Soumya Sanjeeb Mohapatra's research while affiliated with National Institute of Technology Rourkela and other places

Publications (40)

Article
The escalating consumption of crude oil, driven by rapid industrialization, poses a significant threat to terrestrial and marine ecosystems. Addressing the treatment of oily wastewater is imperative, given the environmental consequences and the loss of oil feedstock. Methods such as centrifugation, gravity separation, and chemical–physical membrane...
Chapter
Droplet impact on the liquid surface with sufficient impact strength results in splashing; it is an undesirable parameter in many applications, especially in the case of fire extinguishing. To design the fire extinguishing equipment, one must know the droplet impacts characteristics before starting the fire extinguishing. Both the miscible and immi...
Article
Full-text available
Industrialisation and car ownership have increased the crude oil consumption. However, this tremendous consumption of oil destroys terrestrial and marine ecosystems and depletes vast oil fuel sources. Thus, treating this complex oily wastewater efficiently is crucial yet difficult. Gravity separation is the most frequent method for separating oil a...
Article
By altering the thermophysical properties of the coolant in the favourable direction of heat transfer, augmentation is achieved in the case of spray cooling in transition boiling. The above-stated thermophysical properties were varied, and the critical limit of maximum heat transfer was determined. In the current work, using various additives, the...
Article
Full-text available
The marine natural ecosystem suffers substantial damage from industrial oily wastes. Various mechanisms such as adsorption, aeration, sedimentation, screening, disinfection, and chemical oxidation have been proposed in the literature to treat oily waste water. The suggested approach to the aforementioned treatment comes at a significant expense. Th...
Article
The utilization of the additives in a coolant is a challenge for the current generation researchers. Therefore, in the current investigation, an effort has been made to develop a coating after the deposition of the Al 2 O 3 nanoparticle. Before the deposition, the nanofluid has been characterized using XRD, TEM, and cryo-TEM techniques. After the f...
Article
In case of dropwise evaporation process, the significant reduction of the Leidenfrost effect has been a challenging task for the current generation research due to the counter current characteristics of drag and inertial forces. The alignment of the above stated forces in one direction reduces the Leidenfrost effect significantly as the vapour flow...
Article
In the current work, using upward spray and NaCl added water, the Leidenfrost effect is significantly minimised in an ultrafast regime by cooling on a hot moving plate, and the heat removal enhancement rate is achieved at 2.15 times of water. The salt deposition on the steel augments CHF(Critical Heat Flux) and IHF(Initial Heat Flux) by bridging th...
Article
Attaining high heat flux around 900°C temperature has been challenging for current generation researchers. Although the literature has identified several quenching methods, including upward-facing spray, downward-facing spray, and both-sides spray, upward-facing spray cooling is the most efficient. The coolant's thermophysical properties may improv...
Article
Full-text available
The development of modern cutting-edge technology relies heavily on the huge success and advancement of nanotechnology, in which nanomaterials and nanostructures provide the indispensable material cornerstone. Owing to their nanoscale dimensions with possible quantum limit, nanomaterials and nanostructures possess a high surface-to-volume ratio, ri...
Article
In the current investigation, an elemental mixture of equiatomic Ni and Ti was deposited on mild steel substrate by atmospheric plasma spray technology by varying three primary gas flow rates 35, 40, and 45 lpm. After successful coating formation, the adhesion property of the coating was investigated. The SEM morphologies of the surface and interfa...
Article
We designed and modelled a fluidized bed dryer. Based on the literature, modelling of a bed dryer is carried out for two situations: for spherical and non-spherical particles. Two case studies were taken from the literature for modelling the fluidized bed dryer for naphthalene balls and mushroom slices. Fluidized bed dryer design was carried out wi...
Article
The low flow rate laminar water jet is the most economical and efficient cooling methodology; however, the low heat removal capacity makes this process inappropriate for fast cooling operations. In the current work, the heat transfer rate has been increased by enlarging the stagnation zone length. This was attained by reducing the viscosity, surfac...
Preprint
Full-text available
The kinetic studies on co-pyrolysis of sugarcane bagasse, and expanded polystyrene (waste thermocol) was performed using a thermogravimetric analyzer to decipher the mechanism of co-pyrolysis at 5, 10, 15, and 20°C min ⁻¹ and to estimate the kinetic triplet and thermodynamics of the co-pyrolysis process. The kinetic parameter values were estimated...
Article
Full-text available
Without hindering the taste, making a cigarette less harmful by reducing the percentage of toxic and carcinogenic compounds in the smoke of the cigarette is a challenging task for the current generation of researchers. In the current work, by implementing mechanical, chemical and combined modification techniques, the above stated is tried to mitiga...
Article
Full-text available
The flexible strain sensors have potential applications in advanced electronics, health monitoring systems, wearable sensors, robotics, and human-machine interfaces. The development of highly sensitive, stretchable and durable strain sensors is a challenging task for researchers. However, the sensors with a detection range from large strain to minu...
Preprint
Full-text available
The large amount of wastewater generated from textile industries, petroleum industries, chemical industries contains heavy metals, suspended solids, hazardous waste, oils, fatty acids, dyes, pigment etc. It is very important to improve the quality of contaminated water before it discharges into the water sources or use. In the current work, an effi...
Article
In the current work, the activated carbon has been prepared from a resource which is considered as the waste and ecofriendly. In addition to above, the used raw material also does not contain the polluting element such as Sulphur or any others. The activated carbon prepared from dried ridge gourd (scrubbing sponge-luffa) by chemical activation meth...
Article
For the identification of role of slip and no slip conditions at the solid-liquid interface in case of hydrophobic, superhydrophilic and superhydrophobic surfaces, the experimentally determined velocity profiles are analysed. Before experimentation, each surface was characterized by using SEM, 2D and 3D Surface profilometer. The impact mapping resu...
Article
In the work, an elemental mixture of Ni and Ti was deposited by atmospheric plasma spray technology on the mild steel substrate by varying the process parameters such as primary gas flow rate and plasma arc current. The properties such as surface roughness, microhardness, and erosion rate of the coating were determined and the relationship between...
Preprint
Full-text available
Without hindering the taste, making a cigarette less harmful by reducing the percentage of toxic and carcinogenic compounds in the smoke of the cigarette is the challenging task for the current generation researchers. In the current work, by implementing mechanical and chemical modification techniques, the above stated is tried to mitigate. In addi...
Chapter
Full-text available
Wear is the damaging, gradual removal or deformation of material at solid surfaces. Causes of wear can be mechanical or chemical. The study of wear and related processes is known as tribology. Abrasive wear alone has been estimated to cost 1-4% of the gross national product of industrialized nations. The current chapter focuses on types of wear phe...
Article
For the simultaneous attainment of enhancement and uniformity in temperature distribution in case of quenching performed in transition and nucleate boiling regimes, the heat treatment is performed by adopting thin coolant flow boiling methodology which depicts high replacement rate of vapour and low coolant consumption rate in comparison with the o...
Article
In the current work by using very low mass flux co-axial laminar multiphase fluid jet, enhancement in heat transfer rate, uniformity in heat flux distribution, and reduction in coolant consumption rate characteristics are simultaneously tried to achieve in case of cooling from a very high initial temperature (900 °C). The information on quenching t...
Article
In the current work, by using various additives, the spray cooling in the transition boiling regime is significantly augmented due to the vapor film instability enhancing, which helps to overcome the disadvantages reported in the open literature for the attainment of high heat flux in the aforesaid boiling regime. Saline water containing dissolved...
Conference Paper
Erosion is a severe wear phenomenon of compressor blade in aircraft where continuously solid dust particles strike the surface. So coating is essential to increase the life of the blade materials as well as the casing. In the aircraft engine, we have to keep focus on high wear resistance and high temperature resistant before choosing the materials...
Article
In the absence of disadvantages of various cooling methodologies reported in the literature, in the current work, enhancement at high temperature by using low mass flux spray recommended for cooling of thin strip is achieved. By decreasing the droplet renewal rate and augmenting the residence time, the aforesaid has been achieved. In the current wo...
Article
Hollow particle-drag coefficient data is valuable for designing many transport processes. However, limited published work in this regard has motivated us to perform the present work. The present work encompasses experimental terminal velocity, V and estimated drag coefficient, CD of Raschig Ring settling under gravity in Newtonian fluids for 0.2984...
Article
Atmospheric plasma spraying (APS) is one of the most widely used thermal spraying technique which finds a lot of applications due to its versatility of spraying a wide range of materials from metallic to nonmetallic and hence more suitable for spraying of high melting point materials like refractory ceramics material, cermets etc. In recent era,any...
Article
The effect of blockage ratio i.e. ratio of diameter of cone, d and flow channel, D on the drag coefficients due to Newtonian fluid flow over cone is studied numerically by solving the CFD equations in Ansys FLUENT. The drag coefficients (CD) as a function of Reynolds number (Re) and d/D are reported in the range of Re: 0.01-30000 and d/D: 0.0015-0....
Article
This work included the experimental studies of the Newtonian fluid flow over hollow frustum both in the normal and inclined channel. It encompasses terminal velocity and drag coefficient, CD data for 0.13≤Re≤8.41, 0.19 (≤d_o)⁄D≤0.33 , 0.22 (≤d_i)⁄d_o ≤0.83 and 〖40〗^o≤θ≤〖90〗^o. The effect of inner diameter to outer diameter ratio, di/do and the oute...
Article
Full-text available
In this paper, the superhydrophobic coatings on aluminium surfaces were prepared by two-step (chemical etching followed by coating) and one-step (chemical etching and coating in a single step) processes using potassium hydroxide and lauric acid. Besides, surface immersion time in solutions was varied in both processes. Wettability and surface morph...

Citations

... Exploring the migration law of granular flow modulators is crucial, and computational fluid dynamics (CFD) has proven to be an effective tool for accurately simulating liquid flow at a macroscopic scale [21][22][23][24]. In addition, the discrete element method (DEM) is a widely used particle simulation technology that can accurately describe the real-time motion state of individual particles [25][26][27][28]. ...
... This is because the functional groups on the GO surface can react with the Si-OH groups hydrolyzing from the HMDS by forming the hydrogen or -C-O-Si(CH 3 ) 3 covalent bonds [59,60]. Results are also confirmed by the XPS spectra, where the intensity of peak at 286.0 eV corresponding to the C-O group is significantly decreased in the C1s XPS spectra of PFS@GO@HMDS compared with that of PFS@GO (Figs. 2i and S2) [61][62][63]. The possible chemical bonding mechanism among plant fiber, GO, and HMDS is schematically shown in Fig. 1b. ...
... Advanced cooling techniques are essential for keeping electronic components below critical temperatures. Various heat transfer techniques have been proposed to enhance electronics heat dissipation, such as air cooling [1,2], liquid cooling [3,4] immersion cooling [5,6], jet impingement and spray cooling [7,8], and phase transition cooling [9][10][11]. Phase change materials (PCMs) have emerged as a promising solution for thermal management in electronic devices and batteries [12]. ...
... Despite significant progress in nanomaterials, the quest to discover and characterize new 2D systems with novel physical and chemical properties continues [22]. Our group recently proposed the Irida-Graphene (Irida-G), a new carbon-based nanomaterial [23], which has since been the focus of several studies [24][25][26][27][28]. Initially, we described Irida-G as having a flat structure composed of 3, 6, and 8-membered rings, with no buckling and a cohesive energy of -7.0 eV/atom. ...
... When comparing the fuel under study with the typical average values for coal, notable differences arise. It shows considerably higher H/C and O/C ratios and lower levels of nitrogen and sulfur [33]. The low sulfur content reduces the risk of acidic species forming, which could potentially harm the metal components of the gasification facility. ...
... In a coal-fired boiler environment, Cr 3 C 2 -NiCr ceramic coatings resulted in enhancing erosion as well as corrosion resistance [128]. NiTi alloy coating was found to reduce erosive wear in aerospace applications in compressor blades of aircraft [129]. CrN coating over SS304 was found to possess superior corrosion resistance and is hence suitable for marine applications [130]. ...
... Following the standard of "Paint and Varnishes-Cross-cut test" (GB/T 9286-2021/ISO 2409:2020) [41] , the prepared superhydrophobic coating were cut into multiple squares. As shown in Fig. 7a, the cut edges of the samples were completely smooth, and the grids were intact. ...
... 36 This indicates that low heights of heat transfer units are achieved due to the high evaporation rate for the same cooling effect. 37 The height of the heat transfer unit at various air velocities with and without RSGM has been compared in Figure 12. The height of the heat transfer unit decreases with the rising of air velocity because as the velocity of air increases, retention time between air and water decreases; thereby, reducing the rate of heat and mass transfer. ...
... Reduced graphene oxide (rGO) is used as the sensing material, while silicone sealant serves as a flexible substrate in a simple sensor construction approach that Verma et al. [39] demonstrated. Graphite is electrochemically exfoliated to create few-layered rGO. ...
... From this position, the interaction between the technological parameters of the process contributed the significant influence on which the study focused. Concerning the technological parameters in the thermal spraying, in the different publications [23][24][25][26], authors investigated the level of their influence on the properties of the final coatings. Some research focused on the material side, such as the morphology of the powder, the chemical composition, and the transition of microstructure under thermal cycles. ...