Apurba Layek

Scopus Publications

Numerical investigation on the performance of solar air heater having staggered semi-frustum roughness on the absorber plate
Ramit Choudhury, Apurba Layek, Siddhita Yadav, Abhimannyu Sharma
Thermal Science and Engineering Progress, 2025
Maximizing thermohydraulic performance of solar air heaters with staggered v-ribbed surfaces using metaheuristic algorithms
Dheeraj Kumar, Swarup S Deshmukh, Apurba Layek
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2025
This study aimed to determine the influence of roughness parameters on the thermohydraulic performance ( THP ) of a solar air heater with a roughened surface and a V-shaped rib element with staggered twists. In order to get more exact and accurate findings with fewer experiment trials, cost, and time-saving, morphological and operational parameters are adjusted by designing experiments using response surface methodology ( RSM ) and a metaheuristic technique such as the teacher-learning-based optimization ( TLBO ) algorithm. The development of a regression model for estimating THP in terms of specified roughness and flow parameters has been provided. The final optimization result demonstrates that TLBO outperforms RSM in terms of performance. Previously, thermal measurement technique was made through thermocouples, which were unable to give the actual dispersal of thermal mapping, but this research paper investigates the effect of rib elements on the thermal performance, with their varied parameters assessed with the unique measurement technique of liquid crystal thermography. Experimentally determined values at P/e = 9, d/e = 4, S/e = 6.15, and Re = 18,555 provide a maximum THP of 2.69. With a mean bias error of 0.015, the maximal THP value derived by the TLBO algorithm displays excellent agreement with the testing data. The analysis of variance reveals that Re has the greatest influence on THP , with a percentile contribution of 63.63%, while the contributions for other parameters are 39.81%, 37.61%, and 56.11% for the optimal roughness values, respectively.
Enhancement of thermal efficiency and development of Nusselt number correlation for the solar air heater collector roughened with artificial ribs for thermal applications
Dheeraj Kumar, Apurba Layek, Amit Kumar
Environmental Science and Pollution Research, 2024
Experimental study for the enhancement of heat transfer characteristics and development of thermal correlations of a roughened solar collector
Dheeraj Kumar, Rakesh Kumar, Apurba Layek
Heat Transfer, 2024
The thermal performance of the flat plate solar collector is very low. The most beneficial and worthwhile method for increasing the thermal performance of a solar‐powered air heater (SPAH) is to include a roughness element in the working zone of heat transfer that is located beneath the shear layer of the absorber surface. In this research work, efforts are made to enhance thermal performance and develop thermal correlations for the estimation of the Nusselt number and friction factor of a roughened SPAH. Experiments are performed for various ranges of flow, Reynolds numbers, and roughness parameters. The experimental technique of liquid crystal thermography is utilized to assess the dispersal of Nusselt number over the roughened surface for all roughness parameters. A maximum thermal performance enhancement index of 2.69 is obtained with the optimum value of the roughness parameter at a relative roughness pitch (RRP) of 9, a relative staggering distance (RSD) of 4, and a relative roughness length (RRL) of 6.15. Second, a mathematical correlation is developed using a regression model to estimate the Nusselt number and friction factor in terms of nondimensional roughness and flow parameters operated as RRP, RSD, RRL, and Re. The degree of discrepancy between the established the relationships and the findings from the experiment reveals incredibly satisfying results. Hence employing twisted V‐ribs as an artificial roughness element no doubt increases the Nusselt number, and thermohydraulic performance enhancement index, but it also exerts less frictional power across the SPAH duct.
Important of biodiesel and its challenges in CI engine
Bijay Narayan Mohanty, Apurba Layek
Aip Conference Proceedings, 2024
Energy is a prerequisite for financial growth. As a result, vitality utilization in all shapes has expanded across the nation. The around the world natural issue is caused by the expanding utilize of fossil powers. The need for alternate fuel has become unavoidable due to the enormous demand for diesel in the transportation and agricultural sectors. There has been a significant surge in the study of alternative fuels in light of the need to reduce emissions. Vegetable oil-based biodiesel is equivalent to diesel in terms of calorific fuel and emission quality. The jatropha seed contains oil in the range of 30 to 50% by weight from the various feedstock of biodiesel. It can be effectively compared to any biodiesel from the perspective of calorific value, as well as to diesel. Diesel has essentially identical characteristics to all other fuels, including viscosity, flash point, cetane number, cloud point, and pour point. According to studies on alternative fuels, biodiesel has a positive effect on lowering CO, CO2, and HC emissions whether used alone or in blends with diesel without requiring any modifications to the engine's current design. Environmental friendliness, clean burning, increased engine life without requiring modifications, nontoxicity, and biodegradability is just a few of the benefits of biodiesel When mixing Jatropha Biodiesel with other parameters in a CI, the execution parameter and outflow are inspected.
Experimental Study for the Enhancement of Thermal Efficiency and Development of Nusselt Number Correlation for the Roughened Collector of Solar Air Heater
Dheeraj Kumar, Apurba Layek, Amit Kumar, Rakesh Kumar
Journal of Thermal Science and Engineering Applications, 2024
The solar air heater’s thermal efficiency is relatively poor owing to the flat collector surface. This article’s primary objective is to increase the collectors’ thermal efficiency of rectangular ducts of solar air heater by adopting a novel V-shaped twisted rib element with staggering orientation. Experimentations are performed for various flow Reynolds numbers ranging from 3 k to 21 k, roughness pitch-to-rib height ratio ranging from 7 to 11, and staggering distance-to-rib height ratio between 2 and 6. Dispersion of Nusselt number over the collector surface is achieved through the liquid crystal thermography technique. Among the varied rib and flow constraints, it is observed that a maximum thermal performance enhancement index of 2.69 is observed, with the optimum value of the roughness parameter at a rib pitch-to-height ratio of 9 and a staggering distance-to-height ratio of 4. Mathematical correlation has also been developed using a regression model to estimate the Nusselt number in terms of non-dimensional roughness parameters. The percentage deviation between the Nusselt number attained from established relationships and the investigational results is found to be giving very satisfactory outcomes. The thermal efficiency of the smooth surface is recognized at 41.64% which increases for the roughened surface of twisted V-ribs to 73.63%. Hence employing twisted V-ribs as an artificial roughness element no doubt increases the Nusselt number, thermohydraulic performance enhancement index, and thermal efficiency, but it also exerts less frictional power of solar air heater.
Impact of compression ratio, fuel injection pressure and timing on the behaviour of compression ignition engine operating with ethanol-enriched WCOME blends
Apurba Layek
International Journal of Ambient Energy, 2024
Compression ignition engines' performance, emission and combustion characteristics are studied using ethanol-enriched waste cooking oil methyl ester (WCOME) varying compression ratio, fuel injection pressure and timing under full load conditions. The fuel blend of base fuel (10% WCOME and rest diesel) with 5% ethanol was tested at different compression ratios of 18, 19, 20 and 21; injection pressures of 200, 220, 240 and 260 bar, and injection timing of 21°, 23°, 25° and 27° before top dead centre. The carbon monoxide, hydrocarbon emission and smoke opacity of the blend were 16.3%, 19.6% and 36.8% less respectively than that of diesel at a fuel injection pressure of 240 bar. The lowest brake-specific energy consumption obtained is 1.06% less than that of diesel. Higher brake thermal efficiency, lower brake specific energy consumption, and reduced carbon monoxide and hydrocarbon emissions except nitrogen oxides are obtained for fuel injection timing of 25° before the top dead centre. The peak of cylinder pressure at 65.47 bar is obtained for the fuel blend at 9° after the top dead centre and 240 bar fuel injection pressure.
The enhancement of energetic and exergetic performance of embedded twisted rib turbulator over absorber plate of solar air heater
Anup Kumar, Amit Prakash Sen, Rajiv Rajan Kumar, Apurba Layek
E Prime Advances in Electrical Engineering Electronics and Energy, 2023
Owing to present investigation, a stochastic analysis is conducted to numerically optimize the energetic and exergetic efficiencies of embedded twisted rib turbulator over absorber plate of solar air heaters (SAHs). These efficiencies are assessed taking into account temperature rise and design characteristics. The criterion in context to energy efficiency do not take into consideration the pumping force which is needed to blow the air from the duct. Therefore, estimating the energy distribution of solar air heaters becomes a difficult task when evaluating their exergetic or effective efficiency. The experimental work determined the Nu and fr correlations in the term of geometrical configurations which are considered for evaluating the thermal behavior and compared to prior findings with smooth plate. The Optimal turbulator parameters were defined by the exergetic efficiency criterion in terms of the Reynolds and insolation. Maximum improvements in energetic and exergetic efficiencies were reported as ηth=1.81;ηeff=1.79andηII=1.82 times over smooth plate for a geometric arrangement with P/e =8, α =60°, y/e = 3 and Re = 5000. The maximum differences between simulated and experimental results, when taken into account, resulted ±6%. The current methodology also tackles the methods to research novel artificial turbulator to increase the energetic and exergetic performance of a SAHs, making it feasible to develop a design plot for the turbulator parameter without having to spend a lot of money on actual trials.
Effect of heat transfer and pressure drop characteristics on the performance analysis of an artificially roughened solar air heater
Amit Kumar, Apurba Layek
Heat and Mass Transfer Waerme Und Stoffuebertragung, 2023
Experimental Assessment of Thermohydraulic Performance of a Rectangular Solar Air Heater Duct Using Twisted V-Shaped Staggered Ribs
Dheeraj Kumar, Apurba Layek
Journal of Thermal Science and Engineering Applications, 2023
The present experimental effort aims to determine the thermohydraulic performance of a rectangular solar air heater duct with V-shaped ribs staggered over the absorber plate. The performance test is conducted with variable roughness constraints, including relative roughness pitch (P/e) values between 7 and 11, relative staggered distance (d/e) values between 2 and 6, and relative arm length of twisted V-rib (S/e) values between 4.39 and 10.26, and flow Reynolds number values between 3000 and 21,000. The method of liquid crystal thermography is used to observe the dispersion of the Nusselt number over the roughened absorber surface. The maximum Nusselt number and friction factor enhancement ratio for roughened surfaces is determined to be 3.43 and 2.57 times that of a smooth plate, respectively. The parameters of rib configurations are adjusted based on the achieving greatest thermohydraulic performance (THP) index, which corresponds to P/e of 9, d/e of 4, and S/e of 6.15, yielding an optimum thermohydraulic performance measure of 2.69.
Heat Transfer Augmentation of a Solar Air Heater Using a Twisted V-Shaped Staggered Rib over the Absorber Plate
Dheeraj Kumar, Apurba Layek
Journal of Solar Energy Engineering Transactions of the ASME, 2023
Heat Transfer Enhancement of Solar Air Heater Having Twisted V-Shaped Staggered Roughness Over Absorber Plate
Dheeraj Kumar, Apurba Layek
Arabian Journal for Science and Engineering, 2023
Bamboo Fiber-Reinforced Polyester Composites
Dheeraj Kumar, Nadeem Faisal, Ranjan Kumar Mitra, Apurba Layek
Polyester Based Biocomposites, 2023
Nusselt number and friction characteristics of solar air heater roughened with novel twisted V-shaped staggered ribs using liquid crystal thermography
Dheeraj Kumar, Apurba Layek
Renewable Energy, 2022
Thermo-hydraulic performance of solar air heater having winglet type roughness element
Amit Kumar, Apurba Layek
Journal of Thermal Analysis and Calorimetry, 2022
Heat Transfer Measurement in a Rectangular Channel of Solar Air Heater With Winglet-Type Ribs Using Liquid Crystal Thermography
Amit Kumar, Apurba Layek
Journal of Thermal Science and Engineering Applications, 2022
Performance, combustion and emission characteristics of CI engine using waste cooking oil methyl ester - Diesel - ethanol blends
Apurba Layek
International Conference on Electrical Computer Communications and Mechatronics Engineering Iceccme 2022, 2022
Evaluation of the performance analysis of an improved solar air heater with Winglet shaped ribs
Amit Kumar, Apurba Layek
Experimental Heat Transfer, 2022
Parametric analysis of artificial rib roughness for the enhancement of thermohydraulic performance of solar air heater: A review
Dheeraj Kumar, Apurba Layek
Materials Today Proceedings, 2022
Application of liquid crystal thermography for temperature measurement of the absorber plate of solar air heater
Dheeraj Kumar, Ramit Choudhury, Apurba Layek
Materials Today Proceedings, 2022
Renewable energy and sustainable development: A global approach towards artificial intelligence
Nagendra Kumar, Dheeraj Kumar, Apurba Layek, Sunil Yadav
Artificial Intelligence for Renewable Energy Systems, 2022
Energetic and exergetic based performance evaluation of solar air heater having winglet type roughneѕѕ on absorber surface
Amit Kumar, Apurba Layek
Solar Energy Materials and Solar Cells, 2021
Enhancement of mechanical properties of carbon and flax fibre hybrid composites for engineering applications
Dheeraj Kumar, Nadeem Faisal, Apurba Layek, Gaurav Priyadarshi
Aip Conference Proceedings, 2021
Determination of Nusselt Number Over Artificially Roughened Solar Air Heater Using Numerical Approach
Amit Kumar, Dheeraj Kumar, Apurba Layek
Lecture Notes in Mechanical Engineering, 2021
Measurement of Temperature Distribution Using Liquid Crystal Thermography Technique Over the Absorber Plate of Solar Air Heater
Dheeraj Kumar, Amit Kumar, Apurba Layek
Lecture Notes in Mechanical Engineering, 2021
Effect of relative roughness pitch on the performance evaluation of a solar air heater roughened with chamfered rib and groove roughness on the surface plate using CFD technique
Amit Kumar, Apurba Layek, Dheeraj Kumar
Aip Conference Proceedings, 2020
Performance enhancement of single slope solar still integrated with flat plate collector for different basin water depth
Dheeraj Kumar, Apurba Layek, Amit Kumar
Aip Conference Proceedings, 2020
Nusselt number and friction characteristics of a solar air heater that has a winglet type vortex generator in the absorber surface
Amit Kumar, Apurba Layek
Experimental Thermal and Fluid Science, 2020
Nusselt number and friction factor correlation of solar air heater having winglet type vortex generator over absorber plate
Amit Kumar, Apurba Layek
Solar Energy, 2020
Performance characteristics of CI engine using blends of waste cooking oil methyl ester, ethanol and diesel
S. Kathirvel, Apurba Layek, S. Muthuraman
International Journal of Ambient Energy, 2020
Heat Transfer Analysis of a Solar Air Heater Roughened with Chamfered Rib and Groove Roughness on the Absorber Plate Using CFD Approach
Amit Kumar, Apurba Layek, Partha Kumar Mondal
Lecture Notes in Mechanical Engineering, 2020
Cold Chain and Its Application
Dheeraj Kumar, Ravi Kant Singh, Apurba Layek
Management and Industrial Engineering, 2020
Block Chain and Its Application
Dheeraj Kumar, Ravi Kant Singh, Apurba Layek
Management and Industrial Engineering, 2020
Nusselt number and fluid flow analysis of solar air heater having transverse circular rib roughness on absorber plate using LCT and computational technique
Amit Kumar, Apurba Layek
Thermal Science and Engineering Progress, 2019
Energetic and exergetic performance evaluation of solar air heater with twisted rib roughness on absorber plate
Anup Kumar, Apurba Layek
Journal of Cleaner Production, 2019
Performance analyses of mixed mode forced convection solar dryer for drying of stevia leaves
D.V.N. Lakshmi, P. Muthukumar, Apurba Layek, Prakash Kumar Nayak
Solar Energy, 2019
Performance comparison of mixed mode and indirect mode parallel flow forced convection solar driers for drying Curcuma zedoaria
Durga V. N. Lakshmi, Palanisamy Muthukumar, Jasinta P. Ekka, Prakash K. Nayak, Apurba Layek
Journal of Food Process Engineering, 2019
Thermo-hydraulic performance of roughened solar air heater by design of experiment and meta-heuristic approach
Anup Kumar, Apurba Layek
Thermal Science and Engineering Progress, 2019
An exposition on the results of utilizing biogas as an alternative fuel on the attributes of internal combustion engines
International Journal of Renewable Energy Research, 2019
Mapping of flow visualization and heat transfer analysis over roughened plate inside rectangular duct
Anup Kumar, Apurba Layek
Advances in Intelligent Systems and Computing, 2019
Nusselt number and friction factor correlation of solar air heater having twisted-rib roughness on absorber plate
Anup Kumar, Apurba Layek
Renewable Energy, 2019
Heat transfer measurement in rectangular channel with detach ribs by liquid crystal thermography
Sibendra Kumar Gharai, Apurba Layek
International Journal of Heat and Technology, 2018
Experimental study of the effect of compression ratio on the characteristics of a biogas fueled dual fuel compression ignition engine
International Journal of Renewable Energy Research, 2018
Thermo-hydraulic performance of solar air heater having twisted rib over the absorber plate
Anup Kumar, Apurba Layek
International Journal of Thermal Sciences, 2018
Nusselt number-friction characteristic for a twisted rib roughened rectangular duct using liquid crystal thermography
Anup Kumar, Apurba Layek
Experimental Thermal and Fluid Science, 2018
Performance analysis of a mixed mode forced convection solar dryer with and without thermal energy storage heat exchanger
D.V.N. Lakshmi, A. Layek, P Muthukumar
Iop Conference Series Materials Science and Engineering, 2018
Evaluation of Convective Heat Transfer Coefficient of Herbs Dried in a Mixed Mode Solar Dryer
D.V.N. Lakshmi, Apurba Layek, Palanisamy Muthukumar
Proceedings of the Conference on the Industrial and Commercial Use of Energy Icue, 2018
Drying kinetics and quality analysis of black turmeric (Curcuma caesia) drying in a mixed mode forced convection solar dryer integrated with thermal energy storage
D.V.N. Lakshmi, P. Muthukumar, Apurba Layek, Prakash Kumar Nayak
Renewable Energy, 2018
Exergetic analysis of basin type solar still
Apurba Layek
Engineering Science and Technology an International Journal, 2018
Effect of depth and salinity of basin water on performance of solar still
Apurba Layek
IEEE Region 10 Annual International Conference Proceedings TENCON, 2017
Comparison of performance of artificially roughened solar air heaters
International Journal of Mechanical Engineering and Technology, 2017
Exergetic efficiency of basin type solar still
Apurba Layek
Aip Conference Proceedings, 2017
Performance Analysis of Trapezoidal Corrugated Solar Air Heater with Sensible Heat Storage Material
D.V.N. Lakshmi, Apurba Layek, P. Muthu Kumar
Energy Procedia, 2017
Exploration of waste cooking oil methyl esters (WCOME) as fuel in compression ignition engines: A critical review
S. Kathirvel, Apurba Layek, S. Muthuraman
Engineering Science and Technology an International Journal, 2016
Engine performance and emission having jatropha-diesel blend
International Journal of Renewable Energy Research, 2016
Performance of a direct injection diesel engine using Jatropha diesel blends as fuel
Apurba Layek
Applied Mechanics and Materials, 2014
Performance evaluation of solar air heater having chamfered rib groove roughness on absorber plate
Apurba Layek, Swapan Paruya, Samarjit Kar, Suchismita Roy
Aip Conference Proceedings, 2010
Augmentation of heat transfer coefficient using chamfered rib-groove compound roughness on absorber plate of solar air heater
International Journal of COMADEM, 2010
Effect of chamfering on heat transfer and friction characteristics of solar air heater having absorber plate roughened with compound turbulators
Apurba Layek, J.S. Saini, S.C. Solanki
Renewable Energy, 2009
Heat transfer and friction characteristics for artificially roughened ducts with compound turbulators
Apurba Layek, J.S. Saini, S.C. Solanki
International Journal of Heat and Mass Transfer, 2007
Second law optimization of a solar air heater having chamfered rib-groove roughness on absorber plate
Apurba Layek, J.S. Saini, S.C. Solanki
Renewable Energy, 2007

RECENT SCHOLAR PUBLICATIONS

Numerical investigation on the performance of solar air heater having staggered semi-frustum roughness on the absorber plate
R Choudhury, A Layek, S Yadav, A Sharma
Thermal Science and Engineering Progress, 104167 , 2025
2025
Citations: 2
Maximizing thermohydraulic performance of solar air heaters with staggered v-ribbed surfaces using metaheuristic algorithms
D Kumar, SS Deshmukh, A Layek
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2025
2025
Citations: 1
Impact of compression ratio, fuel injection pressure and timing on the behaviour of compression ignition engine operating with ethanol-enriched WCOME blends
A Layek
International Journal of Ambient Energy 45 (1), 2384966 , 2024
2024
Citations: 2
Enhancement of thermal efficiency and development of Nusselt number correlation for the solar air heater collector roughened with artificial ribs for thermal applications
D Kumar, A Layek, A Kumar
Environmental Science and Pollution Research 31 (53), 62427-62441 , 2024
2024
Citations: 14
Experimental study for the enhancement of heat transfer characteristics and development of thermal correlations of a roughened solar collector
D Kumar, R Kumar, A Layek
Heat Transfer 53 (3), 1628-1659 , 2024
2024
Citations: 1
Important of biodiesel and its challenges in CI engine
BN Mohanty, A Layek
AIP Conference Proceedings 3037 (1), 020040 , 2024
2024
Citations: 1
Experimental study for the enhancement of thermal efficiency and development of Nusselt number correlation for the roughened collector of solar air heater
D Kumar, A Layek, A Kumar, R Kumar
Journal of Thermal Science and Engineering Applications 16 (2), 021004 , 2024
2024
Citations: 19
Bamboo Fiber-Reinforced Polyester Composites
D Kumar, N Faisal, RK Mitra, A Layek
Polyester-Based Biocomposites, 67-82 , 2023
2023
Citations: 1
The enhancement of energetic and exergetic performance of embedded twisted rib turbulator over absorber plate of solar air heater
A Kumar, AP Sen, RR Kumar, A Layek
e-Prime-Advances in Electrical Engineering, Electronics and Energy 5, 100212 , 2023
2023
Citations: 13
5 Thermal analysis, evaluation of economic feasibility and energy matrices (TE2 analysis) of domestic type single slope solar still
D Kumar, R Choudhury, A Kumar, A Layek
Emerging Trends in IoT and Computing Technologies: Proceedings of … , 2023
2023
Thermal analysis, evaluation of economic feasibility and energy matrices (TE2 analysis) of domestic type single slope solar still
D Kumar, R Choudhury, A Kumar, A Layek
Emerging Trends in IoT and Computing Technologies, 26-32 , 2023
2023
Citations: 1
Effect of heat transfer and pressure drop characteristics on the performance analysis of an artificially roughened solar air heater
A Kumar, A Layek
Heat and Mass Transfer 59 (5), 891-907 , 2023
2023
Citations: 18
Experimental assessment of thermohydraulic performance of a rectangular solar air heater duct using twisted V-shaped staggered ribs
D Kumar, A Layek
Journal of Thermal Science and Engineering Applications 15 (4), 041009 , 2023
2023
Citations: 8
Heat transfer augmentation of a solar air heater using a twisted V-shaped staggered rib over the absorber plate
D Kumar, A Layek
Journal of Solar Energy Engineering 145 (2), 021013 , 2023
2023
Citations: 20
Heat transfer enhancement of solar air heater having twisted v-shaped staggered roughness over absorber plate
D Kumar, A Layek
Arabian Journal for Science and Engineering 48 (3), 3931-3946 , 2023
2023
Citations: 5
Nusselt number and friction characteristics of solar air heater roughened with novel twisted V-shaped staggered ribs using liquid crystal thermography
D Kumar, A Layek
Renewable Energy 201, 651-666 , 2022
2022
Citations: 35
Performance, combustion and emission characteristics of CI engine using waste cooking oil methyl ester-diesel-ethanol blends
A Layek
2022 International Conference on Electrical, Computer, Communications and … , 2022
2022
Citations: 1
Thermo-hydraulic performance of solar air heater having winglet type roughness element: A. Kumar, A. Layek
A Kumar, A Layek
Journal of Thermal Analysis and Calorimetry 147 (19), 10481-10495 , 2022
2022
Citations: 12
Evaluation of the performance analysis of an improved solar air heater with Winglet shaped ribs
A Kumar, A Layek
Experimental Heat Transfer 35 (3), 239-257 , 2022
2022
Citations: 50
Heat transfer measurement in a rectangular channel of solar air heater with winglet-type ribs using liquid crystal thermography
A Kumar, A Layek
Journal of Thermal Science and Engineering Applications 14 (4), 041006 , 2022
2022
Citations: 19

Apurba Layek

EDUCATION

RESEARCH INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS