Search Results - "Nayak, Arun"

A comparison of thermal-hydraulic performance of various fin patterns using 3D CFD simulations by Kumar, Ankur, Joshi, Jyeshtharaj B., Nayak, Arun K.

“…•A comparison of thermal-hydraulic performance of various fins.•Prediction of heat transfer coefficient, pressure drop, compactness, fin efficiency.•Detailed…”
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CFD simulation of Departure from Nucleate Boiling in vertical tubes under high pressure and high flow conditions by Vadlamudi, Sai Raja Gopal, Nayak, Arun K.

“…•Bubble departure diameter and nucleation site density models are recalibrated for high pressure conditions.•Theoretical and experimental basis for boiling and…”
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Measurement of scrubbing behaviour of simulated radionuclide in a submerged venturi scrubber by Goel, Paridhi, Moharana, Avinash, Nayak, Arun K.

“…•Submerged Pease-Anthony type venturi scrubber is experimentally investigated.•Axial variation of pressure drop across the venturi scrubber is…”
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Numerical simulation of injection characteristics, hydrodynamics and absorption of iodine vapour in a venturi scrubber operating in self-priming mode by Goel, Paridhi, Moharana, Avinash, Nayak, Arun K.

“…•Pressure profile in submerged venturi scrubber has been predicted.•Injection characteristics of submerged venturi scrubber are discussed.•Iodine retention in…”
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Performance estimation of a venturi scrubber and its application to self-priming operation in decontaminating aerosol particulates by Moharana, Avinash, Goel, Paridhi, Nayak, Arun K.

“…•A computational model to predict the efficiency of venturi scrubber is developed.•Efficiency increased with increase in gas velocity and liquid injection…”
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Experimental and numerical study to optimize a design of passive moderator cooling system of an advanced nuclear reactor by Pal, Eshita, Minocha, Nitin, Nayak, Arun K., Joshi, Jyeshtharaj B.

“…•Simulation of reactor and 1/10th scaled model of Passive Moderator Cooling system.•1D numerical simulation using RELAP5/MOD3.2 of coupled natural circulation…”
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Experimental and CFD simulations of fluid flow and temperature distribution in a natural circulation driven Passive Moderator Cooling System of an advanced nuclear reactor by Pal, Eshita, Kumar, Mukesh, Nayak, Arun K., Joshi, Jyeshtharaj B.

“…The Passive Moderator Cooling System (PMCS) of the Advanced Heavy Water Reactor is designed to remove heat from the moderator passively in case of an extended…”
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Environmental Movements in India by Nayak, Arun Kumar

“…The study of environmental movements has become one of the important discourses in academics and it has a number of aspects. This article investigates the…”
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Experimental study of bubble departure characteristics in forced convective subcooled nucleate boiling by Goel, Parul, Nayak, Arun K., Ghosh, Pradyumna, Joshi, Jyeshtharaj B.

“…Visualization experiments in upward forced convective nucleate boiling flows were carried out. The bubble growth and collapse have been measured using…”
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3D CFD simulation of air cooled condenser-I: Natural convection over a circular cylinder by Kumar, Ankur, Joshi, Jyeshtharaj B., Nayak, Arun K., Vijayan, Pallippattu K.

“…The objective of this work is to investigate the transient 3D numerical simulations of natural convection of air around a circular cylinder (76.2mm OD)…”
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Numerical Simulation of Departure from Nucleate Boiling in Rod Bundles under High-Pressure Conditions by Vadlamudi, Sai Raja Gopal, Nayak, Arun K.

“…In subcooled boiling flows beyond a certain heat flux, heat transfer is hampered due to a phenomenon known as Departure from Nucleate Boiling (DNB). Conducting…”
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Incidence & factors influencing maternal near miss events in tertiary hospitals of Maharashtra, India by Kulkarni, Ragini, Chauhan, Sanjay, Fidvi, Juzar, Nayak, Arun, Humane, Anil, Mayekar, Rahul, Begum, Shahina, Patil, Anushree, Mayadeo, Niranjan

“…Background & objectives: Government of India (GoI) released operational guidelines for maternal near miss-review (MNM-R) in 2014 for use by programme managers…”
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Experimental study of transient heat transfer characteristics of single-phase natural convection in multidimensional porous bed with volumetric heat generation by Mukhija, Sakshi, Nayak, Arun K.

“…Natural convection in an internally heated porous bed of height and diameter of 450 mm and 500 mm, respectively, and superposed with the fluid layer has been…”
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Numerical investigation of three-dimensional natural circulation phenomenon in passive safety systems for decay heat removal in large pools by Minocha, Nitin, Joshi, Jyeshtharaj B., Nayak, Arun K., Vijayan, Pallippattu K.

“…Many advanced designs of nuclear reactors adopt a methodology of passive safety systems in order to avoid the occurence of a severe accident. In one of such…”
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Thermal hydraulics of natural circulation loop in beam-down solar power tower by Thalange, Vinayak C., Pal, Eshita, Minocha, Nitin, Nayak, Arun K., Mahajani, Sanjay M., Panse, Sudhir V., Joshi, Jyeshtharaj B.

“…There have been continuous efforts by researchers and power producing companies to reduce various costs involved in solar power tower (SPT) plants…”
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An experimental study of CHF and power transients in flow boiling at low-pressure low-flow conditions by Vadlamudi, Sai Raja Gopal, Nayak, Arun K., Ghosh, Pradyumna

“…Flow boiling experiments were conducted in an annular channel at very low flow rates and atmospheric pressure varying the inlet subcooling from 20 to 40 …”
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Reduction in thermal stratification in two phase natural convection in rectangular tanks: CFD simulations and PIV measurements by Gandhi, Mayurkumar S., Joshi, Jyeshtharaj B., Nayak, Arun K., Vijayan, Pallippattu K.

“…Heat transfer by natural convection in a cavity is encountered in various industrial applications, such as heating and cooling of living spaces, fire in…”
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Experimental investigation on melt coolability under bottom flooding with and without decay heat simulation by Singh, Nitendra, Kulkarni, Parimal P., Nayak, Arun K.

“…•The effect of decay heat on melt coolability under bottom flooding was studied.•Decay heat of 0.5MW/m3 was simulated.•A single simulant material with same…”
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A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection by KUMAR, ANKUR, JOSHI, JYESHTHARAJ B, NAYAK, ARUN K, VIJAYAN, PALLIPPATTU K

“…In this paper, a review is presented on the experimental investigations and the numerical simulations performed to analyze the thermal-hydraulic performance of…”
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CFD simulations of moderator flow inside Calandria of the Passive Moderator Cooling System of an advanced reactor by Pal, Eshita, Kumar, Mukesh, Joshi, Jyeshtharaj B., Nayak, Arun K., Vijayan, Pallippattu K.

“…•CFD simulations in the Calandria of an advanced reactor under natural circulation.•Under natural convection, majority of the flow recirculates within the…”
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