Výsledky vyhledávání - "Janardan Rohatgi"

Akademický článek

Modeling of the temperature field generated by the deposition of weld bead on a steel butt joint by FEM techniques and thermographic images.

Autor: Eduardo José Fernandes Rocha, Tiago de Sousa Antonino, Pablo Batista Guimarães, Ricardo Artur Sanguinetti Ferreira, José Maria Andrade Barbosa, Janardan Rohatgi

Publikováno v: Materials Research, Vol 21, Iss 3 (2018)

The aim of this work is to predict the temperature field generated by welding a steel butt joint (API 5L X80). The prediction was modeled by finite element software Abaqus where the subroutine was developed in Fortran so that heat source motion may b

Externí odkaz: https://doaj.org/article/8c53bc5dd77848ce88fd2fffd2c19418

Zobrazit plný text záznamu

Active load control of large wind turbines using state-space methods and disturbance accommodating control

Autor: Alex Maurício Araújo, Janardan Rohatgi, Eduardo José Novaes Menezes, Pedro Manuel González del Foyo

Publikováno v: Energy. 150:310-319

The control of wind turbine loads is fundamental to reduce wind energy cost. Wind turbines are complex dynamic systems subjected to random wind loads and harsh operational vibrations. Active load control reduces wind turbine mechanical vibrations, pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a80001c0a8bb1b8c9a0df25d4f3c1fd
https://doi.org/10.1016/j.energy.2018.02.143

Zobrazit plný text záznamu

Vibration monitoring, fault detection, and bearings replacement of a real wind turbine

Autor: Ricardo M. Campello de Souza, Henrique Dias Machado de Azevedo, Nadège Bouchonneau, Alex Maurício Araújo, Pedro Henrique Cavalcanti de Arruda Filho, Janardan Rohatgi

Publikováno v: Journal of the Brazilian Society of Mechanical Sciences and Engineering. 39:3837-3848

Wind turbines are growing rapidly in size and diameter. Nowadays, most wind turbines being installed are around 100 m in height and 80–120 m in diameter. Another important characteristic of wind farms is that they are usually far from urban centers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd22f3cda18c6b3a6af838e8eb211c29
https://doi.org/10.1007/s40430-017-0853-2

Zobrazit plný text záznamu

The influence of the overall heat transfer coefficients in the dynamic behavior of a single effect absorption chiller using the pair LiBr/H2O

Autor: José Carlos Charamba Dutra, J.R.G. Henríquez, Janardan Rohatgi, C.A.C. dos Santos, A.A.V. Ochoa

Publikováno v: Energy Conversion and Management. 136:270-282

Absorption systems offer an alternative way to substitute energy economically in mechanical compression systems in the field of refrigeration and air conditioning. The aim of this article is to investigate the transient performance of a single effect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcff3b9ebe89287f95865bd423fd299a
https://doi.org/10.1016/j.enconman.2017.01.020

Zobrazit plný text záznamu

Modeling of the temperature field generated by the deposition of weld bead on a steel butt joint by FEM techniques and thermographic images

Autor: Janardan Rohatgi, Ricardo Ferreira, Pablo Batista Guimarães, Eduardo José Fernandes Rocha, Tiago de Sousa Antonino, José Maria Andrade Barbosa

Publikováno v: Materials Research, Vol 21, Iss 3 (2018)
Materials Research, Issue: ahead, Published: 05 MAR 2018
Materials Research, Volume: 21, Issue: 3, Article number: e20160796, Published: 23 FEB 2018
Materials Research v.21 n.3 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fe296b42671a7c9b8b9badf3e06772b
http://www.scielo.br/pdf/mr/v21n3/1516-1439-mr-1980-5373-MR-2016-0796.pdf

Zobrazit plný text záznamu

Analysis of design parameters of large-sized wind turbines by non-dimensional model

Autor: Oyama Douglas Queiroz de Oliveira Filho, Maurílio José dos Santos, Armando Lúcio Ramos de Medeiros, Alex Maurício Araújo, Janardan Rohatgi

Publikováno v: Energy. 93:1146-1154

This paper presents a simplified non-dimensional model to estimate capacity factor for megawatt-sized VSVP (variable speed variable pitch) wind turbines. Instead of cut-in ( V in ), rated ( V r ) and cut-out ( V out ) speeds of a wind turbine a non-d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8fc2c9908a3b095851eb31a079d539e
https://doi.org/10.1016/j.energy.2015.09.118

Zobrazit plný text záznamu

Solar water heating for a hospital laundry: A case study

Autor: Thiago P. Lima, Ana Rosa Primo, José Carlos Charamba Dutra, Janardan Rohatgi, A.A.V. Ochoa

Publikováno v: Solar Energy. 122:737-748

Solar energy has enormous potential in many areas of industrial activity in Brazil, since much of the country has high levels of sustained solar insolation. Unfortunately, there are few industries that use solar energy for water heating even though s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1ca9ef7b5ba7c5ec90cd3d7870d69b7
https://doi.org/10.1016/j.solener.2015.10.006

Zobrazit plný text záznamu

Defining Capacity Factor by Weibull Shape Parameter and Mean Wind Speed

Autor: Alex Maurício Araújo, Janardan Rohatgi, Armando Lúcio Ramos de Medeiros, Oyama Douglas Queiroz de Oliveira Filho

Publikováno v: Wind Engineering. 39:253-260

This workmodels capacity factor in terms of wind turbine operating characteristics, mean wind speed, and shape parameter of Weibull probability density function. The methodology used involves fewer parameters than have been used by other workers. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0962d00436260f58a2c5fe437c3fbfd1
https://doi.org/10.1260/0309-524x.39.3.253

Zobrazit plný text záznamu

Energetic and exergetic study of a 10RT absorption chiller integrated into a microgeneration system

Autor: J.R.G. Henríquez, A.A.V. Ochoa, Janardan Rohatgi, José Carlos Charamba Dutra

Publikováno v: Energy Conversion and Management. 88:545-553

This paper shows a thermodynamic cogeneration model (single-effect LiBr/H2O absorption chiller coupled to a 30 kW microturbine, a cooling tower and a heat exchanger) and analyzes energetic and exergetic behavior of the system. A computational algorit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2d1677b69b35ef324593fc0f7a58720
https://doi.org/10.1016/j.enconman.2014.08.064

Zobrazit plný text záznamu

Development of the wind power in Brazil: Political, social and technical issues

Autor: Alex Maurício Araújo, Alberto Aquino Juárez, Janardan Rohatgi, Oyama Douglas Queiroz de Oliveira Filho

Publikováno v: Renewable and Sustainable Energy Reviews. 39:828-834

This paper aims to present a review of the increasing contribution of wind power to the Brazilian electric matrix and an analysis of the main impact on technical, political and social aspects. This work takes into account the state-of-art of the wind

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5dce104f96e1ae6ad59406fcfd178905
https://doi.org/10.1016/j.rser.2014.07.086

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání