Air distribution
CFD
Colebrook-White equation
Cooling Effect of Plants
Energy Plus Building
Film Heat Exchanger
Gas Exchange in Plants
Green Roof
Green Structures
Green Wall
Heat Recovery
Heat-Mass Exchange
Heat-mass transfer in green structures
HVAC
IAQ
Indoor Plants
NZEB
39
Scopus Publications
643
Scholar Citations
14
Scholar h-index
20
Scholar i10-index
Scopus Publications
Analysis and Prospective Use of Local Mineral Raw Materials to Increase the Aesthetic and Recreational Value of the Vyzhyvka River (Western Ukraine) Yuliia Trach, Tetiana Tkachenko, Maryna Kravchenko, Viktor Mileikovskyi, Oksana Tsos, et al. Environments Mdpi, 2025 Macrophytes are important components of aquatic ecosystems performing essential ecological functions. Their species composition and density reflect the ecological status of water bodies. The optimal ratio of morphological types of macrophytes is an important condition for preventing eutrophication. The aim of the study is to analyse the species composition, distribution, and density of macrophytes in the Vyzhyvka River (Ukraine) in a seasonal aspect (2023–2024) under constant physical and chemical characteristics of water. To assess the seasonal dynamics of water quality, changes in indicators in three representative areas were analysed. The MIR method of environmental indexation of watercourses was used to assess the ecological state of the river. The water quality in the Vyzhyvka River at all test sites corresponds to the second class of the “good” category with the trophic status of “mesotrophic”. This is confirmed by the identified species diversity, which includes 64 species of higher aquatic and riparian plants. Among the various morphological types of macrophytes, submerged rooted forms account for only 10.56% of the total species composition. To ensure a functional balance between submerged and other forms of macrophytes, a scientifically based approach is proposed, which involves the use of mineral raw materials of local origin, in particular, mining and quarrying wastes rich in silicon, calcium and other mineral components. The results obtained are of practical value for water management, environmental protection, and ecological reclamation and can be used to develop effective measures to restore river ecosystems.
Gas Exchange Research on Plant Layers of Green Structures and Indoor Greening for Sustainable Construction Tetiana Tkachenko, Oleksii Shkuratov, Akif Fazil oğlu Qasımov, Viktor Mileikovskyi, Anna Moskvitina, et al. Sustainability Switzerland, 2025 Green structures, buildings incorporating living plants, offer numerous benefits, including carbon sequestration and improved indoor air quality. (1) However, the effective design and analysis of these structures are hindered by a lack of standardised methodologies. This work proposes a novel four-zone method for instantaneous gas exchange testing in green structures. (2) The method involves estimating gas exchange by measuring gas content at the plant zone’s entrance and exit, with individual CO2 content measurements within the zone to account for inertia and stratification effects exacerbated by mixing. (3) This method has been adopted into a national standard draft. The dependency of CO2 absorption/release is obtained for Chlorophytum comosum. The method is also successfully tested on Ligustrum vulgare. (4) The developed method provides formulas and data on CO2 absorption/release for use in designing green structures and indoor greening systems. Results show that Chlorophytum comosum can consume over 23 μg/s of CO2 per square meter of foliage, with a light saturation threshold for CO2 absorption between 8500 and 20,000 phlx, depending on CO2 levels.
The Experimental Determination of the Heat Transfer Coefficient in Thin Channels of a Regenerative Heat Exchanger Daria Vakulenko, Viktor Mileikovskyi Fme Transactions, 2025 The use of exhaust air heat recovery systems is crucial for modern energy-efficient ventilation. In private homes, space limitations often hinder centralized systems, making decentralized regenerative ventilation an effective alternative. These systems feature small equivalent diameter cells, requiring refined heat transfer coefficients for accurate efficiency assessments. An experimental setup was constructed to study heat transfer in tubes with diameters of 3 mm and 5 mm, leading to the development of a Nusselt number formula to determine the convective heat transfer coefficient precisely. To minimize environmental interaction, suitable thermal insulation thickness was applied. Modeling channels with 3 mm and 9 mm diameters revealed temperature distribution and relationships between the Nusselt and Grashof numbers. A comparative analysis of the Nusselt number formula was conducted, aiding in evaluating heat transfer coefficients for tubes with internal diameters from 3 to 8 mm, along with the construction of a diagram for engineering applications.
Planning of green roofs for the best thermotechnical effect Tetiana Tkachenko, Anna Lis, Yurii Tsiuriupa, Viktor Mileikovskyi, Adam Ujma, et al. Scientific Review Engineering and Environmental Sciences, 2025 The energy-efficient provision of indoor comfort for buildings is one of the most important requirements for modern construction. The greening of buildings is a natural measure to achieve this, for which the most limiting factor is the lack of systematic research on its positive effects. At the Kyiv National University of Construction and Architecture, a series of research on thermotechnical benefits and gas exchange in plant layers has been performed. The cooling effect of plants is up to 4 K. Semi-intensive green roofs on rooms have paths, which absorb solar radiation and load the air-conditioning systems. The proposed solution is to build the paths on the auxiliary premises with low microclimate requirements. The work aims to estimate the heat distribution in green roofs with paths to test the recommendation. Simulation using the Fourier–Kirchhoff equation shows that the path has a trace of higher heat transfer on the ceiling up to an additional 1.8‒2.0 W·m−2. Thus, aligning the paths above the auxiliary premises is recommended, if possible. A better solution is to allow planting of the paths. Using plant-permit pavements and barefoot-in-dew systems such as ZinCo Soft Landscape are examples of such solutions. It is necessary to use grass that can be walked on.
Improving Urban Stormwater Management Using the Hydrological Model of Water Infiltration by Rain Gardens Considering the Water Column Maryna Kravchenko, Grzegorz Wrzesiński, Katarzyna Pawluk, Marzena Lendo-Siwicka, Anna Markiewicz, et al. Water Switzerland, 2024 Implementing rain garden (RG) designs is widespread worldwide to reduce peak flow rates, promote stormwater infiltration, and treat pollutants. However, inadequate RG design degrades its hydrological behaviour, requiring the development and validation of an appropriate hydrological model for the design and analysis of structures. This study aimed to improve a hydrological infiltration model based on Darcy’s law by taking into account the height of the water column (HWC) at the surface of the RG and the filtration coefficients of soil materials. The model was tested by simulating the hydrological characteristics of a rain garden based on a single rain event of critical intensity (36 mm/h). Using the validated model, design curves were obtained that predict the performance of the RG as a function of the main design parameters of the structure: water column height, ratio of catchment area to structure area, layer thickness, and soil filtration coefficient. The hydrological efficiency of the RG was evaluated in terms of the time of complete saturation, filling of the structure with water, and determining the change in HWC caused by changes in the parameters. The filtration coefficient and thickness of the upper and intermediate infiltration layers of the RG are the main parameters that affect the depth of saturation of the layers of the structure and the HWC on the surface. The model is not very sensitive to the model parameters related to the lower gravel layer. If the top layer’s thickness increases by 10 cm, it takes longer to fill the structure with water, and the HWC on the surface reaches 0.341 m. The rain garden’s performance improves when the filtration coefficient of the top layer is 7.0 cm/h. Complete saturation and filling of the structure with rainwater do not occur within 7200 s, and the water column reaches a height of 0.342 m at this filtration coefficient. However, the rain garden’s effectiveness decreases if the filtration coefficient of the upper and intermediate layers exceeds 15 cm/h and 25 cm/h, respectively, or if the catchment area to RG area ratio decreases to values below 15. The modelling results confirm that considering the HWC in RG hydrological models is essential for designing structures to minimise the risk of overflow during intense rainfall events.
Behaviour and Peculiarities of Oil Hydrocarbon Removal from Rain Garden Structures Maryna Kravchenko, Yuliia Trach, Roman Trach, Tetiana Tkachenko, Viktor Mileikovskyi Water Switzerland, 2024 The expansion of impervious areas in the context of climate change leads to an increase in stormwater runoff. Runoff from roads, petrol stations, and service stations is the most common form of unintentional release of petroleum hydrocarbons (PHs). Rain gardens are an important practice for removing PHs from stormwater runoff, but little data exist on the removal efficiency and behaviour of these substances within the system. The main objective of the study is to investigate the effectiveness of rain gardens in removing pollutants such as diesel fuel (DF) and used engine oil (UEO) in a laboratory setting, as well as to study the behaviours of these pollutants within the system. Eight experimental columns (7.164 dm3) were packed with soil (bulk density 1.48 kg/dm3), river sand (1.6 kg/dm3), and gravel. Plants of the Physocarpus opulifolia Diabolo species were planted in the topsoil to study their resistance to PHs. For 6 months, the columns were watered with model PHs followed by simulated rain events. The concentrations of PHs in the leachate and soil media of the columns were determined by reverse-phase high-performance liquid chromatography (RP-HPLC). The results of HPLC indicated the absence of UEO and DF components in the leachates of all experimental columns, which suggested 100% removal of these substances from stormwater. The chromatography results showed that 95% of the modelled PHs were retained in the surface layer of the soil medium due to the sorption process, which led to a change in hydraulic conductivity over time. Recommendations are proposed to increase the service life of rain gardens designed to filter PHs from stormwater.
Improving the Efficiency and Environmental Friendliness of Urban Stormwater Management by Enhancing the Water Filtration Model in Rain Gardens Maryna Kravchenko, Yuliia Trach, Roman Trach, Tetiana Tkachenko, Viktor Mileikovskyi Water Switzerland, 2024 Rain gardens are used to solve urban problems related to the negative impact of stormwater. (1) Scientific contributions from different countries provide general guidelines for the design and operation of rain gardens in different geographical areas. Given the small spatial scale of rain gardens, the use of existing infiltration models often leads to design errors. (2) The purpose of this paper is to develop a hydrological model by introducing a system of equations that extends the ability to calculate the rate, flow rate and time of saturation of layers with moisture and rainwater leakage from the rain garden system. (3) The results obtained allow us to describe the dynamic processes of passage and saturation of layers of the rain garden at a certain point in time, which extends the ability to calculate the flow rate. It was established that the smaller the area of the rain garden compared to the area of the catchment basin, the faster it reaches its full saturation. Increasing the thickness of the rain garden layers allows for an increase in the efficiency of water retention at a lower value of the area ratio. (4) The practical significance of the results obtained is especially important for the correct description of hydrodynamics in the system and determining the optimal conditions for the effective functioning and management of the rain garden structure for any climatic region.
Modelling infiltration processes in rain gardens: Influence of design parameters on hydrological efficiency Maryna Kravchenko, Tetiana Tkachenko, Viktor Mileikovskyi Ecological Safety and Balanced Use of Resources, 2024 A rain garden is a stormwater management system designed for on-site water control. Suboptimal rain garden designs may compromise hydrological performance during operation, necessitating developing and validating a mathematical model for engineering calculations and design assessment. This study aimed to model infiltration processes in a rain garden using a mathematical framework that accounts for the height of the water column (HWC) on the surface and the filtration coefficient of soil materials, simulating system behaviour during an extreme rainfall event (36 mm/h). The developed model generated performance curves illustrating the rain garden’s efficiency as a function of design parameters: construction depth, catchment-to-garden area ratio, filtration coefficient, and water retention capacity (WRC). Key soil material parameters were determined experimentally under laboratory conditions. The infiltration performance of the system was evaluated by analysing the variation in infiltration time, saturation of all layers, and the water filling level of the rain garden resulting from adjustments to its parameters and changes in HWC on the surface. The modelling results indicated that the primary parameters influencing the predicted time for complete system saturation and HWC formation are the catchment-to-garden area ratio and the filtration coefficient. The WRC of soil materials and the depth of the system layers significantly impact the time required for full saturation and water filling but have minimal effect on the surface HWC. It was demonstrated that a rain garden with a depth of 1.2 m, a catchment-to-garden area ratio of 15, and a filtration coefficient of 100-200 cm/h functions effectively under critical rainfall intensities. The developed model and the resulting data, providing precise calculations and design recommendations, can be utilised by engineers and planners to optimise rain garden designs, thereby enhancing stormwater management efficiency
INVESTIGATION IN CRITICAL RADIUS OF THERMAL INSULATION FOR VERTICAL PIPES Daria Vakulenko, Viktor Mileikovskyi, Tetiana Tkachenko, Oleksandr Liubarets Engineering for Rural Development, 2024 Thermal insulation of pipelines finds application across various industries, including agricultural technologies. The energy efficiency hinges on minimizing heat losses. The task is primarily achieved through effective heat insulation. Decentralized ventilation systems prove to be efficient in rural low-rise constructions. Among these, regenerative ventilators like Blauberg Vento/Vents TwinFresh stand out. There exists a goal to enhance their operational efficiency, which involves ongoing investigation into heat recovery processes within their thin ducts. Improving the insulation of the experimental setup leads to a reduction in experimental uncertainty. Also, a new gas exchange camera for CO₂ exchange in plants requires very low uncertainty of airflow measurements requiring very high precision of air density measurement. However, heat losses can influence the air temperature deviation in a flow meter. However, within the realm of heat transfer literature, the concept of the critical insulation radius is stated. Increasing the insulation radius beyond a certain point might diminish its efficacy due to outer surface development. Theoretical assumptions posit a constant heat transfer coefficient for the outer surface. Previously, we analysed the critical radius of horizontal cylinder pipes. This study deals with laminar convective flow around the outer vertical cylindrical insulation surface. Employing a formula considering the Grashof number, the average heat transfer coefficient is analysed. The results indicate that increasing insulation thickness reduces the surface temperature and the heat transfer coefficient such as for vertical pipes. An analysis of the thermal resistance function concerning the ratio of outer to inner diameters, and its derivative, was conducted. The asymptotic increase in the thermal resistance was found. This fully disproves the critical radius concept opening new perspectives on energy efficiency and thermotechnical research precision.
Using Rain-Garden Bands for Rainwater Drainage from Roads Tetiana Tkachenko, Olena Voloshkina, Viktor Mileikovskyi, Rostyslav Sipakov, Roman Hlushchenko, et al. World Environmental and Water Resources Congress 2023 Adaptive Planning and Design in an Age of Risk and Uncertainty Selected Papers from World Environmental and Water Resources Congress 2023, 2023
Simplified simulation of flows with turbulent macrostructure Hydraulic Engineering IV Proceedings of the 4th International Technical Conference on Hydraulic Engineering Che 2016, 2016
Проблеми переходу України на власне забезпечення газовим ресурсом Ю Франчук, В Мілейковський, В Коновалюк Вентиляція, освітлення та теплогазопостачання 56, 118-130 , 2026 2026
Екологія з основами зеленого будівництва ТМ Ткаченко, ВО Мілейковський, МВ Кравченко, ЮВ Цюрюпа КНУБА: Компринт , 2026 2026
Альтернативні та традиційні джерела енергії ТМ Ткаченко, ВО Мілейковський, ЮВ Цюрюпа КНУБА: Компринт , 2026 2026
Моделювання організації витісняючої вентиляції з забезпеченням теплового й шумового комфорту В Корбут, Т Ткаченко, В Мілейковський, С Морковник, Г Клименко Вентиляція, освітлення та теплогазопостачання 55, 6-32 , 2025 2025
Природні підходи до організації витісняючої вентиляції з забезпеченням теплового й шумового комфорту В Корбут, Т Ткаченко, В Мілейковський, В Попов, Р Глущенко, ... Вентиляція, освітлення та теплогазопостачання 54, 6-18 , 2025 2025
Analysis and Prospective Use of Local Mineral Raw Materials to Increase the Aesthetic and Recreational Value of the Vyzhyvka River (Western Ukraine) Y Trach, T Tkachenko, M Kravchenko, V Mileikovskyi, O Tsos, M Boiaryn, ... Environments 12 (7), 235 , 2025 2025 Citations: 6
Термомодернізація та удосконалення інженерних систем корпусу Ф Національного університету “Полтавська політехніка імені Юрія Кондратюка” АО Харченко, ОВ Череднікова, ДВ Гузик, ВО Мілейковський, АО Соснін, ... 2025
Термомодернізація та удосконалення інженерних систем корпусу Ф Національного університету “Полтавська політехніка імені Юрія Кондратюка” О Череднікова, В Мілейковський, А Харченко, А Соснін, М Чередніков Вентиляція, освітлення та теплогазопостачання 52, 32-46 , 2025 2025 Citations: 1
New Ukrainian Green Construction Standards T Tkachenko, V Mileikovskyi Green Dimensions: Fundamental, Applied, and Industrial Aspects», June 5− 7 … , 2025 2025
THE FIRST UKRAINIAN GREEN BUILDING STANDARDS T Tkachenko, V Mileikovsky IV International Scientific and Practical Conference «Green Construction», 208 , 2025 2025
The influence of green structures of blue infrastructure on the load of building structures M Kravchenko, T Tkachenko, V Mileikovskyi, O Tkachenko Strength of Materials and Theory of Structures, 135-144 , 2025 2025 Citations: 1
Gas Exchange Research on Plant Layers of Green Structures and Indoor Greening for Sustainable Construction T Tkachenko, O Shkuratov, A Fazil oğlu Qasımov, V Mileikovskyi, ... Sustainability 17 (8), 3467 , 2025 2025 Citations: 2
Planning of green roofs for the best thermotechnical effect T Tkachenko, A Lis, Y Tsiuriupa, V Mileikovskyi, A Ujma, O Tkachenko, ... Scientific Review Engineering and Environmental Sciences (SREES) 34 (1), 42-54 , 2025 2025 Citations: 5
Theoretical simulation of natural air exchange and indoor air quality with an example of a green wall introduction V Mileikovskyi, T Tkachenko, L Kotelkov Results in Engineering 25, 104336 , 2025 2025 Citations: 3
INTEGRATED MODEL FOR ASSESSING THE ENVIRONMENTAL SAFETY OF URBANWATER SUPPLY AND SEWAGE SYSTEMS T Tkachenko, V Sakhnovska, М Kravchenko, T Kashchenko, ... Elmi Əsərlər/Scientific Works of Azerbaijan University of Architecture and … , 2025 2025
Адаптивні методики викладання у вищій школі як інструмент психолого-педагогічної підтримки та соціальної адаптації студентів в умовах кризи СП Морковник, ВО Мілейковський Державний податковий університет , 2025 2025
Ventilation Equipment for Residential and Public Buildings D Vakulenko, V Mileikovskyi KNUCA , 2025 2025
Вентиляція: Методичні вказівки до виконання лабораторних робіт ВО Мілейковський, Д Вакуленко КНУБА , 2025 2025
The Experimental Determination of the Heat Transfer Coefficient in Thin Channels of a Regenerative Heat Exchanger. D Vakulenko, V Mileikovskyi FME Transactions 53 (1) , 2025 2025 Citations: 2
Системи формування мікроклімату споруд різного призначення [Електронний ресурс]: методичні вказівки до виконання розрахунково-графічної роботи ВП Корбут, ВО Мілейковський, СГ Рибачов КНУБА , 2025 2025
MOST CITED SCHOLAR PUBLICATIONS
New approach for refined efficiency estimation of air exchange organization V Dovhaliuk, V Mileikovskyi Science Publishing Corporation , 2018 2018 Citations: 37
Precise explicit approximations of the Colebrook-White equation for engineering systems V Mileikovskyi, T Tkachenko International Scientific Conference EcoComfort and Current Issues of Civil … , 2020 2020 Citations: 35
Simplified analysis of turbulence intensity in curvilinear wall jets V Dovhaliuk, O Gumen, V Mileikovskyi, V Dziubenko University of Belgrade, Faculty of Mechanical Engineering , 2018 2018 Citations: 29
Geometric Analysis of Turbulent Macrostructure in Gets Laid on Flat Surfaces for Turbulence Intensity Calculation O Gumen, V Dovhaliuk, V Mileikovskyi, O Lebedieva, V Dziubenko University of Belgrade, Faculty of Mechanical Engineering , 2017 2017 Citations: 29
Improving the efficiency and environmental friendliness of urban stormwater management by enhancing the water filtration model in rain gardens M Kravchenko, Y Trach, R Trach, T Tkachenko, V Mileikovskyi Water 16 (10), 1316 , 2024 2024 Citations: 27
Geometric basis of the use of “green constructions” for sun protection of glazing T Tkachenko, V Mileikovskyi International Conference on Geometry and Graphics, 1096-1107 , 2018 2018 Citations: 27
“Green structures” for effective rainwater management on roads R Hlushchenko, T Tkachenko, V Mileikovskyi, V Kravets, O Tkachenko Production Engineering Archives 28 , 2022 2022 Citations: 26
Assessment of light transmission for comfort and energy efficient insolation by “green structures” T Tkachenko, V Mileikovskyi International Conference on Geometry and Graphics, 139-151 , 2020 2020 Citations: 25
Methodology of thermal resistance and cooling effect testing of green roofs. T Tkachenko, V Mileikovskyi Songklanakarin Journal of Science & Technology 42 (1) , 2020 2020 Citations: 24
Improvement of the safety of multi-floor housing T Tkachenko, V Mileikovskyi, V Dziubenko, O Tkachenko IOP Conference Series: Materials Science and Engineering 907 (1), 012064 , 2020 2020 Citations: 21
Increasing indoor air quality by a natural sanitizing interior T Tkachenko, V Mileikovskyi E3S Web of Conferences 211, 02015 , 2020 2020 Citations: 20
Solution of sick building syndrome problem using indoor plants T Tkachenko, V Mileikovskyi Procedia Environmental Science, Engineering and Management 6 (3), 405-411 , 2019 2019 Citations: 19
Geometric representation of turbulent macrostructure in 3D jets O Gumen, V Dovhaliuk, V Mileikovskyi International Conference on Geometry and Graphics, 739-745 , 2018 2018 Citations: 15
Field study of air quality improvement by a “Green roof” in Kyiv T Tkachenko, V Mileikovskyi, A Ujma System Safety: Human-Technical Facility-Environment 1 (1) , 2019 2019 Citations: 14
The principles of energy efficient microclimate provision in the skyscraper “biotecton” of 1 km height O Krivenko, V Mileikovskyi, T Tkachenko EUSER , 2018 2018 Citations: 14
Improving urban stormwater management using the hydrological model of water infiltration by rain gardens considering the water column M Kravchenko, G Wrzesiński, K Pawluk, M Lendo-Siwicka, A Markiewicz, ... Water 16 (16), 2339 , 2024 2024 Citations: 12
Research of cooling effect of vegetation layer of green structures in construction T Tkachenko, V Mileikovskyi RS Global , 2017 2017 Citations: 12
Behaviour and peculiarities of oil hydrocarbon removal from rain garden structures M Kravchenko, Y Trach, R Trach, T Tkachenko, V Mileikovskyi Water 16 (13), 1802 , 2024 2024 Citations: 10
Analysis of critical radius of insulation for horizontal pipes D Vakulenko, V Mileikovskyi, T Tkachenko, A Ujma, V Konovaliuk Contents of Proceedings of 22nd International Scientific Conference … , 2023 2023 Citations: 10
Вентиляція індивідуального житлового будинку ВО Мілейковський, ЛМ Котелков «ФОП Середняк Т.К.» , 2018 2018 Citations: 10