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Luiz Landau

Bio: Luiz Landau is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: Finite element method & Lanczos resampling. The author has an hindex of 14, co-authored 134 publications receiving 693 citations.


Papers
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Journal ArticleDOI
TL;DR: This work reports results obtained with the use of a game engine as a tool to create and to navigate in virtual environments, to perform simulations and training of workers in risky areas, for safety purposes.

61 citations

Journal ArticleDOI
01 Apr 2020-Energy
TL;DR: In this paper, the authors present an assessment of the technical potential of the offshore wind resources of the Southeast and South regions along the Brazilian coastline using atmospheric reanalysis databases, including CFSv2, ERA5 and MERRA2.

54 citations

Journal ArticleDOI
01 Aug 2008-Fuel
TL;DR: In this article, the authors used diamondoids and biomarkers to assess the degree of thermal evolution and the extent of secondary cracking of light oils and condensates and in the identification of mixtures of oils from distinct migration pulses.

43 citations

Journal ArticleDOI
25 Sep 2019-Energies
TL;DR: In this paper, an up-to-date review of the potential, technologies, prototypes, installed capacities, and projects related to ocean renewable energy including wave, tidal, and thermal, and salinity gradient sources.
Abstract: This study, firstly, provides an up-to-date global review of the potential, technologies, prototypes, installed capacities, and projects related to ocean renewable energy including wave, tidal, and thermal, and salinity gradient sources. Secondly, as a case study, we present a preliminary assessment of the wave, ocean current, and thermal gradient sources along the Brazilian coastline. The global status of the technological maturity of the projects, their different stages of development, and the current global installed capacity for different sources indicate the most promising technologies considering the trend of global interest. In Brazil, despite the extensive coastline and the fact that almost 82% of the Brazilian electricity matrix is renewable, ocean renewable energy resources are still unexplored. The results, using oceanographic fields produced by numerical models, show the significant potential of ocean thermal and wave energy sources in the northern and southern regions of the Brazilian coast, which could contribute as complementary supply sources in the national electricity matrix.

40 citations

Journal ArticleDOI
TL;DR: In this paper, the mechanical behavior of interface finite elements is discussed and new interface elements for 2D and 3D analyses without kinematic inconsistencies are proposed, and it is shown that the inconsistency pointed by Kaliakin and Li [Comp. Geotech. Fdns. Div. 17 (1995) 225] for the element proposed by Goodman et al. [ASCE J. 99 (1968) 637] also occurs for other interface models.

40 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the concept of isogeometric analysis is proposed and the basis functions generated from NURBS (Non-Uniform Rational B-Splines) are employed to construct an exact geometric model.

5,137 citations

01 Jan 1989
TL;DR: In this article, a two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea.
Abstract: Abstract A two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea. The domain includes a representation of part of Borneo as well as the sea so that the model can simulate the initiation of convection. Also included in the model are parameterizations of mesoscale ice phase and moisture processes and longwave and shortwave radiation with a diurnal cycle. This allows use of the model to test the relative importance of various heating mechanisms to the stratiform cloud deck, which typically occupies several hundred kilometers of the domain. Frank and Cohen's cumulus parameterization scheme is employed to represent vital unresolved vertical transports in the convective area. The major conclusions are: Ice phase processes are important in determining the level of maximum large-scale heating and vertical motion because there is a strong anvil componen...

3,813 citations

Journal ArticleDOI
01 Oct 1980

1,565 citations

Journal ArticleDOI
TL;DR: In this paper, the authors studied the stability properties of Isogeometric Analysis in the context of mesh refinement and developed approximation estimates based on a new Bramble-Hilbert lemma in so-called "bent" Sobolev spaces.
Abstract: We begin the mathematical study of Isogeometric Analysis based on NURBS (non-uniform rational B-splines). Isogeometric Analysis is a generalization of classical Finite Element Analysis (FEA) which possesses improved properties. For example, NURBS are capable of more precise geometric representation of complex objects and, in particular, can exactly represent many commonly engineered shapes, such as cylinders, spheres and tori. Isogeometric Analysis also simplifies mesh refinement because the geometry is fixed at the coarsest level of refinement and is unchanged throughout the refinement process. This eliminates geometrical errors and the necessity of linking the refinement procedure to a CAD representation of the geometry, as in classical FEA. In this work we study approximation and stability properties in the context of h-refinement. We develop approximation estimates based on a new Bramble–Hilbert lemma in so-called "bent" Sobolev spaces appropriate for NURBS approximations and establish inverse estimates similar to those for finite elements. We apply the theoretical results to several cases of interest including elasticity, isotropic incompressible elasticity and Stokes flow, and advection-diffusion, and perform numerical tests which corroborate the mathematical results. We also perform numerical calculations that involve hypotheses outside our theory and these suggest that there are many other interesting mathematical properties of Isogeometric Analysis yet to be proved.

681 citations