Search Results - "Prasad, B.V.S.S.S."

Effect of wall surface roughness on condensation shock by Pillai, Aditya, Prasad, B.V.S.S.S.

“…The effect of sand grain type surface roughness on an unseparated incipient condensation shock and its influence on the boundary layer has been studied…”
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Temperature effects on hydrodynamics of dense gas-solid flows: Application to bubbling fluidized bed reactors by Sahu, Akhilesh Kumar, Raghavan, Vasudevan, Prasad, B.V.S.S.S.

“…In this article, the effects of operating temperature on the hydrodynamics of dense gas-solid flow inside the fluidized bed reactor are investigated…”
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Numerical simulation of gas-solid flows in fluidized bed gasification reactor by Sahu, Akhilesh Kumar, Raghavan, Vasudevan, Prasad, B.V.S.S.S.

“…[Display omitted] •Gas-solid flow in a bubbling bed reactor is simulated.•Numerical model includes required hydrodynamics and kinetics schemes.•Several choices…”
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Numerical prediction of dryout in a 19 rod bundle under the effect of eccentricity and blockage by Pothukuchi, Harish, Patnaik, B.S.V., Prasad, B.V.S.S.S.

“…•Sub-channel analysis of a 19 rod bundle is performed to predict the dryout, using the film thickness model.•The effect of eccentricity, axial power…”
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Acoustic enhancement of heat transfer in furnace tubes by Dhanalakshmi, N.P., Nagarajan, R., Sivagaminathan, N., Prasad, B.V.S.S.S.

“…► Heat transfer enhancement under flow conditions in particular with three different frequencies was studied for the first time. ► In order to have…”
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Post shut-down decay heat removal from nuclear reactor core by natural convection loops in sodium pool by Rajamani, A., Sundararajan, T., Prasad, B.V.S.S.S., Parthasarathy, U., Velusamy, K.

“…•Transient simulations are performed for a worst case scenario of station black-out.•Inter-wrapper flow between various sub-assemblies reduces peak core…”
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Numerical simulation of flow through an eccentric annulus with heat transfer by K. Chauhan, Amit, Prasad, B.V.S.S.S, Patnaik, B.S.V

“…Purpose – The purpose of this paper is to investigate the effect of narrow gap on the fluid flow and heat transfer through an eccentric annular region is…”
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Large-eddy simulation of non-isothermal flow over a circular cylinder by Jogee, Sourabh, Prasad, B.V.S.S.S., Anupindi, Kameswararao

“…•Temperature difference has a nonlinear effect on the flow and heat transfer.•The transeverse Reynolds stresses are observed to be high.•Thermal…”
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Influence of novel equilaterally staggered jet impingement over a concave surface at fixed pumping power by Singh, Alankrita, Prasad, B.V.S.S.S.

“…•Proposed a novel cooling configuration for leading edge of turbine vane.•Compared heat transfer performance of two cooling configurations at fixed pumping…”
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Behavior of slip ratio during subcooled flow boiling in a vertical tube: A CFD approach by Prattipati, R., Prasad, B.V.S.S.S.

“…Slip ratio can be readily measured in an adiabatic two-phase flow experiment. However, in the flow boiling experiments, as the phase velocities keep varying,…”
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CFD investigation and assessment of wall heat flux partitioning model for the prediction of high pressure subcooled flow boiling by Murallidharan, Janani Srree, Prasad, B.V.S.S.S., Patnaik, B.S.V., Hewitt, G.F., Badalassi, V.

“…The ‘wall heat flux partitioning’ (WHFP) model in conjunction with an Eulerian–Eulerian Multiphase Flow (EEMF) method is found to be an apt tool, to simulate…”
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CFD modeling of critical heat flux in flow boiling: Validation and assessment of closure models by Pothukuchi, Harish, Kelm, S., Patnaik, B.S.V., Prasad, B.V.S.S.S., Allelein, H.-J.

“…•Computational Fluid Dynamics (CFD) based prediction of CHF is performed.•Different closure models are assessed by comparison with the experimental CHF…”
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Void fraction in helical coils during flow boiling with inlet subcooling by Prattipati, R., Pendyala, S., Prasad, B.V.S.S.S.

“…Void fraction distributions in helical coils of various diameters are computationally estimated with inlet mass flux, degree of subcooling and wall superheat…”
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Rotordynamic characteristics of rotating labyrinth gas turbine seal with centrifugal growth by Subramanian, Sivakumar, Sekhar, A.S., Prasad, B.V.S.S.S.

“…The rotordynamic characteristics of gas turbine seals have been investigated in numerous previous studies. However, the effects of centrifugal growth were…”
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A computational study of mist assisted film cooling by Mallikarjuna Rao, P., Biswal, Pratibha, Prasad, B.V.S.S.S.

“…In the mist assisted film cooling, water droplets are injected along with the coolant air. The concentration difference between the water droplets and the…”
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Co-gasification of Indian rice husk and Indian coal with high-ash in bubbling fluidized bed gasification reactor by Bharath, M., Raghavan, Vasudevan, Prasad, B.V.S.S.S., Chakravarthy, S.R.

“…•Bubbling bed co-gasification of Indian coal and rice husk studied.•Addition of rice husk improves all gasification performance metrics.•Effects of blend…”
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Rotordynamic characterization of rotating labyrinth gas turbine seals with radial growth: Combined centrifugal and thermal effects by Subramanian, Sivakumar, Sekhar, A.S., Prasad, B.V.S.S.S.

“…In this article, a generic framework, which takes into account of both the centrifugal and thermal effects, is introduced towards rotordynamic characterization…”
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Gasification of high-ash Indian coal in bubbling fluidized bed using air and steam – An experimental study by Vijay Kumar, K., Bharath, M., Raghavan, Vasudevan, Prasad, B.V.S.S.S., Chakravarthy, S.R., Sundararajan, T.

“…•Bubbling bed gasification of high-ash Indian coals is systematically studied.•Design, fabrication and installations details are reported.•Effects of air to…”
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A universal wall-bubble growth model for water in component-scale high-pressure boiling systems by Murallidharan, Janani Srree, Prasad, B.V.S.S.S., Patnaik, B.S.V.

“…•A generalized wall-bubble growth model for water is proposed.•Wall bubble growth formulation encompasses wide experimental data.•Model is applicable for…”
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A mechanistic model for embryo size prediction at boiling incipience: ‘Work of formation’ based approach by Murallidharan, Janani Srree, Prasad, B.V.S.S.S., Patnaik, B.S.V.

“…•A mechanistic model is proposed for the embryo size prediction.•This model for boiling incipience is based on the “work of formation” approach.•The model…”
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