Anil Singh Yadav

• PhD
• Associate Professor at 𝐁𝐚𝐤𝐡𝐭𝐢𝐲𝐚𝐫𝐩𝐮𝐫 𝐂𝐨𝐥𝐥𝐞𝐠𝐞 𝐨𝐟 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 Bakhtiyarpur, Patna, Bihar, India

A numerical investigation of turbulent flows through a solar air heater roughened with semicircular sectioned transverse rib roughness has been executed. The physical problem is represented mathematically by a set of governing equations, and the transport equations are solved using the finite element method. The numerical results show that the flow...

Solar air heater is the cheapest and extensively used solar energy collection device for drying of agricultural products, space heating, seasoning of timber and curing of industrial products. The use of an artificial roughness on a surface is an effective technique to enhance the rate of heat transfer to fluid flow in the duct of a solar air heater...

In this paper, the effect of rib (circular sectioned) spacing on average Nusselt number and friction factor in an artificially roughened solar air heater (duct aspect ratio, AR = 5:1) is studied by adopting the computational fluid dynamics (CFD) approach. Numerical solutions are obtained using commercial software ANSYS FLUENT v12.1. The computation...

The use of artificial roughness in the form of repeated ribs on a surface is an effective technique to enhance the rate of heat transfer. A numerical investigation on the heat transfer and fluid flow characteristics of fully developed turbulent flow in a rectangular duct having repeated transverse square sectioned rib roughness on the absorber plat...

Solar air heater is a type of heat exchanger which transforms solar radiation into heat energy. The thermal performance of conventional solar air heater has been found to be poor because of the low convective heat transfer coefficient from the absorber plate to the air. Use of artificial roughness on a surface is an effective technique to enhance t...

The current investigation’s objective is to compare various pentanol/biogas/diesel fuel mixes’ performance and exhaust parameters in a dual fuel engine. The varied flow rates of gaseous fuel (10, 20, and 30 L per minute) and pentanol fractions (10, 15, and 20%) in conventional diesel at various engine loads (20, 60, and 100%) were studied. Response...

The integration of solar stills with materials capable of changing the phase and acting as storage for latent heat is an effective option for producing potable water from brackish water. Nevertheless, no single organic phase change material exhibits all the necessary advantageous properties, such as a particular temperature of melting and latent he...

Reducing wastewater contaminants is an emerging area of particular concern for many industrialized and developing countries in improving the ecological quality of their water sources. In this case, the use of algae-based microbial reactors for wastewater treatment has attracted increasing attention in recent years. The advantages of both convention...

This manuscript endeavors to elucidate a comprehensive analysis for the assessment of thermal efficiency in double pass solar air collectors augmented with fabricated roughness, instrumental in the generation of heated air for applications in heating and drying. The analytical procedure delineates comparisons between a smooth and a double‐sided, ro...

The global energy demand is expected to rise due to improved living standards, population growth, and urbanization. It underscores the need to explore alternative energy sources. Biodiesel, derived from renewable feedstock, is considered a promising solution to meet future energy needs while addressing concerns about dwindling fossil fuel reserves...

Solar Thermal Collectors have been growing in demand due to their efficiency of converting the solar energy into electrical energy without producing any form of waste or pollution. Thus, a number of research projects are being conducted in the field of enhancing the performance of the solar thermal collectors. Enhancing the heat dissipation through...

The thermal load on wire electrode in a wire electrical discharge machining (WEDM) is the most important factor in predicting wire electrode breakage. Thermal failure of wire electrode may be expected when the maximum temperature of the wire crosses a critical value. The maximum temperature of wire electrode is a function of process parameters of t...

Quality and productivity have been used as terms to control process parameters and lower process defects. Several defects emerge when products are manufactured using the compression moulding process.Since the second-largest industrial process used to produce plastic goods and also the most popular method of producing thermoset and thermoplastic pol...

An overview of the significant innovations in photocatalysts for H2 development, photocatalyst selection criteria, and photocatalytic modifications to improve the photocatalytic activity was examined in this Review, as well as mechanisms and thermodynamics. A variety of semiconductors have been examined in a structured fashion, such as TiO2-, g-C3N...

Although desalination methods have been extensively used, many of them need substantial installations and access to sophisticated infrastructure to generate fresh water. The solar still uses 0.2% reduced graphene/cerium oxide nanoparticles as a hybrid nanoparticle material and it uses coated absorber solar still. The hybrid nanomaterial is embedded...

Presents innovative works in the field of computational intelligence and security Provides results of UNI-TEAS 2024 held in Jaipur, Rajasthan, India Serves as a reference for researchers and practitioners in academia and industry

Use of nanoparticles to increase the rate of heat transfer is one way to enhance the thermal characteristics of phase change materials (PCM). In this investigation, the thermal parameters of paraffin composites such as thermal conductivity, density, latent heat and temperatures are measured. Nanoparticles of molybdenum oxide (MoO2) were added at co...

An exponential rise in the population, increases greenhouse gas (GHG) emissions through different human activities and has raised serious concern about climate change and global warming. This has also resulted in a sharp increase in the gap between the demand and supply of energy. It turns aggravated the need for the usage of non-exhaustible source...

Nanoparticles have shown great potential in improving the performance of solar air heaters (SAH). The nanoparticles coating on the surface of the absorber plate improves thermal efficiency, heat transfer rate, and durability of SAH. The most common nanoparticles in SAHs are metal oxides, carbon, and metal. The current work focuses on enhancing SAH...

This study aims to improve the heat transfer performance of radiators in automobiles using water-based Al2O3 and ethylene glycol (EG) nanofluid. Three water-based nanofluids with different concentrations of Al2O3 and EG were evaluated and compared with base water. The three selected concentrations of EG were 30%, 50% in water (by volume) without Al...

The usage of graphene-based materials (GMs) as energy storage is incredibly popular. Significant obstacles now exist in the way of the generation, storage and consumption of sustainable energy. A primary focus in the work being done to advance environmentally friendly energy technology is the development of effective energy storage materials. Due t...

Underfloor air distribution, also known as UFAD, is a technique of providing the space conditioning in offices as well as other public spaces. Because of the substantial benefits which it can provide, it is progressively being regarded as a major alternative to the conventional ceiling-based air distribution systems. This is due to the fact that th...

The energy collected from various renewable resources, such as sunlight, geothermal warmth, wind, and water, is referred to as renewable power. The sun is the ultimate source of vitality. Solar radiation vitality can be utilized in many functions, such as heating buildings and dusty foliage crops, dying chicken, wood taste, and treating modern elem...

In this study, heat transfer through free convection mode across circular fins on a vertical cylinder is investigated. The analysis encompasses both laminar (10⁴ < Ra < 10⁸) and turbulent (10¹⁰ < Ra < 10¹²) regimes, varying the Rayleigh number (Ra) from 1.135 E11 to 1.773 E11. Extensive computations are conducted for different dimensionless fin dia...

Adding renewable energy sources to an existing power system is one way to increase the power output of that system and make it more efficient. This study investigates the thermodynamics of a triple power cycle that combines Gas Turbine (GT), Rankine cycle (RC), and Kalina cycle (KC) with Solar and Biomass assistance. For topping cycle, an existing...

Higher density heat flux is the major cause of damage to the electronic component; therefore, cooling such components are of the utmost importance to operate in a safe zone and to increase their life. For this purpose, Microchannel heat sinks (MHSs) are among the most practical methods for dissipating unwanted heat. In this regard, the novel lozeng...

Due to urbanisation, the reuse of scrap tyres in the form of energy has gained attention for the disposal of waste tyres. Among the numerous methods, pyrolysis appears to be possible, appealing and viable for generating products such as pyrolysis oil, which can be combined with petroleum oils and used as a source of energy. In a prior study, a mixt...

In order to convert solar energy into thermal energy, solar air heater (SAH) is commonly used. These are used to convert the solar radiation into heat of working fluid. The effect of various geometric constraints on the friction characteristics and heat transfer (HT) of a SAH has been studied. The paper aims to introduce the various parameters that...

A Titanium superalloy BT20L is machined using electrical discharge machining (EDM). In this research paper, parameter optimization for material removal rate (MRR), surface roughness (SR), tool wear rate (TWR) and radial overcut (ROC) is done using the Jaya algorithm (JA). The objective is to maximize the MRR and to minimize SR, ROC and TWR. Respons...

The flat plate solar heat collector captures solar thermal energy for agricultural drying, heating houses and businesses, cooling food, and producing steam. Adding twisted tape inserts to the absorbent surface of a flat plate solar heat collector increases its efficiency. This article describes the absorber plate of twisted tape inserts and discuss...

In this review paper, it is well established that high carbon high silicon steels on austempering result in carbide free bainite (CFB) which exhibits enhanced mechanical and tribological properties without adding any heavy alloying elements. Most of the research has been pointed out regarding the improvement of CFB steels that consists of the fine...

A pragmatic shift has been ongoing for the metal development of industrialization for the last several decades. In various engineering and industrial applications, there is a high demand for materials with high tensile strength and ductility. This demand can be met by instilling carbide-free bainitic in high silicon steel. The proposed steel type i...

The urge to obtain an excellent combination of properties in one material causes the development of new material. Present research work coincides with this mind set. The research work has involved the development of aluminum alloy hybrid composite using Al6061 as matrix and silicon nitride (Si3N4) and silicon carbide (SiC) as hybrid reinforcement p...

Photovoltaic Thermal (PVT) system is a combination of a photovoltaic (PV) panel and a thermal collector where the photovoltaic panel converts a part of solar radiation into electricity whereas the thermal collector converts the remaining solar radiation into useful heat. Such a system produces higher electrical output along with thermal gain which...

The agriculture sector is the backbone of India’s economy and has shown the strong correlation between economic growth and agricultural development. There is a need for a new and effective technology that can improve the efficiency and profitability of our farming systems. One of the most common technologies is the green house. A greenhouse, also r...

The lightweight, low-density, and low-cost natural polymers like cellulose, chitosan, and silk have good chemical and biodegradable properties due to their individually unique structural and functional elements. However, the mechanical properties of these polymers differ from each other. In this scenario, chitosan lacks good mechanical properties t...

The solar air heater (SAH) is the solar energy collecting device that is the most common and widely used for drying agricultural goods, room heating, seasoning of timber, and curing industrial items. It is also the cheapest solar energy collection device. To increase the amount of heat that is transferred to the fluid which is moving through the du...

The thermal performance of a solar air heater (SAH) is enhanced by producing air turbulence. The air turbulence is created by using either extended surface or iron filing between the black colour absorber plate and glass of the SAH. In this article, the thermal performance of a SAH in the case of without fins and with fins at a different location i...

In recent research activities, autonomous vehicles and self-driving technology have gained lot of attention among scientists. The idea of autonomous vehicles can be anticipated in the 1920s when the design of the first radio-controlled vehicles was in progress. Autonomous vehicles are going to be the trend of the future in this modern era of automa...

Electronic gadgets have been designed to incorporating very small components such as microcontrollers, electronic chips, transistors, microprocessors, etc. These components are exceptionally heat sensitive and can be wrecked if heat is not released. As a result, the thermal control of such components is critical to their optimum performance and ext...

The environment demands a reduction in greenhouse gas (GHG) emissions, as building and construction are responsible for more than 40% of the energy consumed worldwide and 30% of the world’s GHG emissions. Many countries have aligned themselves with the Paris agreement, following its target of achieving net zero carbon emissions, although some gover...

In this paper, the impact of an extended surface on the passage of a microchannel using cylindrical ribs with variable sector angles on heat transfer rate is presented using computer simulation. Extended surfaces in the form of cylindrical ribs of varying sector angles in the passage of microchannel in a staggered manner have been designed. The sid...

Solar air heating devices have been employed in a wide range of industrial and home applications for solar energy conversion and recovery. It is a useful technique for increasing the rate of heat transfer by artificially creating repetitive roughness on the absorbing surface in the form of semicircular ribs. A thermo-hydraulic performance analysis...

The term “thermal comfort” gained recognition with the advancement of HVAC systems. Thermal comfort is explained by the American Society of Heating Refrigeration and Air Conditioning Engineers as “the mind state which incorporates satisfaction with respect to contact atmosphere”. Thermal comfort disturbs the consumption of energy for the HVAC syste...

Due to social development and industrial evolution, the waste generated by human activities are growing continuously. Municipal solid waste (MSW) is growing with the increase of population, and it is estimated to increase 5% every year. The MSW has a negative impact on the environment in many ways, comprising its contribution to the rising climate...

Due to increase in population and augmented usage of conventional fuels; raised interest among scientist to find some potential substitute of conventional fuels for sustainable development, because these fuels are limited and also non-renewable. Many alternative fuels such as biodiesel, ethanol, methanol, synthetic fuels, hydrogen, biogas, natural...

In this article, an absorber plate of solar air heater attached with a combination of opposite apex triangular cross-sectioned rib roughness is experimentally analyzed. A series of experiments are carried out to investigate the turbulent airflow for various rib arrangements. This study aims to find effect of pitch of rib roughness element on the he...

The energy sustainability is one of the recent fields of research among scientist and engineers throughout the world. Solar energy is abundantly available and can be used to generate power. A major problem faced by technologies using solar radiation for energy generation is the unavailability of sunlight during night hours or when the sky-view has...

Internal combustion (IC) engines have been an underlying part of our civilization since their invention. Internal combustion engines play major role in transport of goods and humans. Use of renewable and cleaner fuels in IC engines are recommended due to the depletion of fossil fuels and its harmful impact on environment. Biodiesel has been conside...

After the oil price rise in 1973, and the increased global pollution; individual, social and national life and economy were largely affected by the increasing cost of energy. Rapidly increasing prices of petroleum, its crisis, and uncertainties regarding the availability of petroleum have serious effect on the development of economy all over the wo...

Solar air heaters are widely used in industrial areas due to their economical design. However, their low thermal efficiency makes them unsuitable for transporting thermal energy. The usefulness of a solar air heater (SAH) can be boosted by applying ribs on the absorbing surface. To measure the heat transfer (HT) rate and friction factor (fr), the a...

Despite the limitations of conventional energy sources, the current energy scenario is still biased towards the use of these resources. Solar energy is regarded as a vital component of sustainable energy development due to its environmental friendliness and abundant resources. Solar air heaters (SAHs) are devices that convert solar energy into ther...

With the aid of the solar heater collectors, the thermal energy is collected and transformed into heat. The friction and heat transfer features are significantly influenced by the collector’s cross-sectional shape. Using a computational technique, the performance of a triangle duct solar heat collector (TDSHC) roughened with 450 protrude and dimple...

The use of baffles, fins, ribs, and grooves in the solar air heater (SAH) improves heat transfer (HT). Various efforts were made to improve heat transfer rates through duct using these components. As a result, significant pressure drop has also been observed due to these components. This article attempts to describe and conclude experimental invest...

A coating on the roughened absorber surface of a solar air heater can improve its efficacy. This paper presents the results of a comparative study of nanomaterial and hybrid nanomaterial coatings on the roughened absorber surface to improve the performance of a solar air heater. The solar heater is designed to assess heat transfer rate, thermal eff...

A coating on the roughened absorber surface of a solar air heater can improve its efficacy. This paper presents the results of a comparative study of nanomaterial and hybrid nanomaterial coatings on the roughened absorber surface to improve the performance of a solar air heater. The solar heater is designed to assess heat transfer rate, thermal eff...

Solar air heating is a type of renewable energy heating technology that uses the sun's insolation to convert the energy into air. It is commonly used in commercial and industrial buildings to provide air conditioning and heating. Enhancing the effectiveness of a solar air heater (SAH) system by adding ribs to its surface is a great way to save mone...

Due to their light weight and cast ability, cast aluminium alloys are gradually being used in aerospace and automotive applications. Welding aluminium castings together for variety of applications is very critical. Due to the existence of hot cracking, porosity and distortion, these alloys are difficult to fuse using conventional fusion welding tec...

Adding ribs to a solar air heater duct's surface is an excellent means of increasing the efficiency of the system. In this article, a SAH with circular and semi-circular rib roughness is numerically analysed. This study is carried out in ANSYS Fluent v16 using the RNG k-ε turbulence model. For momentum and energy equations, the second-order upwind...

To assess the influence of artificial roughness on heat transfer in solar air heater ducting, a variety of alternative approaches have been used to investigate the problem. In this article, an absorber plate of SAH attached with rib roughness is numerically analysed. Adding ribs to a solar air heater duct's surface is an excellent means of increasi...

Energy is the driving force of the cosmos. Mechanical, electrical, chemical, and radiation energy are some of the numerous kinds of energy. One of such form is solar radiation energy. Soar air heating uses sunlight thermal energy to heat air. It is commonly used for heating air in buildings and industrial processes. It has an insulating rear plate,...

Solar air heating is a type of heating that uses the sun's energy to heat air. This technology is most commonly used in commercial and industrial processes. A SAH is simple to install and operates efficiently. However, it is simple to maintained and is usually not energy-efficient. A SAH's poor efficiency is caused by the development of a laminar s...

In the present paper, an even span roof-shaped greenhouse dryer’s thermal performance has been experimentally evaluated under no-load condition. The objective of the work is to evaluate the various heat transfer parameters inside greenhouse dryer so that proper crops would be selected for drying purposes. The average set value of air mass rate used...

Soar air heating uses sunlight thermal energy to heat air. It is commonly used for heating air in buildings and industrial processes. This technology is the most cost-effective and efficient among all solar thermal solutions. Solar air heat technology can help minimize the carbon footprint of traditional heat sources by supplying electrical energy...

This research paper is concerned with a detailed theoretical parametric analysis to optimize the depth of duct (bed) of blackened wire-screen matrices packed bed solar collector (PBSC) and obtained results are compared with plane collector. The two kinds of woven wire-screens are used in a plate of PBSC. The different mass flow rates of air pass th...

The major problem regarding machining of nickel-based superalloy such as Hastelloy C-276 is high tool wear for prolonged operation due to work hardening effect and the surface roughness which directly affects the performance of machined component during its application. In this study, the Design of Experiments (DOE) has been used to study the effec...

A new CFD-based correlation for rib roughened solar air heater is presented in this paper. An absorber plate of SAH attached with transverse semicircular ribs is analyzed in this article. ANSYS Fluent v16 is utilized to analyze the turbulent airflow for different arrangements of rib. All results are based on CFD simulations. The analysis is perform...

The present study aims to increase the heat gain of a solar air heater (SAH) operated at a high mass flow rate of air. The new type of double-pass type solar air heater (DPSAH) is designed and experimented on four consecutive days. The performance of a designed air heater is also compared with a conventional single-pass air heater (SPSAH) having th...

In the present work, analysis of intake swirl is carried out on a single cylinder, direct injection diesel engine to determine the effect of swirl ratio on engine performance. A two dimensional CAD model was built to predict the pressure, temperature and velocity variation of air entering the cylinder during the suction and compression strokes of a...

A numerical simulation of a solar air heater (SAH) with transverse equilateral triangular ribbed surface is carried out. The rib-pitch (P) and rib-height (e) ratio P/e 14.29, rib height and hydraulic diameter (D) of the duet ratio (e/D) are 0.021 to 0.042 and Reynolds number (Re) is 3800–18,000. The thermal and flow properties are investigated thro...

Graphene exhibits excellent distinct characteristics due to their lightweight and honeycomb structure. Due to these unique properties, graphene attracted number of researchers from diversified fields. Its applications are found in opto-electronics, electronics and biomedical sectors. These nanomaterials show some toxicity effects for biomedical app...