Congrès International d'Architecture Moderne

About: Congrès International d'Architecture Moderne is a based out in . It is known for research contribution in the topics: Boundary value problem & Jet (fluid). The organization has 393 authors who have published 403 publications receiving 4104 citations.

Approximate Analytical Solutions of KdV and Burgers’ Equations via HAM and nHAM

Abstract: This article presents a comparative study of the accuracy between homotopy analysis method (HAM) and a new technique of homotopy analysis method (nHAM) for the Korteweg-de Vries (KdV) and Burgers' equations. The resulted HAM and nHAM solutions at 8th-order and 6th-order approximations are then compared with that of the exact soliton solutions of KdV and Burgers' equations, respectively. These results are shown to be in excellent agreement with the exact soliton solution. However, the result of HAM solution is ratified to be more accurate than the nHAM solution, which conforms to the existing finding.

Effect of a dielectric barrier discharge on laminar-turbulent transition on a flat plate in a disturbed external flow

Abstract: Numerical simulation is applied to study the distinctive features of the dielectric barrier discharge (DBD) effect on laminar-turbulent transition on a flat plate in the presence of disturbances in the external flow. The density distributions of the electric force and the discharge power acting on the gas are assumed to be uniform within the given discharge volume. To model the external disturbances the value of the turbulent viscosity in the differential model used is assumed to be nonzero at the boundary layer edge.

Infección de festucas finas por hongos endofítos epichloe en la Cordillera Cantábrica

Abstract: Se examino la presencia de hongos endofitos Epichloe en 18 poblaciones naturales de festucas finas (10 de Festuca ovina L. y ocho de Festuca rubra L.) recogidas en la Cordillera Cantabrica. Se detectaron semillas infectadas en la totalidad de las poblaciones de Festuca rubra y en seis de las 10 de Festuca ovina. Las semillas de las poblaciones de Festuca rubra resultaron infectadas con una frecuencia media del 35,9% (d.e. = 20,7) variando de un 2% al 64%. En Festuca ovina, el 60% de las semillas de las poblaciones resultaron infectadas con el hongo endofito con una frecuencia media del 30,7% (d.e. = 25,6) variando el nivel de infeccion del 6% al 64%. La mayoria de las semillas de las poblaciones infectadas mostraron niveles de infeccion bajos a moderados: 10 poblaciones mostraron un porcentaje de infeccion por debajo del 50%, mientras que cuatro de las poblaciones tuvieron un porcentaje de infeccion por encima del 50%. Estos resultados sugieren que la asociacion de hongos endofitos Epichloe con Festuca rubra y Festuca ovina es habitual y ocurre a frecuencias bajas a moderadas (0% a 50%) en los prados de la Cordillera Cantabrica.

Elastic and seismic model for the generation of tsunamis via lattice Boltzmann method

Abstract: An efficient implementation of the Lattice Boltzmann method (LBM) for the numerical simulation of the generation tsunamis, based on Elastic wave equation and P-wave equation is presented. It is provided two examples where the scheme is used to model mechanisms for the generation of seismic waves. Numerical results show good agreement with the theory.

Analysis of the nozzle exit flow parameter effect on the turbulence characteristics and the noise level in jets issuing from nozzles of different types

Abstract: The flow, turbulence, and noise parameters of cold and hot jets flowing out of nozzles of different types at subsonic and supersonic velocities are calculated using the high-resolution RANS/ILES method. The effect of the Mach number and the temperature at the nozzle exit on the flow features, the turbulent fluctuations of the velocity, the static pressure, and the temperature, together with the overall noise level is analyzed for all the jets considered. The accuracy of the calculations is confirmed by means of comparing with the available experimental data concerning certain parameters.