Discharge Coefficient of Broad-crested Weirs as a Function of the Relative Weir Height for Different Weir Lengths

Simple item page
dc.citation.epage68
dc.citation.issue2
dc.citation.spage63
dc.contributor.affiliationНаціональний університет “Львівська політехніка”
dc.contributor.affiliationLviv Polytechnic National University
dc.contributor.authorЖук, В. М.
dc.contributor.authorМатлай, І. І.
dc.contributor.authorПопадюк, І. Ю.
dc.contributor.authorВовк, Л. І.
dc.contributor.authorРегуш, В. А.
dc.contributor.authorZhuk, Volodymyr
dc.contributor.authorMatlai, Ivan
dc.contributor.authorPopadiuk, Ihor
dc.contributor.authorVovk, Lesya
dc.contributor.authorRehush, Vladyslav
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2021-12-21T13:16:07Z
dc.date.available2021-12-21T13:16:07Z
dc.date.created2020-03-23
dc.date.issued2020-03-23
dc.description.abstractВодозливи з широким порогом (ВШП) часто використовують у гідротехнічному будівництві та у водному господарстві. Найскладнішим для визначення фактором, що впливає на пропускну здатність ВШП, є його коефіцієнт витрати. В українській інженерній практиці коефіцієнт витрати ВШП визначають як функцію відносної висоти водозливної стінки, тоді як найпоширеніші європейські методики – як функцію відносної ширини порогу. У роботі отримано експериментальні залежності коефіцієнта витрати ВШП прямокутного профілю з вертикальними вхідною та вихідною гранями без заокруглення ребер для відношення ширини порогу та висоти стінки d/Р = 2; 4. Порівняння отриманих результатів зі значеннями коефіцієнта витрати аналогічних ВШП за методами Куміна та Хагера вказує на те, що цей коефіцієнт залежить і від висоти стінки, і від ширини порогу. Отримано відповідні емпіричні степеневі залежності. За однакових значень відносної висоти порогу коефіцієнт витрати для ВШП зі співвідношенням d/Р = 4 є значимо менший, ніж для водозливу з d/Р = 2, що може бути пояснено суттєвішим впливом опору тертя для водозливу з більшою шириною порогу.
dc.description.abstractBroad-crested weirs (BCW) are often used in hydraulic engineering and water management. The most complex factor that affects the discharge capacity of BCW is the discharge coefficient. In Ukrainian engineering practice, the flow rate of BCW is defined as a function of the relative height of the spillway wall, while in the most common European methods – as a function of the relative length of the weir. The experimental dependences of the discharge coefficient of rectangular sharp-edged BCW with vertical inlet and outlet walls with the ratio of the weir length and height d/P = 2; 4 are obtained. A comparison of the obtained results with the values of the discharge coefficient of the same BCW using the methods of Kumin and Hager indicates that this coefficient depends on both the height of the wall and the length of the weir. The corresponding empirical power law dependences are obtained. At the same values of the relative height of the wall, the discharge coefficient for the weir with the ratio d/P = 4 is significantly lower comparing the weir with d/P = 2, that can be explained by the more significant effect of friction resistance for the weir with longer threshold.
dc.format.extent63-68
dc.format.pages6
dc.identifier.citationDischarge Coefficient of Broad-crested Weirs as a Function of the Relative Weir Height for Different Weir Lengths / Volodymyr Zhuk, Ivan Matlai, Ihor Popadiuk, Lesya Vovk, Vladyslav Rehush // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 2. — No 2. — P. 63–68.
dc.identifier.citationenDischarge Coefficient of Broad-crested Weirs as a Function of the Relative Weir Height for Different Weir Lengths / Volodymyr Zhuk, Ivan Matlai, Ihor Popadiuk, Lesya Vovk, Vladyslav Rehush // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 2. — No 2. — P. 63–68.
dc.identifier.doidoi.org/10.23939/jtbp2020.02.063
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/56589
dc.language.isoen
dc.publisherВидавництво Львівської політехніки
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofTheory and Building Practice, 2 (2), 2020
dc.relation.referencesAzimi, A. H., Rajaratnam, N., Zhu, D. Z. (2013). Discharge characteristics of weirs of finite crest length with
dc.relation.referencesupstream and downstream ramps. Journal of Irrigation and Drainage Engineering, 139(1), 75–83.
dc.relation.referencesBadr, K., Mowla, D. (2014). Development of rectangular broad-crested weirs for flow characteristics and
dc.relation.referencesdischarge measurement. KSCE Journal of Civil Engineering, 19(1), 136–141. DOI: 10.1007/s12205-012-0433-z.
dc.relation.referencesBolshakov, V. A. (1984) Spravochnyk po gidravlike. Kyiv, Vyshcha shkola, 343 pp. (in Russian).
dc.relation.referencesНager, W. H., Schwalt, M. (1994). Broad-crested weir. Journal of Irrigation and Drainage Engineering, 120(1), 13–26. doi.org/10.1061/(ASCE)0733-9437(1994)120:1(13)
dc.relation.referencesGovinda Rao, N. S., Muralidhar, D. (1963). Discharge characteristics of weirs of finite-crest length. La
dc.relation.referencesHouille Blanche, 5, 537–545. doi.org/10.1051/lhb/1963036
dc.relation.referencesGuven, A., Hassan, M., Sabir, S. (2013). Experimental investigation on discharge coefficient for a combined
dc.relation.referencesbroad crested weir-box culvert structure. Journal of Hydrology, 500, 97–103. doi.org/10.1016/j.jhydrol.2013.07.021
dc.relation.referencesJalil, S. A., Ibrahim, S. S., Jafer, R. A. (2014). Surface roughness effects on discharge coefficient of
dc.relation.referencesbroad crested weir. Research Journal of Applied Sciences, Engineering and Technology, 7(24), 5227–5233.
dc.relation.referencesDOI: 10.19026/rjaset.7.918
dc.relation.referencesKonstantinov, Yu. K., Hizha, O. O. (2006). Inzhenerna hidravlika. Kyiv, Slovo, 432 pp. (in Ukrainian).
dc.relation.referencesKulkarni, K. H., Hinge, G. A. (2020). Experimental study for measuring discharge through compound broad
dc.relation.referencescrested weir. Flow Measurement and Instrumentation, 75, 101803. doi.org/10.1016/j.flowmeasinst.2020.101803
dc.relation.referencesRekomendatsii po gidravlicheskomu raschetu vodoslivov. Ch. I. Priamye vodoslivy. Leningrad, Energia, 1974, 58 pp. (in Russian).
dc.relation.referencesRohalevych, Yu. P. (2010). Hidravlika. Kyiv. Vyshcha shkola. 431 pp. (in Ukrainian).
dc.relation.referencesSalmasi, F., Poorescandar, S., Dalir, A. H., Zadeh, D. F. (2011). Discharge relations for rectangular broadcrested weirs. Tarim Bilimleri Dergisi, 17(4), 324–336.
dc.relation.referencesSturm, T. W. (2001). Open Channel Hydraulic. McGraw-Hill Series in Water Resources and Environmental
dc.relation.referencesEngineering, 500.
dc.relation.referencesZachoval, Z., Knéblová, M., Roušar, L., Rumann, J., Šulc, J. (2014). Discharge coefficient of a rectangular
dc.relation.referencessharp-edged broad-crested weir. Journal of Hydrology and Hydromechanics, 62(2), 145–149. DOI: 10.2478/johh2014-0014
dc.relation.referencesZhuk, V., Matlai, I., Popadiuk, I., Vovk, L. (2020). Discharge coefficient of broad-crested weirs as function
dc.relation.referencesof the relative weir length and height for weirs with large length to head ratios. Theoretical and scientific
dc.relation.referencesfoundations of engineering: collective monograph. International Science Group. Boston, Primedia eLaunch, 96–101.
dc.relation.references(in Ukrainian). DOI : 10.46299/isg.2020.MONO.TECH.II
dc.relation.referencesenAzimi, A. H., Rajaratnam, N., Zhu, D. Z. (2013). Discharge characteristics of weirs of finite crest length with
dc.relation.referencesenupstream and downstream ramps. Journal of Irrigation and Drainage Engineering, 139(1), 75–83.
dc.relation.referencesenBadr, K., Mowla, D. (2014). Development of rectangular broad-crested weirs for flow characteristics and
dc.relation.referencesendischarge measurement. KSCE Journal of Civil Engineering, 19(1), 136–141. DOI: 10.1007/s12205-012-0433-z.
dc.relation.referencesenBolshakov, V. A. (1984) Spravochnyk po gidravlike. Kyiv, Vyshcha shkola, 343 pp. (in Russian).
dc.relation.referencesenNager, W. H., Schwalt, M. (1994). Broad-crested weir. Journal of Irrigation and Drainage Engineering, 120(1), 13–26. doi.org/10.1061/(ASCE)0733-9437(1994)120:1(13)
dc.relation.referencesenGovinda Rao, N. S., Muralidhar, D. (1963). Discharge characteristics of weirs of finite-crest length. La
dc.relation.referencesenHouille Blanche, 5, 537–545. doi.org/10.1051/lhb/1963036
dc.relation.referencesenGuven, A., Hassan, M., Sabir, S. (2013). Experimental investigation on discharge coefficient for a combined
dc.relation.referencesenbroad crested weir-box culvert structure. Journal of Hydrology, 500, 97–103. doi.org/10.1016/j.jhydrol.2013.07.021
dc.relation.referencesenJalil, S. A., Ibrahim, S. S., Jafer, R. A. (2014). Surface roughness effects on discharge coefficient of
dc.relation.referencesenbroad crested weir. Research Journal of Applied Sciences, Engineering and Technology, 7(24), 5227–5233.
dc.relation.referencesenDOI: 10.19026/rjaset.7.918
dc.relation.referencesenKonstantinov, Yu. K., Hizha, O. O. (2006). Inzhenerna hidravlika. Kyiv, Slovo, 432 pp. (in Ukrainian).
dc.relation.referencesenKulkarni, K. H., Hinge, G. A. (2020). Experimental study for measuring discharge through compound broad
dc.relation.referencesencrested weir. Flow Measurement and Instrumentation, 75, 101803. doi.org/10.1016/j.flowmeasinst.2020.101803
dc.relation.referencesenRekomendatsii po gidravlicheskomu raschetu vodoslivov. Ch. I. Priamye vodoslivy. Leningrad, Energia, 1974, 58 pp. (in Russian).
dc.relation.referencesenRohalevych, Yu. P. (2010). Hidravlika. Kyiv. Vyshcha shkola. 431 pp. (in Ukrainian).
dc.relation.referencesenSalmasi, F., Poorescandar, S., Dalir, A. H., Zadeh, D. F. (2011). Discharge relations for rectangular broadcrested weirs. Tarim Bilimleri Dergisi, 17(4), 324–336.
dc.relation.referencesenSturm, T. W. (2001). Open Channel Hydraulic. McGraw-Hill Series in Water Resources and Environmental
dc.relation.referencesenEngineering, 500.
dc.relation.referencesenZachoval, Z., Knéblová, M., Roušar, L., Rumann, J., Šulc, J. (2014). Discharge coefficient of a rectangular
dc.relation.referencesensharp-edged broad-crested weir. Journal of Hydrology and Hydromechanics, 62(2), 145–149. DOI: 10.2478/johh2014-0014
dc.relation.referencesenZhuk, V., Matlai, I., Popadiuk, I., Vovk, L. (2020). Discharge coefficient of broad-crested weirs as function
dc.relation.referencesenof the relative weir length and height for weirs with large length to head ratios. Theoretical and scientific
dc.relation.referencesenfoundations of engineering: collective monograph. International Science Group. Boston, Primedia eLaunch, 96–101.
dc.relation.referencesen(in Ukrainian). DOI : 10.46299/isg.2020.MONO.TECH.II
dc.rights.holder© Національний університет “Львівська політехніка”, 2020
dc.rights.holder© Zhuk V., Matlai I., Popadiuk I., Vovk L., Rehush V., 2020
dc.subjectводозлив з широким порогом
dc.subjectкоефіцієнт витрати
dc.subjectвідносна ширина порогу
dc.subjectвідносна висота порогу
dc.subjectbroad-crested weir
dc.subjectdischarge coefficient
dc.subjectrelative height of the wall
dc.subjectrelative length of the weir
dc.titleDischarge Coefficient of Broad-crested Weirs as a Function of the Relative Weir Height for Different Weir Lengths
dc.title.alternativeКоефіцієнт витрати водозливу з широким порогом як функція безрозмірної висоти порогу для водозливів різної ширини
dc.typeArticle

Files

Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
2020v2n2_Zhuk_V-Discharge_Coefficient_of_Broad_63-68.pdf
Size:
612.78 KB
Format:
Adobe Portable Document Format
Download
No Thumbnail Available
Name:
2020v2n2_Zhuk_V-Discharge_Coefficient_of_Broad_63-68__COVER.png
Size:
427.82 KB
Format:
Portable Network Graphics
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.09 KB
Format:
Plain Text
Description:
Download

Collections

Theory and Building Practice. – 2020. – Vol. 2, No. 2