• Computational solvers for iterative hydraulic loss calculations in pipe systems 

  Dwivedi, Ayush; Sawant, Gorakh; Karn, Ashish (SSRN Product & Services, 2022-04)

  The study of fluid mechanics spans several engineering disciplines including Mechanical, Civil, Aerospace, Chemical, Environmental, Petroleum, and Biomedical Engineering. In all these disciplines, hydraulic loss calculations ...
• Investigation of ventilation demand variation in unsteady supercavitation 

  Yoon, Kyungduck; Li, Jiaqi; Shao, Siyao; Karn, Ashish; Hong, Jiarong (Elsevier, 2021-11)

  Understanding the air injection strategy of a ventilated supercavity is important for designing high-speed underwater vehicles wherein an artificial gas pocket is created behind a flow separation device to reduce skin ...
• On the morphology of elongated bubbles during their formation at submerged orifices 

  Gaurav, Kumar; Mittal, Gaurav; Karn, Asish (Elsevier, 2022-03-15)

  Bubbly flow is a widely observed phenomenon in various industrial applications and has remained a topic of sustained interest over decades, owing to the complex multi-physics that govern the multiphase phenomenon. The ...
• Mechanism of vortex bifurcation vis-à-vis axial switching in rectangular synthetic jets 

  Kumar, Abhay; Saha, Arun K.; Panigrahi, Pradipta K.; Karn, Ashish (Elsevier, 2021-04)

  The present study investigates the vortex dynamics of the rectangular shaped synthetic jet and reports the occurrence of vortex ring bifurcation along with other reported modes such as axial switching and the vortex suction. ...
• On the enormous enhancement in water evaporation rates obtained by employing a different polar ambient 

  Karn, Asish; Ambs, Jonathan; Deo, Shashank S.; Vyas, Ayush; Dwivedi, Ayush; Kumar, Abhay (Wiley, 2021-11)

  Enhancing evaporation rates are of great practical interest in many technological applications, such as water desalination or drying in industry. Evaporation mass flux is a function of ambient temperature, relative humidity, ...
• Enhancement of efficiency and thermal comfort in a passenger car cabin using spanwise inlet vents 

  Bhat, Ashutosh; Raghav, Geetanjali; Karn, Asish (Chulalongkorn University, 2021-02)

  Ensuring thermal comfort in car passenger cabins has been a sustained area of interest, both for automobile manufacturers and HVAC engineers alike. Towards this end, the four-channel inlet system appears to be the most ...
• Low speed wind turbines for power generation: a review 

  Venkatramakrishnan, Ragunath; Pandey, Jitendra K.; Mondal, Amit Kumar; Karn, Ashish (Penerbit Akademia Baru, 2020-03)

  Wind turbines are simple and eco-friendly means of generating electricity. This review paper introduces the challenges in harvesting maximum energy at low wind velocities (typically around 3 m/s, the cut-in wind speed for ...
• Implications of velocity ratio on the characteristics of a circular synthetic jet flush mounted on a torpedo model in quiescent and cross-flow conditions 

  Kumar, Abhay; Saha, Arun K.; Panigrahi, Pradipta Kumar; Karn, Ashish (Journal of Applied Fluid Mechanics, 2020-05)

  A high velocity ratio synthetic jet on an arched surface is of great interest for its potential applications in navy, including torpedo. However, in spite of detailed research on synthetic jets over a flat surface in ...
• Effect of a parallel free surface upon a submerged shallow synthetic jet 

  Kumar, Abhay; Karn, Ashish (IPO Publishing, 2020-08)

  The interaction of a submerged shallow synthetic jet with a parallel free surface has gathered substantial interest, owing to its relevance to the operation of marine vehicles viz. ships that move close to the water surface. ...
• Some insights into drop impacts on a hydrophobic surface 

  Karn, Asish; De, Rohan; Kumar, Abhay (Journal of Applied Fluid Mechanics, 2020-03)

  The current study reports the phenomenon of drop impacts on a hydrophobic surface in the substrate deposition regime (non-splashing), focusing on the characterization of each stage upon impact and different non-dimensional ...
• Comfortably vented, indigenously designed (COVID) fabric helmet to curb infection spread in education, healthcare and other community settings 

  Karn, Asish; Deo, Shashank Singh; Singh, Raman Kumar; Kumar, Abhay (The National Institute of Health and Family Welfare, 2020-12)

  Considering the current scenario of Coronavirus outbreak and the post-pandemic situation, the need for protective gears such as face-masks assumes utmost importance for the common populace, as well as in the areas of concern ...
• Efficiency and effectiveness enhancement of an intercooler of two-stage air compressor by low-cost Al2O3/water nanofluids 

  Chintala, Venkateswarlu; S., Vikesh; Karn, Asish (Wiley, 2020-07)

  The present study was aimed to utilize low-cost alumina (Al2O3) nanoparticles for improving the heat transfer behavior in an intercooler of two-stage air compressor. Experimental investigation was carried out with three ...
• On the flow physics and vortex behavior of rectangular orifice synthetic jets 

  Kumar, Abhay; Saha, Arun K.; Panigrahi, Pradipta Kumar; Karn, Ashish (Elsevier, 2019-05)

  Synthetic jet actuators possess a continuous jet like behavior in its far region and have found wide-scale engineering applications since it allows momentum transport to the flow system without any net mass transfer across ...
• Investigation into sky temperature estimation, its variation, and significance in heat transfer calculations of solar cookers 

  Karn, Asish; Chintala, Venkateshwarlu; Kumar, Suresh (Wiley, 2019-04-08)

  The determination of sky temperature assumes great importance in engineering applications such as radiative cooling of buildings. Many studies that involve a radiative exchange with the sky employ different reported models ...
• Qualitative Inter-relation between drop impacts on a solid surface and the interaction of a droplet placed inside a superheated pool 

  Karn, Ashish; De, Rohan; Kumar, Abhay (Penerbit Akademia Baru, 2019-08)

  The phenomenon of drop impacts on a solid surface and the interaction of a cold droplet with a superheated liquid pool are both of great relevance in many practical and engineering situations. Most of the reported research ...
• Utilization of biomass-derived pyro-oils in compression ignition (CI) engines – recent developments 

  Chintala, Venkateswarlu; Sharma, Amit Kumar; Karn, Ashish; Vardhan, Harsh; Pandey, J K (Taylor & Francis, 2019-10-25)

  Recent developments in different aspects of pyrolysis technology such as input energy and waste feedstocks were discussed in the study. Insights into the utilization of pyro-oils in compression ignition (CI) engines were ...
• Qualitative and quantitative characterization of a synthetic jet mounted on a convex torpedo-like surface under cross-flow 

  Kumar, Abhay; Karn, Ashish (Elsevier, 2018-12)

  Understanding the fundamental flow physics of a synthetic jet in cross flow is important for a variety of engineering and scientific applications. In Particular, a synthetic jet mounted on a convex torpedo surface at high ...
• On the synergistic interrelation between supercavity formation through vaporous and ventilated routes 

  Karn, Asish; Chawdhary, Saurabh (Elsevier, 2018-03-17)

  A supercavity can be attained via two distinct routes: vaporous and ventilated supercavitation. A vaporous supercavity is one that is obtained by the coalescence of individual vapor bubbles formed by cavitation. On the ...
• Prospect of biomass to bioenergy in India : an overview 

  Chauhan, Kunal; Singh, Varun Pratap (Elsevier, 2023-02-11)

  Energy is the most essential commodity for a rising nation like India. India’s population has grown beyond 1.4 billion, driving a rapid rise in energy consumption. To meet this demand, India must explore all available ...
• Process parameters optimization of carbon nano tube based catalytic transesterification of algal oil 

  Singh, Anna Raj; Singh, Sudhir Kumar; Singh, Varun Pratap (Elsevier, 2023-02-11)

  The requirement for different types of natural fuel and the peak in the price are big issues for mankind. Researchers are more concerned about using environmentally friendly fuel than limited energy sources now that public ...

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