Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity
This study focuses on lab-scale experimental runoff hydrographs from a linear completely impervious plane subcatchment. An improved method of surface runoff physical modelling was developed, allowing for expanded laboratory hydrograph simulations up to a linear scale of 10. Model rains of different...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024007655 |
| _version_ | 1797328630742777856 |
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| author | Volodymyr Zhuk Lesya Vovk Ihor Popadiuk Ivan Matlai |
| author_facet | Volodymyr Zhuk Lesya Vovk Ihor Popadiuk Ivan Matlai |
| author_sort | Volodymyr Zhuk |
| collection | DOAJ |
| description | This study focuses on lab-scale experimental runoff hydrographs from a linear completely impervious plane subcatchment. An improved method of surface runoff physical modelling was developed, allowing for expanded laboratory hydrograph simulations up to a linear scale of 10. Model rains of different intensities and durations were applied, and digital online data processing techniques were employed to ensure high time resolution and accurate flow rate determination. The experimental hydrographs were analyzed in a dimensionless form to facilitate generalization and comparison with widely used nonlinear reservoir method and unit hydrograph method. Wave-like fluctuations of the flow rate were observed in most experimental hydrographs as they approached the maximum runoff. The dimensionless phase time of the experimental hydrographs showed an increasing trend with higher rainfall intensity, and a power-law equation was derived to approximate this relationship. An averaged dimensionless runoff hydrograph was obtained by processing individual hydrographs, and it was approximated by the DR-Hill-Zerobackground model for the initial stage during the rainfall and by the Weibull model for the later stage, after the rainfall stopped. The findings of this study have significant implications for modelling surface runoff from small urban subcatchments, particularly under critical rainfall events with extremely high intensity. |
| first_indexed | 2024-03-08T06:54:28Z |
| format | Article |
| id | doaj.art-e9745451af6c4126935ab5ccb6e1cb75 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-08T06:54:28Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-e9745451af6c4126935ab5ccb6e1cb752024-02-03T06:38:19ZengElsevierHeliyon2405-84402024-01-01102e24734Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensityVolodymyr Zhuk0Lesya Vovk1Ihor Popadiuk2Ivan Matlai3Lviv Polytechnic National University, Institute of Civil Engineering and Building Systems, S. Bandera Str. 12, Lviv, 79013, UkraineCorresponding author.; Lviv Polytechnic National University, Institute of Civil Engineering and Building Systems, S. Bandera Str. 12, Lviv, 79013, UkraineLviv Polytechnic National University, Institute of Civil Engineering and Building Systems, S. Bandera Str. 12, Lviv, 79013, UkraineLviv Polytechnic National University, Institute of Civil Engineering and Building Systems, S. Bandera Str. 12, Lviv, 79013, UkraineThis study focuses on lab-scale experimental runoff hydrographs from a linear completely impervious plane subcatchment. An improved method of surface runoff physical modelling was developed, allowing for expanded laboratory hydrograph simulations up to a linear scale of 10. Model rains of different intensities and durations were applied, and digital online data processing techniques were employed to ensure high time resolution and accurate flow rate determination. The experimental hydrographs were analyzed in a dimensionless form to facilitate generalization and comparison with widely used nonlinear reservoir method and unit hydrograph method. Wave-like fluctuations of the flow rate were observed in most experimental hydrographs as they approached the maximum runoff. The dimensionless phase time of the experimental hydrographs showed an increasing trend with higher rainfall intensity, and a power-law equation was derived to approximate this relationship. An averaged dimensionless runoff hydrograph was obtained by processing individual hydrographs, and it was approximated by the DR-Hill-Zerobackground model for the initial stage during the rainfall and by the Weibull model for the later stage, after the rainfall stopped. The findings of this study have significant implications for modelling surface runoff from small urban subcatchments, particularly under critical rainfall events with extremely high intensity.http://www.sciencedirect.com/science/article/pii/S2405844024007655High intensity rainfallLinear subcatchmentNonlinear reservoir methodStormwater hydrographSurface runoffWave effect |
| spellingShingle | Volodymyr Zhuk Lesya Vovk Ihor Popadiuk Ivan Matlai Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity Heliyon High intensity rainfall Linear subcatchment Nonlinear reservoir method Stormwater hydrograph Surface runoff Wave effect |
| title | Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| title_full | Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| title_fullStr | Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| title_full_unstemmed | Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| title_short | Experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| title_sort | experimental surface runoff hydrographs from linear impervious subcatchments for rainfalls of extremely high intensity |
| topic | High intensity rainfall Linear subcatchment Nonlinear reservoir method Stormwater hydrograph Surface runoff Wave effect |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024007655 |
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