FACTOR

Vladimir Rendulić

Fulltext: croatian, pdf (3 MB) pages 45-49 downloads: 399* cite
APA 6th Edition
Rendulić, V. (1991). UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA. Rudarsko-geološko-naftni zbornik, 3 (1), 45-49. Retrieved from https://hrcak.srce.hr/24733
MLA 8th Edition
Rendulić, Vladimir. "UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA." Rudarsko-geološko-naftni zbornik, vol. 3, no. 1, 1991, pp. 45-49. https://hrcak.srce.hr/24733. Accessed 15 Oct. 2019.
Chicago 17th Edition
Rendulić, Vladimir. "UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA." Rudarsko-geološko-naftni zbornik 3, no. 1 (1991): 45-49. https://hrcak.srce.hr/24733
Harvard
Rendulić, V. (1991). 'UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA', Rudarsko-geološko-naftni zbornik, 3(1), pp. 45-49. Available at: https://hrcak.srce.hr/24733 (Accessed 15 October 2019)
Vancouver
Rendulić V. UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA. Rudarsko-geološko-naftni zbornik [Internet]. 1991 [cited 2019 October 15];3(1):45-49. Available from: https://hrcak.srce.hr/24733
IEEE
V. Rendulić, "UTJECAJ HRAPAVOSTI STIJENKI JAMSKOG VJETRENOG PROVODNIKA NA VELIČINU HIDRAULIČKOG KOEFICIJENTA TRENJA", Rudarsko-geološko-naftni zbornik, vol.3, no. 1, pp. 45-49, 1991. [Online]. Available: https://hrcak.srce.hr/24733. [Accessed: 15 October 2019]

Abstracts
The studies of turbulent flows in round pipes resulted in many hydraulic formulas up to these days, which can also serve in projecting to calculate the resistance to the air flow in underground openings. The report discusses the way of establishing the hydraulic friction factor of untimbered underground workings when the value of equivalent roughness is obtained by measuring the ventilation parameters in a similar working of some other mine. A double reticular nomogram has been constructed for the fast determination of friction coefficient from the known roughness of an underground working.

Keywords
Mine ventilation; Underground openings; Air current; Hydraulic diameter; Roughness; Smoothness; Friction factor

Hrčak ID: 24733

URI
https://hrcak.srce.hr/24733

[croatian]

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